This is such a great mod + it's super cheap #thrifty :) The Green Gizmo™ build video is now live ruclips.net/video/zWRD5PawPw0/видео.html plus the schematic and pedal are here mcphersonmusic.site/product-category/pickups/the-green-gizmo%ef%b8%8f/
Starting with a great pickup and fine tuning to what you like in your guitar. I've been saying that for years. Make what you already have sound better is a good option if you are on a budget. BTW Great video with lots of great information.
@@Earthwormjimm I just received my built one. Great useful pedal. Unsolicited tip - move the switch further away from the knob, its fiddly where it is. Also use a big switch .
@@robertzombiekill6365 How are you over 60 yo and exist with this little tact. I'm sorry that you've grown into a curmudgeon in your later years. There's no reason to bring negativity in reply to op.
Also literally every guitar player who records, but doesn't have a lot of equipment. Instant way to sound like you have several different guitars that inhabit different parts of the mix.
Brilliant and thanks for showing us where to solder...just a little less reverb so we can hear the dry tone. This is much better than sticking those plates on the pick-up base which to my ragged ears does tame the brightness but also loses the midrange..resulting in a wider but thinly spaced tone. Thumbs up to this channel just for the " Have a go" spirit which is lacking in this "Specialist" field of Audio engineering. NB , if you haveca recyling centre nearby ask if you can salvage some caps etc from old radios or Big TVs , The 70s and 80s TVs are loaded with excellent quality parts for this sort of Guitar tone mod. Don't use old bits for amplifiers though, too dangerous.
In my guitars I actually always swap out one of the knobs for a 6-way switch with different cap values used with the tone knob. I did this to shift the peak frequency. It's also a great mod for making a guitar over-the-top dark for thicc doom sounds.
Great idea!! I was imagining either an extra switch on the guitar just for the capacitors, or Waylon's "gizmo" having a home on the pedalboard. I know next to nothing about guitar electronics...do you see any advantage of replacing the regular tone knob like you do, vs keeping it in, and maintaining the ability to simply roll off high frequencies when you want (plus the resonant peak control)?
@@j3ffn4v4rr0 you can buy this mod as a replacement for a tone pot in a rotary switch. 10 position, and there is a 16 position one. when on the guitar, you can not just turn it on and off, but switch it on the fly. more useful than the tone knob on the neck pickup.
Old timer here haha, and im not the only one but I've been modding caps and pickups since the early 70's but what I'm realy impressed with is your new pedal! I truly hope you have amazing success with it if you decide to design and develop it more and market it.
I have that guitar. I love the crazy bright sound. To lower the peak , I wired the bridge pick up through the tone control. Fender does not wire it through. Makes a huge difference. Also added a treble bleed. Cheers from Sacramento
This is probably the most helpful and approachable "mod" video I've ever seen on YT. A handful of ceramic capacitors (still cheap nowadays) can make a huge difference in letting anyone create their "personal tone." (I bought a decade box specifically for messing around with tone. 👍) I know a pro blues guy, who always gets the hottest singles he can find. Some of his fans think this is for volume, to overdrive the preamp and get his distinctive growl (he despises stompboxes other than a very occasional wah). It's actually to crowd the mids and get away from the "icepick" tone of singles. On the other hand, whenever someone says their humbuckers sound "muddy" or "muffled," I tell them to back 'em down a few turns, to un-crowd the mids. And if they get new PUs, to go cooler NOT hotter.
@@WaylonMcPhersonGuitar This may be the dumbest question youve ever heard but please bare with me...Is there any cap or "device" or anything you can wire in series like these caps tame the harsh end, that does the oposite? something that makes a muddy pickup brighter without touching the tone knob? sorry if thats stupid, im new to the electronics part of a guitar. Thanks!
Thank you for such a powerful idea. Bought a bunch of 560nF silver caps, since the bridge value was addressing a different issue also. Already tried it on a set of AlNiCo-5 Strat pickups. It let just the right amount of air out their tires. On a spare P-Bass that had questionable pickups, I added one in parallel and a 0.5H ferrite core inductor (in my parts bin for 25 years) in series. It's much more sober and focused now. I didn't know how I was going to get it to sound right but now suddenly it does. Such a cool trick.
I bought your schematics and have built 3 of these so far. I'm retired from owning a guitar shop in Texas for 3 decades and still do work for my customers. I view these as tools to leave with players and let them run it with their gear to easily decide which caps to install. Of course I benefit by getting more work. The response has been great! I really enjoy watching your videos and have learned a few things as well. Including some of your very cool riffs! Thanks so much. Keep them coming!
Is this the Bill Lawrence mod? I just bought some Lawrence/Wilde microcoils tele pickups and there is an article on the website about 'tuning' the pickups using capacitors, which I guess is what you are doing here. Thanks for explaining this its a big help!
Utterly magnificent video! So clear and concise. I echo the thought that all Luthier mod shops should have your gizmo for customers to try sounds before committing to a mod. More videos please👍👍👍
So is it kind of the opposite of compression? Or a sweet spot box lol can u invent some tuners that don't go out of tune too quick for my SG? I'd be most impressed with that! I'd get locking tuners but every bit of it is original even the pearl Gibson tuning pegs. I'll put pics of it on my page it's red heritage cherry 🍒 red but u can see the mahogany grain through it, best axe I've ever bought by a way. I just put new Elixir strings on it so maybe that's got something to do with it, wierd tho cos when I tune it it's sharp not flat ffs n its kept in its flight case when I'm not using it as there's no scratches or dings etc
The difference is dramatic, it actually sounds really good after the mod… And the little green box would actually be a killer tool to have if you’re playing multiple Strats and/or Teles in a live set up situation with different pickups on them! Great video!
I just bought a used Squier Bullet Strat from a pawn shop on evilbay a month ago. I replaced the pickups, the pickguard, and the machine heads. All the stuff that I didn't want any way. The pickguard and pickups, controls, and wire I replaced completely with better components. At least the wire and the capacitor are USA made. Everything else was made in China but it works for me and I love it! I like hotrodding my own guitars when it's something cheap like this and doesn't cost me any money really. And it doesn't matter because I'm not destroying or modifying any of my expensive guitars irreversibly.
I am building a superstrat with that revoicer pedal incorporated in the pickguard utilizing a 6 position rotary switch instead of one of the tones. Basically the wiring goes from the switch output to the rotary switch with 5 condensers (one position will be bypass) then to the tone pot which will act over the selected condenser. Doing the math it will end up having 5*5+5= 30 different tones before the pot modulation. Preatty neat having that revoicer pedal incorporated!
This is the most fascinating thing I've seen in a while on guitar YT, such a simple and clear mod. And, yeah - I think now guitar player just want that pedal of yours.
I have been doing this since the mid '80s. Just chanced upon it and pretty much have done this with all my guitars. So pleased to see you have a superb device like you displayed. Super cool indeed.
For a typical 2.3~2.8H Strat pickup, I prefer a slightly higher freq peak. ~2.2kHz has good clarity without sounding harsh. The cap value for that would be in the 1n5F to 2nF range (along with a typical 200-400pF guitar cable and ~140pF pickup capacitance). I use values like that on the tone knob. The useful versatility throughout the sweep is great.
Thanks!!n I found a 3.3nf capacitor at home and put it on my guitar, the bridge humbucker was ultra sharp, with this mod it sounds lovely. You are a Hero!
a cap in parallel across a pickup is just a tone cap with no pot. very small caps will bleed off the top end of the treble and pass everything else through. I suspect you're not actually shifting the Q-zero of the pickup - just nerfing its treble output a bit. The net result might be the same as a lower output pickup with a lower Q-zero though. Using a cap substitution box is a handy way to determine the cap you want. I made one of those in electronics shop back in high school. I take it your pedal is essentially a cap sub box thrown across a guitar cable.
That external varitone box is a really cool idea, although it will sound slightly different on the output of the guitar when compared to putting them directly in parallel with the pickup. When the caps are directly in parallel they form a resonant LC tank with the pickup's inductance. This resonance will be ever so slightly damped by the cap being after the volume and tone controls. Still, it's a good way to get an idea of the response.
This is only a difference if the volume control is rolled down. If it's all the way up, the cap in the box is also directly in parallel with the pickup along with the tone control (which is also a cap in parallel with the pickup, but with a pot in between) and the volume pot's total resistance value. The main difference between putting it inside the guitar vs out is that the cables also have parallel capacitance and would contribute to the resonant frequency of the peak. So, you would really also want to make sure you either measure the capacitance of the cable or use the same type and length of cable if you wanted to be able to exactly repeat it. This is kind of a variable capacitance cable, in effect. The Source Audio Zio pedal, incidentally, has a tone switch that does this with 3 cap values to choose from and then the rest of the pedal curcuitry comes after so you can dial in a consistent buffered or boosted output
The BB King model Gibsons have a similar sort of rotary knob for various caps too. I'm surprised it never caught on more it such an easy way to change the sound of any guitar. Cheers.
Well at least two other people know what I do. Lol. It’s like reinventing the wheel. Les Paul (the person ) designed the Varitone for BB King in the early 70’s. If I remember correctly it’s 5 positions ,and a bypass. But I could be wrong on that one. I almost bought and put one in my LTD/ESP. But did something more custom instead. 🤙
I would love to put the caps on push pull pots to be able to turn them on and off for even more tone options. I used to do all kinds of mods but I hadn't thought of simply putting the cap in parallel, Ill be playing with this one for sure. Thanks so much
As a electronic nerd who happens to play guitar, that was glorious. I love my strats but I agree with the bridge pickups being shrill for my taste. My go to has been either and HSS setup or having a mini switch to run bridge/neck together (i.e. the Gilmour switch) but I'll have to play with the caps some time to see what works best for me.
In your example, when you go to the bridge/middle position, I think you're getting both capacitors affecting both pickups. I believe you're running both capacitors in parallel at that point so the value would be 2.7 nf plus 560 pF = 3.26 for both pickups combined. Correct?
I bought a Vox wah pedal opened it up and changed the starting/end point of the potentiometer to be a bit less bright with toe down. Sometimes I'll just have it on and leave it at a specific angle for a different tone, I think we're doing similar things but I like your way better.
Got an EVH Wolfgang Standard and replaced the Bridge Pickup with an USA made one that was way brighter. At least that's what I thought...With a .047 Orange Drop I made a Lowcut for the Neck PU and now they work beautirully together. So the other one had a muddier voicing? I'm sure I could have used a 1€ cap too, but I only had the orange drop.
Sounds great, what value cap would you recommend to tweak the bridge on a usa standard strat from '96? Im ok at soldering but crap at electronics values!!
I wonder whether this is the same effect that players used to get in a more primitive way back in the day by using long or curly cables? The effect on the bridge pickup was particularly striking.
Genius mod + pedal, just got a package of capacitors and now I know what I’ll be trying to do with them 😁 that alligator clip method you were mentioning, is that as straightforward as attach cap to clip, attach clip to pot/selector? It’s all a little rocket science to me still but appreciate hearing you explain it all, thanks again!!
Despite of Your Dog Shiz crayon drawing medium… 😆…this Video shows one and the best description, Visual and explanation of the sound of the hertz of pick ups. I’m a simple man, and a Bass Playing man. So Yeah… And! I STILL can hear the difference and the concept…. Much Respect from Canada… 😊 Thank you much, don’t change.,and more pls… 🇨🇦❤
Several position switch. Capacitors. Two 1/4” jacks. Box. Bypass switch. Wire the same as done with the pickup switch. Each position on the switch connected to a different capacitor value. Arrange them in ascending or descending order by value. One side of your bypass switch passes the signal straight through, the other passes through the big capacitor switch. Done.
pickup height is important. first thing i do on a new guitar that the pickups dont seem right, adjust the height up or down and test test test. The other useful too is a decent eq pedal. guitarist have dozens of fx pedals, but no eq.
Your electric wizardry has turned on a tinker goblin in my brain and I'm gonna watch your green gizmo build vid next..; do you think when you demo your mods in the future, could you please play the same riff on each pickup? It really helps me understand the changes to the tone through my bad pc speakers.
Just to add to this fantastic idea. For those who wouldn't want the fixed capacitance for each pickup and be able to play standard and also add more combinations you can add a four way switch to the pickguard and wire it thus: All caps would be wired to ground on one side as explained in the video. Position 1 on the 4 way switch is off to play standard. For the bridge with capacitor on, you solder the other side of the capacitor to position 2 input of the new 4 way switch and then the output of position 2 to the area indicated in the video where the bridge meets the strats 5 way switch. Do the same to the middle and neck pickups. The added advantage of this: You can play any pickup in standard guise by switching the 4 way switch off, you can select any pickup on the strats 5 way switch then select its appropriate capacitor on the new 4 way switch but there is now a new option. You can select the bridge and middle on the strat 5 way switch but have the choice of bridge or middle on the four way switch and the same with all other combinations. This 4 way switch configuration is different from the original wiring though for this reason: When you select bridge and middle on the strat with the wiring shown in the video, the two capacitors have a combined value. If you use a 4 way switch and use bridge and middle, one capacitor is switched off and doesn't affect the value of the other. However, what it will do is have a combined capacitance across both pickups and produce a unique sound for that pickup combination.
I might be wrong, but xotic pedals have the 'Sweet', and 'Super sweet'. It seems like your creation has a click setting. The Xotic pedal is a smooth sweep type knob adjustment.
I wasn't going to subscribe UNTIL I saw you are from New Zealand. Gotta support my friends over there... except when the cricket and rugby are on. ✌️🇦🇺
I've never had a use for a 0.022µF tone cap. I almost always replace them with either a 0.01µF or 0.005µF depending on the pickup. This way I have the option of in or out. On occasion I've installed pickups that sounded great save for being a bit brittle and harsh so I put a 1000pF capacitor between signal hot and ground. Tames the harsh without changing the character of the pickup drastically. The difference the 0.01µF or 0.005µF makes is even more noticeable as you add gain and more so on the bridge pickup.
Super cool! You can also do this by just changing cable length! Longer cables have more capacitance to ground and thus give you a lower frequency resonant peak.
@@terryenglish7132 Ritchie Blackmore, David Gilmour and Carlos Santana, among many others, as well. PRS's Sweet switch in the pre-factory PRS Custom 24s was basically this mod, specifically requested by Carlos Santana when he switched to a wireless system and didn't like the extra brightness, but with a delay line component instead of a capacitor.
This just might be what I need for my recently acquired 20 year old Squier Strat SE. The neck & middle pickups are OK, but I'm not loving the bridge pickup. Thanks for posting this!
That was great. I was actually surprised at how nice it played before the tweaks. I didnt mind listening to that. The bridge was unpleasent was the first thing i noticed but you know, it was okay. But after the tweaks 😱 That made a massive difference, especially to the bridge. Much more enjoyable, the crunch was not as sharp anymore and it had gotten fuller and fatter. Really impressive stuff.
That's very effective! So if I understand my circuits correctly, then adding capacitors in series would increase the resonant frequency. And similarly, adding resistors in series would broaden the peak (reduce Q factor), while in parallel would sharpen it? It's weird I never thought to do this even though I've understood basic circuits for a long time.
It's a great idea, looks a bit like the Vari-Tone which Gibson used to fit in some models of 335 and little like the "Bill Lawrence/Jerry Donahue" mode for Telecasters. I'll certainly be trying it out. Thanks !!
Been doing this and the Volume pot Frequency range bypass mods on guitars since the 90'S great to see others using some RLC bridge ideas to improve their axes. I use an ancient Capacitor decade box its a little ripper
I see others thought same: make a pedal based on your test box so one could have a couple choices; call it The Voice Box. Throw 3 switchable, in series compression circuits for fun. Hey, great simple mod, inspiring for sure.😂
Fantastic! is your pedal or box just a variable tone rotary switch with different caps and a bypass on/off switch? As a new builder/luthier in training I would love to make one of these boxes! do you have a schematic or is it basically I/O rotary with caps and bypass? Also I would love to know the cast of caps in the show.
Hi Waylon, Mike here, from Mule Kick Cigar Box guitars. While I order pretty hot pickups for my cigar box guitar builds that sound super great, I've always wondered about putting different capacitors in them to improve their sound, but capacitors really are a mystery to me. Probably should leave well enough alone but I'd like to learn more about the roll caps play in the whole thing.
Have you noticed that turning down the volume pot just a teeny bit loads the pickup to give it a better sound ? I'm assuming the pickup "wants" to see its DC resistance, before going to hot. The treble stays about the same, but as you turn it softly down you can really hear the bass bloom. After that of course the treble rolls off. I play w lots of distortion which really brings the effect out. But it's there clean too.
Dang, dude, that’s a very cool mod! Great improvement! Subscribed! Btw, I really like using positions 2 and 4 as well, and the mod made them even more pleasing! 👍
Really interesting thank you for this! I'll have a stab at making the capacitor selector box for this project, what would you say is capacitance range and steps it should cover? :)
I looked at a lot of tone stacks schematics in many fender amps and I wired a extra large pedal box up the way I seen them and I can get the same sounds with out doing this to the guitar. I just got tired of pulling my guitars apart to adjust them when I could just twerk the pedal box to do it and it was easier . Nice video 🎸😎
I suspect you need to put an inductor in parallel with the pickup to make it brighter. As an inductor is a coil, think about the middle position on a Les Paul. Two coils (pickups) in parallel.
Most Strat pickups are the same construction neck to bridge, no "voiding changes" of the pickups themselves. The tone change is due to operating under different string vibration widths. Recent Squier pickups are 'underwound and higher magnet' following advancements Leo Fender did at G&L guitars where he used that technique to increase the signal to noise ratio of pickups. If a pickup is too brash then lower it closer to or flush with the pickguard, tip the bass side up, or get a 'reverse hendrix' pickgurard slot to put the bridge pickup with the opposite slant. Unless specifically wired at the factory or modded later, stock Strats have no tone pot on the bridge pickup - it's just pickup>volume>jack. Some do a switch jumper mod so the second tone pot controls both the middle and bridge pickups.
I have an EHX LPB-1 circuit wired into one of my Strats. It's wired to the bottom tone control and the second tone control is global tone. For me it adds a variable boost while trimming a bit of the top end off so it's not so bitey.
Really enjoyed watching and hearing you play! The presentation was well produced, presented and highly engaging. Well done! I hope this channel gets the exposure it deserves.
If push/pull pots exist with a triple pole switch it would be cool to switch the caps in and out. If not, each of the 3 existing pots could be swapped out for push/pull switched controls. Just a thought
Hey Waylon, great mod. I use a one pickup humbucker guitar with 8 k and only a tone pot. How is the wiring here? Between the hot wire and Pot solder contact? 22nF or 33 nF or 47nF? Thank you for an info and greetings from Düsseldorf 💥😎🎸🎼
I actually like the underwound PUPS. The magic of 4-5 Kohm pups is the Old Sixties Rickenbacher tones. Too many guitar players play the Bridge pup becuse they cant Hear themselves in a mix, live or recording. The total failure of on instrument ( guitar) that is entirely voiced. Above Muddle "C". Recovering as much treble as possible from an electric guitar, allows a much wider tonal response with a single tone knob. PS this was Jeff Becks SECRET... An Amp and guitar set to MAX TWANG TREBLE...... before the tone or cap and resistance knob ... At ANY position including the wasted and oten unused Neck PUP. You burn fat or twanging with just rolling your tone knob around. Basically a wah pedal in a knob Jeffs Big Fat secret along with his Vibrato and finger picking attack.
The G&L tone control with low pass and high pass filters moves that resonate peak around as well. The "grease bucket mod" and the Fender TBX control both move the peak around. To maximize the usefulness, put a switch that removes the tone control from the circuit or back in. Some Tele players put 1M Ohm potentiometer for a volume control to get "more twang" . Just the difference between Vintage wiring and Modern wiring in a Gibson guitar makes a difference in the resonate peak and the tone control response. Totally touchy stuff, totally cool to mess with it.
Just a really good idea. The change in the bridge pick-up was profound and obviously useful. I will be doing this as soon as I can get hold of some caps. Thanks a lot.
Isn't this the same or similar effect as different cable length? Or rather like how longer lengths of cable or curly cables seem to shift the peak down? Cool little gadget! Cool video and very interesting, thanks for sharing.
Wow, that was quite a transformation in tone. Well worth a sub. I'm looking forward to checking out your other tips. Like a few of the other commenters, I'd also be interested in learning how to make the little test-bed pedal you demonstrated. Great stuff.
Years ago I built something similar to help diagnose problems in fuel injection systems. I would definitely like to learn to build one ... VERY useful.
Sounds great. I tend to just go for whatever the the thickest cap I can find is(currently a pack of .05 orange drop's), and try to dial in the tone I'm going for. It usually works out, but I get that thick dark jazz tone that never gets used when the knob is maxed out. It's cool to have as an option though. Especially if I want to make the walls rattle some.
I fiddle with my EQ pedal before deciding to change pickups, it sometimes gives me a desirable tone and sometimes it doesn't. The capacitance trick is another arrow in my quiver!
This is great! Is there such a thing as a variable capacitor? Like a pot that has a continuous change in capacitance - as a different kind of tone control? Thanks very much!
This is such a great mod + it's super cheap #thrifty :)
The Green Gizmo™ build video is now live ruclips.net/video/zWRD5PawPw0/видео.html plus the schematic and pedal are here mcphersonmusic.site/product-category/pickups/the-green-gizmo%ef%b8%8f/
Starting with a great pickup and fine tuning to what you like in your guitar. I've been saying that for years. Make what you already have sound better is a good option if you are on a budget. BTW Great video with lots of great information.
Do you have any plans to make and sell a version of that pedal? I would certainly be a buyer.
@@rickpilcher6576 yes - ruclips.net/video/zWRD5PawPw0/видео.html
I’m new to pedal building but I’ve decided I want this to be the first pedal I build
@@Earthwormjimm I just received my built one. Great useful pedal. Unsolicited tip - move the switch further away from the knob, its fiddly where it is. Also use a big switch .
With 58 years of playing experience, I rarely seen something on RUclips that's new to me, but you changed that with your clever.and useful info.
Wow you've been playing 58 years & didn't know this? Been playing 50 years and have known this forever.
42 years experience me
@@robertzombiekill6365 How are you over 60 yo and exist with this little tact. I'm sorry that you've grown into a curmudgeon in your later years. There's no reason to bring negativity in reply to op.
@@robertzombiekill6365you were born 2 years ago AI baby.
I see this "Gizmo" being a useful pedal for luthier shops to have, letting customers dial in the sound they want before you install the mod for them
Also literally every guitar player who records, but doesn't have a lot of equipment. Instant way to sound like you have several different guitars that inhabit different parts of the mix.
@@KarstenJohansson I completely agree with that too
@@KarstenJohansson ruclips.net/video/zWRD5PawPw0/видео.html
im making the pedal to put in my pedal board
@@WaylonMcPhersonGuitar Thanks! This'll be a fun project for the weekend. I think I might end up using it as a more permanent fixture, too.
Brilliant and thanks for showing us where to solder...just a little less reverb so we can hear the dry tone. This is much better than sticking those plates on the pick-up base which to my ragged ears does tame the brightness but also loses the midrange..resulting in a wider but thinly spaced tone. Thumbs up to this channel just for the " Have a go" spirit which is lacking in this "Specialist" field of Audio engineering. NB , if you haveca recyling centre nearby ask if you can salvage some caps etc from old radios or Big TVs , The 70s and 80s TVs are loaded with excellent quality parts for this sort of Guitar tone mod. Don't use old bits for amplifiers though, too dangerous.
In my guitars I actually always swap out one of the knobs for a 6-way switch with different cap values used with the tone knob. I did this to shift the peak frequency. It's also a great mod for making a guitar over-the-top dark for thicc doom sounds.
Great idea!! I was imagining either an extra switch on the guitar just for the capacitors, or Waylon's "gizmo" having a home on the pedalboard. I know next to nothing about guitar electronics...do you see any advantage of replacing the regular tone knob like you do, vs keeping it in, and maintaining the ability to simply roll off high frequencies when you want (plus the resonant peak control)?
A Varitone switch. I don't know why this didn't catch on.
@@jeke4977 Exactly 👍
@@j3ffn4v4rr0 you can buy this mod as a replacement for a tone pot in a rotary switch. 10 position, and there is a 16 position one. when on the guitar, you can not just turn it on and off, but switch it on the fly. more useful than the tone knob on the neck pickup.
Hi, This is Harry the one who came into ur store today, i will definitely be watching ur channel a ton. and thanks for everything!!
Old timer here haha, and im not the only one but I've been modding caps and pickups since the early 70's but what I'm realy impressed with is your new pedal! I truly hope you have amazing success with it if you decide to design and develop it more and market it.
Done : ) ruclips.net/video/zWRD5PawPw0/видео.html
Been playing and building guitars nearly 40 years and building valve amps a long time - Its not often I learn something new, Thanks! :D
I'm stoked it was helpful, cheers!
if you didn't know this, you have not been paying attention.
I have that guitar. I love the crazy bright sound. To lower the peak , I wired the bridge pick up through the tone control. Fender does not wire it through. Makes a huge difference. Also added a treble bleed. Cheers from Sacramento
This is probably the most helpful and approachable "mod" video I've ever seen on YT. A handful of ceramic capacitors (still cheap nowadays) can make a huge difference in letting anyone create their "personal tone." (I bought a decade box specifically for messing around with tone. 👍)
I know a pro blues guy, who always gets the hottest singles he can find. Some of his fans think this is for volume, to overdrive the preamp and get his distinctive growl (he despises stompboxes other than a very occasional wah). It's actually to crowd the mids and get away from the "icepick" tone of singles.
On the other hand, whenever someone says their humbuckers sound "muddy" or "muffled," I tell them to back 'em down a few turns, to un-crowd the mids. And if they get new PUs, to go cooler NOT hotter.
How is there not 1000 videos on this?! Im obsessed! bought 100 different caps to experiment with...Thank you for this!!
That right there is the fun part for me, the experimentation part! cheers!
@@WaylonMcPhersonGuitar This may be the dumbest question youve ever heard but please bare with me...Is there any cap or "device" or anything you can wire in series like these caps tame the harsh end, that does the oposite? something that makes a muddy pickup brighter without touching the tone knob? sorry if thats stupid, im new to the electronics part of a guitar. Thanks!
Thank you for such a powerful idea. Bought a bunch of 560nF silver caps, since the bridge value was addressing a different issue also. Already tried it on a set of AlNiCo-5 Strat pickups. It let just the right amount of air out their tires.
On a spare P-Bass that had questionable pickups, I added one in parallel and a 0.5H ferrite core inductor (in my parts bin for 25 years) in series. It's much more sober and focused now. I didn't know how I was going to get it to sound right but now suddenly it does. Such a cool trick.
Your welcome , stoked you like it :)
I bought your schematics and have built 3 of these so far. I'm retired from owning a guitar shop in Texas for 3 decades and still do work for my customers.
I view these as tools to leave with players and let them run it with their gear to easily decide which caps to install. Of course I benefit by getting more work.
The response has been great!
I really enjoy watching your videos and have learned a few things as well. Including some of your very cool riffs! Thanks so much. Keep them coming!
@@LonestarSamurai01 Great to hear, I'm stoked!
Is this the Bill Lawrence mod? I just bought some Lawrence/Wilde microcoils tele pickups and there is an article on the website about 'tuning' the pickups using capacitors, which I guess is what you are doing here. Thanks for explaining this its a big help!
Utterly magnificent video! So clear and concise. I echo the thought that all Luthier mod shops should have your gizmo for customers to try sounds before committing to a mod. More videos please👍👍👍
I think a spectrum analyzer would do this video a lot of justice, but it is definitely nice that you can really hear the difference.
So is it kind of the opposite of compression? Or a sweet spot box lol can u invent some tuners that don't go out of tune too quick for my SG? I'd be most impressed with that! I'd get locking tuners but every bit of it is original even the pearl Gibson tuning pegs. I'll put pics of it on my page it's red heritage cherry 🍒 red but u can see the mahogany grain through it, best axe I've ever bought by a way. I just put new Elixir strings on it so maybe that's got something to do with it, wierd tho cos when I tune it it's sharp not flat ffs n its kept in its flight case when I'm not using it as there's no scratches or dings etc
The difference is dramatic, it actually sounds really good after the mod… And the little green box would actually be a killer tool to have if you’re playing multiple Strats and/or Teles in a live set up situation with different pickups on them! Great video!
Thanks! If you want to build one I've posted a video here
ruclips.net/video/zWRD5PawPw0/видео.html
That’s great, thanks!
I just bought a used Squier Bullet Strat from a pawn shop on evilbay a month ago. I replaced the pickups, the pickguard, and the machine heads. All the stuff that I didn't want any way. The pickguard and pickups, controls, and wire I replaced completely with better components. At least the wire and the capacitor are USA made. Everything else was made in China but it works for me and I love it! I like hotrodding my own guitars when it's something cheap like this and doesn't cost me any money really. And it doesn't matter because I'm not destroying or modifying any of my expensive guitars irreversibly.
Thanks mate. I was about to put some Duncans in my PRS. I can’t stand the 85/15 pickups as they have no character.
Just ordered! My clients will love this service! Thank you so much!
Gibson did this in the 60's with the Varitone on the 345 and 355
Excellent video Waylon there are also switches that use multiple treble bleed circuits and you flip tiny dip switches and choose which one you like.
I am building a superstrat with that revoicer pedal incorporated in the pickguard utilizing a 6 position rotary switch instead of one of the tones. Basically the wiring goes from the switch output to the rotary switch with 5 condensers (one position will be bypass) then to the tone pot which will act over the selected condenser. Doing the math it will end up having 5*5+5= 30 different tones before the pot modulation. Preatty neat having that revoicer pedal incorporated!
Very cool setup!
Now your catching up with BB King.
@@theofficialdiamondlou2418was gonna say! Now all that's missing is an inductor...
This is the most fascinating thing I've seen in a while on guitar YT, such a simple and clear mod. And, yeah - I think now guitar player just want that pedal of yours.
Done - ruclips.net/video/zWRD5PawPw0/видео.html
And now they can build it or buy it! ruclips.net/video/zWRD5PawPw0/видео.html
Really clever mod, well done man.
I have been doing this since the mid '80s. Just chanced upon it and pretty much have done this with all my guitars. So pleased to see you have a superb device like you displayed. Super cool indeed.
Thanks!
For a typical 2.3~2.8H Strat pickup, I prefer a slightly higher freq peak. ~2.2kHz has good clarity without sounding harsh. The cap value for that would be in the 1n5F to 2nF range (along with a typical 200-400pF guitar cable and ~140pF pickup capacitance). I use values like that on the tone knob. The useful versatility throughout the sweep is great.
Thanks!!n I found a 3.3nf capacitor at home and put it on my guitar, the bridge humbucker was ultra sharp, with this mod it sounds lovely. You are a Hero!
a cap in parallel across a pickup is just a tone cap with no pot. very small caps will bleed off the top end of the treble and pass everything else through. I suspect you're not actually shifting the Q-zero of the pickup - just nerfing its treble output a bit. The net result might be the same as a lower output pickup with a lower Q-zero though. Using a cap substitution box is a handy way to determine the cap you want. I made one of those in electronics shop back in high school. I take it your pedal is essentially a cap sub box thrown across a guitar cable.
Been playin a long time, never seen this before. Genius… thanks for sharing
Glad you liked it!
That external varitone box is a really cool idea, although it will sound slightly different on the output of the guitar when compared to putting them directly in parallel with the pickup.
When the caps are directly in parallel they form a resonant LC tank with the pickup's inductance. This resonance will be ever so slightly damped by the cap being after the volume and tone controls. Still, it's a good way to get an idea of the response.
This is only a difference if the volume control is rolled down. If it's all the way up, the cap in the box is also directly in parallel with the pickup along with the tone control (which is also a cap in parallel with the pickup, but with a pot in between) and the volume pot's total resistance value.
The main difference between putting it inside the guitar vs out is that the cables also have parallel capacitance and would contribute to the resonant frequency of the peak.
So, you would really also want to make sure you either measure the capacitance of the cable or use the same type and length of cable if you wanted to be able to exactly repeat it. This is kind of a variable capacitance cable, in effect.
The Source Audio Zio pedal, incidentally, has a tone switch that does this with 3 cap values to choose from and then the rest of the pedal curcuitry comes after so you can dial in a consistent buffered or boosted output
The BB King model Gibsons have a similar sort of rotary knob for various caps too. I'm surprised it never caught on more it such an easy way to change the sound of any guitar. Cheers.
@@Peterbrendanalbert Yes, it has about 5-6 different positions on it, I believe.
Well at least two other people know what I do. Lol. It’s like reinventing the wheel. Les Paul (the person ) designed the Varitone for BB King in the early 70’s. If I remember correctly it’s 5 positions ,and a bypass. But I could be wrong on that one. I almost bought and put one in my LTD/ESP. But did something more custom instead. 🤙
I would love to put the caps on push pull pots to be able to turn them on and off for even more tone options. I used to do all kinds of mods but I hadn't thought of simply putting the cap in parallel, Ill be playing with this one for sure. Thanks so much
Wow, the bridge really improved. G&L does something similar with their ASATS with MFD pickups.
As a electronic nerd who happens to play guitar, that was glorious.
I love my strats but I agree with the bridge pickups being shrill for my taste. My go to has been either and HSS setup or having a mini switch to run bridge/neck together (i.e. the Gilmour switch) but I'll have to play with the caps some time to see what works best for me.
Stoked you enjoyed it!
Wow, thanks for the tip! I've been fiddling with strat wiring for decades. I will certainly incorporate this, maybe even using a pot or mini switch.
Thanks, I think a rotary switch installed on the guitar would be nice too, cheers!
Heck yeah. @@WaylonMcPhersonGuitar
In your example, when you go to the bridge/middle position, I think you're getting both capacitors affecting both pickups. I believe you're running both capacitors in parallel at that point so the value would be 2.7 nf plus 560 pF = 3.26 for both pickups combined. Correct?
Yes, that is correct, same goes for Neck/Middle 560pf x 2, cheers!
Cheers for a great tip! I have a question: Which cap would you put on a bridge humbucker that sounds muddy and dull?
I bought a Vox wah pedal opened it up and changed the starting/end point of the potentiometer to be a bit less bright with toe down.
Sometimes I'll just have it on and leave it at a specific angle for a different tone, I think we're doing similar things but I like your way better.
Got an EVH Wolfgang Standard and replaced the Bridge Pickup with an USA made one that was way brighter. At least that's what I thought...With a .047 Orange Drop I made a Lowcut for the Neck PU and now they work beautirully together. So the other one had a muddier voicing? I'm sure I could have used a 1€ cap too, but I only had the orange drop.
Sounds great, what value cap would you recommend to tweak the bridge on a usa standard strat from '96? Im ok at soldering but crap at electronics values!!
I wonder whether this is the same effect that players used to get in a more primitive way back in the day by using long or curly cables? The effect on the bridge pickup was particularly striking.
Yes. Hendrix used it to tame highs
This is blowing my mind. Subscribed
Keep up the actual quality videos.
Pickups are surrounded by so much nonsense in opinions and marketing.
This is a fantastic technique, what you do in the opposite case? to make it brighter? Is it there any way to do that?
I like the adjustable capacitance box (revoicer) that you have ... better than having just one fixed value.
Genius mod + pedal, just got a package of capacitors and now I know what I’ll be trying to do with them 😁 that alligator clip method you were mentioning, is that as straightforward as attach cap to clip, attach clip to pot/selector? It’s all a little rocket science to me still but appreciate hearing you explain it all, thanks again!!
I just watched this, and I heard the difference with the mod. I really like that.
Subbed. Will this work with humbuckers?
Thanks! Yes, it work 100% with humbuckers too :)
As good a Strat tone(s) as I've ever heard at any price point.
Despite of Your Dog Shiz crayon drawing medium… 😆…this Video shows one and the best description, Visual and explanation of the sound of the hertz of pick ups. I’m a simple man, and a Bass Playing man. So Yeah…
And! I STILL can hear the difference and the concept…. Much Respect from Canada… 😊
Thank you much, don’t change.,and more pls… 🇨🇦❤
haha, thanks so much :)
Wouldn't mind seeing how to build the gizmo you're using, that would be ultra useful to play before getting in there with the soldering iron.
Several position switch. Capacitors. Two 1/4” jacks. Box. Bypass switch. Wire the same as done with the pickup switch. Each position on the switch connected to a different capacitor value. Arrange them in ascending or descending order by value. One side of your bypass switch passes the signal straight through, the other passes through the big capacitor switch. Done.
@@oqsy brilliant!!! Thanks for the info, very much appreciated.
Done ruclips.net/video/zWRD5PawPw0/видео.html
I like that breakout box you’ve made and you’ve inspired me to create my own; characterizing, tuning, and modifying pickups are on my list.
Here you go : ) ruclips.net/video/zWRD5PawPw0/видео.html
pickup height is important. first thing i do on a new guitar that the pickups dont seem right, adjust the height up or down and test test test. The other useful too is a decent eq pedal. guitarist have dozens of fx pedals, but no eq.
Your electric wizardry has turned on a tinker goblin in my brain and I'm gonna watch your green gizmo build vid next..; do you think when you demo your mods in the future, could you please play the same riff on each pickup? It really helps me understand the changes to the tone through my bad pc speakers.
Thanks Jake, glad you liked it. Good point about the playing too, cheers!
Just to add to this fantastic idea. For those who wouldn't want the fixed capacitance for each pickup and be able to play standard and also add more combinations you can add a four way switch to the pickguard and wire it thus: All caps would be wired to ground on one side as explained in the video. Position 1 on the 4 way switch is off to play standard. For the bridge with capacitor on, you solder the other side of the capacitor to position 2 input of the new 4 way switch and then the output of position 2 to the area indicated in the video where the bridge meets the strats 5 way switch. Do the same to the middle and neck pickups. The added advantage of this: You can play any pickup in standard guise by switching the 4 way switch off, you can select any pickup on the strats 5 way switch then select its appropriate capacitor on the new 4 way switch but there is now a new option. You can select the bridge and middle on the strat 5 way switch but have the choice of bridge or middle on the four way switch and the same with all other combinations. This 4 way switch configuration is different from the original wiring though for this reason: When you select bridge and middle on the strat with the wiring shown in the video, the two capacitors have a combined value. If you use a 4 way switch and use bridge and middle, one capacitor is switched off and doesn't affect the value of the other. However, what it will do is have a combined capacitance across both pickups and produce a unique sound for that pickup combination.
What would everyone suggest for doing this on an epiphone 335 with covered pickups? I’ve been wanting to get some pafs but i think I’ll try this first
I might be wrong, but xotic pedals have the 'Sweet', and 'Super sweet'. It seems like your creation has a click setting. The Xotic pedal is a smooth sweep type knob adjustment.
I wasn't going to subscribe UNTIL I saw you are from New Zealand. Gotta support my friends over there... except when the cricket and rugby are on. ✌️🇦🇺
Cheers man :)
Yih, ai could tell he was an Enzedduh straight away. Ai laiked hiz tist of the nick pickup.
I've never had a use for a 0.022µF tone cap. I almost always replace them with either a 0.01µF or 0.005µF depending on the pickup. This way I have the option of in or out. On occasion I've installed pickups that sounded great save for being a bit brittle and harsh so I put a 1000pF capacitor between signal hot and ground. Tames the harsh without changing the character of the pickup drastically. The difference the 0.01µF or 0.005µF makes is even more noticeable as you add gain and more so on the bridge pickup.
Super cool! You can also do this by just changing cable length! Longer cables have more capacitance to ground and thus give you a lower frequency resonant peak.
Coiled cables excel at this. Hendrix used them as a sound shaper.
@@terryenglish7132 yep. Radio Shack coiled are the best, cuz they’re the worst. If you know, you know.
@@terryenglish7132 Ritchie Blackmore, David Gilmour and Carlos Santana, among many others, as well.
PRS's Sweet switch in the pre-factory PRS Custom 24s was basically this mod, specifically requested by Carlos Santana when he switched to a wireless system and didn't like the extra brightness, but with a delay line component instead of a capacitor.
Great!
I rewired my tone control on my MiM Strat as the bridge was too bright; this would have been a better option.
This just might be what I need for my recently acquired 20 year old Squier Strat SE. The neck & middle pickups are OK, but I'm not loving the bridge pickup. Thanks for posting this!
No problem, cheers!
That was great. I was actually surprised at how nice it played before the tweaks. I didnt mind listening to that. The bridge was unpleasent was the first thing i noticed but you know, it was okay. But after the tweaks 😱 That made a massive difference, especially to the bridge. Much more enjoyable, the crunch was not as sharp anymore and it had gotten fuller and fatter. Really impressive stuff.
Thanks, Glad you enjoyed it!
That's very effective!
So if I understand my circuits correctly, then adding capacitors in series would increase the resonant frequency. And similarly, adding resistors in series would broaden the peak (reduce Q factor), while in parallel would sharpen it?
It's weird I never thought to do this even though I've understood basic circuits for a long time.
It's a great idea, looks a bit like the Vari-Tone which Gibson used to fit in some models of 335 and little like the "Bill Lawrence/Jerry Donahue" mode for Telecasters. I'll certainly be trying it out. Thanks !!
Very interesting! Does this work with every kind of pick-up? Single Coil or Humbucker? Passive or Active?
Been doing this and the Volume pot Frequency range bypass mods on guitars since the 90'S great to see others using some RLC bridge ideas to improve their axes. I use an ancient Capacitor decade box its a little ripper
I see others thought same: make a pedal based on your test box so one could have a couple choices; call it The Voice Box. Throw 3 switchable, in series compression circuits for fun. Hey, great simple mod, inspiring for sure.😂
Thanks, I have made it :)
mcphersonmusic.site/product-category/pickups/the-green-gizmo%ef%b8%8f/
Fantastic! is your pedal or box just a variable tone rotary switch with different caps and a bypass on/off switch? As a new builder/luthier in training I would love to make one of these boxes! do you have a schematic or is it basically I/O rotary with caps and bypass? Also I would love to know the cast of caps in the show.
Hi Waylon, Mike here, from Mule Kick Cigar Box guitars. While I order pretty hot pickups for my cigar box guitar builds that sound super great, I've always wondered about putting different capacitors in them to improve their sound, but capacitors really are a mystery to me. Probably should leave well enough alone but I'd like to learn more about the roll caps play in the whole thing.
What is the amp you are running through. I love those sounds. Thank you in advance
Have you noticed that turning down the volume pot just a teeny bit loads the pickup to give it a better sound ? I'm assuming the pickup "wants" to see its DC resistance, before going to hot. The treble stays about the same, but as you turn it softly down you can really hear the bass bloom. After that of course the treble rolls off. I play w lots of distortion which really brings the effect out. But it's there clean too.
Dang, dude, that’s a very cool mod! Great improvement!
Subscribed!
Btw, I really like using positions 2 and 4 as well, and the mod made them even more pleasing! 👍
Thanks man :)
You're a GENIUS! You could even add a small switch to turn this on and off. How can I make one of those switcher boxes?
Thanks, you can make one here :)
ruclips.net/video/zWRD5PawPw0/видео.html
Would you consider sharing the design of your capacitor box or maybe even selling them or kit versions?
Done - ruclips.net/video/zWRD5PawPw0/видео.html
@@WaylonMcPhersonGuitar Thanks!
Really interesting thank you for this!
I'll have a stab at making the capacitor selector box for this project, what would you say is capacitance range and steps it should cover? :)
All info here : ) ruclips.net/video/zWRD5PawPw0/видео.html
I looked at a lot of tone stacks schematics in many fender amps and I wired a extra large pedal box up the way I seen them and I can get the same sounds with out doing this to the guitar. I just got tired of pulling my guitars apart to adjust them when I could just twerk the pedal box to do it and it was easier . Nice video 🎸😎
That's very cool! Does it work in the opposite direction too? Can you make a dark pickup brighter, shifting the resonance peak to a higher frequency?
Awesome question. This is a rabbit hole worth diving right in to.
I suspect you need to put an inductor in parallel with the pickup to make it brighter. As an inductor is a coil, think about the middle position on a Les Paul. Two coils (pickups) in parallel.
@@cliffb2454Or change steel poles to alnico.
Most Strat pickups are the same construction neck to bridge, no "voiding changes" of the pickups themselves. The tone change is due to operating under different string vibration widths. Recent Squier pickups are 'underwound and higher magnet' following advancements Leo Fender did at G&L guitars where he used that technique to increase the signal to noise ratio of pickups. If a pickup is too brash then lower it closer to or flush with the pickguard, tip the bass side up, or get a 'reverse hendrix' pickgurard slot to put the bridge pickup with the opposite slant. Unless specifically wired at the factory or modded later, stock Strats have no tone pot on the bridge pickup - it's just pickup>volume>jack. Some do a switch jumper mod so the second tone pot controls both the middle and bridge pickups.
I have an EHX LPB-1 circuit wired into one of my Strats. It's wired to the bottom tone control and the second tone control is global tone.
For me it adds a variable boost while trimming a bit of the top end off so it's not so bitey.
The tonal changes are phenomenal! 👍 🎸
Will the same capacitor values work on a Tele?
Yes, any passive pickups, even humbuckers :) check out the latest video on how to build one, cheers!
Seriously solid advice and info! Reminds me of the great Yamaha Soundbook I used as A Bose vendor.
Thank you! This could easily be a MasterClass!
Glad it was helpful, cheers!
A cap in parallel to the Non grounded pick up , when the p ups are in series , can keep highs from being muffled or shape tones also.
Very cool trick Waylon, have you ever added that multi- capacitor knob to a guitar? Seems like it would be a more useful varitone switch.
Really enjoyed watching and hearing you play! The presentation was well produced, presented and highly engaging. Well done! I hope this channel gets the exposure it deserves.
Thank you very much!
If push/pull pots exist with a triple pole switch it would be cool to switch the caps in and out. If not, each of the 3 existing pots could be swapped out for push/pull switched controls. Just a thought
That’s a great idea! Would love to see build plan for a pedal like this, to DIY at home!
Done - ruclips.net/video/zWRD5PawPw0/видео.html
Done - ruclips.net/video/zWRD5PawPw0/видео.html
Thank u for this fascinating video. The changes sound so dramatic- amazing mod
Glad you enjoyed it!
Great job, the difference in tone was instant, surprisingly good and subtle yet obvious. Thankyou for sharing your knowledge 😊
Glad you enjoyed it!
Hey Waylon, great mod. I use a one pickup humbucker guitar with 8 k and only a tone pot. How is the wiring here? Between the hot wire and Pot solder contact? 22nF or 33 nF or 47nF? Thank you for an info and greetings from Düsseldorf 💥😎🎸🎼
I actually like the underwound PUPS.
The magic of 4-5 Kohm pups is the
Old Sixties Rickenbacher tones.
Too many guitar players play the
Bridge pup becuse they cant
Hear themselves in a mix, live or recording.
The total failure of on instrument ( guitar)
that is entirely voiced. Above
Muddle "C".
Recovering as much treble as possible from an electric guitar, allows a much wider tonal response with a single tone
knob.
PS this was Jeff Becks SECRET...
An Amp and guitar set to MAX TWANG TREBLE...... before
the tone or cap and resistance knob ...
At ANY position including the
wasted and oten unused
Neck PUP.
You burn fat or twanging with just rolling your tone knob around.
Basically a wah pedal in a knob
Jeffs Big Fat secret along with his
Vibrato and finger picking attack.
The G&L tone control with low pass and high pass filters moves that resonate peak around as well. The "grease bucket mod" and the Fender TBX control both move the peak around. To maximize the usefulness, put a switch that removes the tone control from the circuit or back in. Some Tele players put 1M Ohm potentiometer for a volume control to get "more twang" . Just the difference between Vintage wiring and Modern wiring in a Gibson guitar makes a difference in the resonate peak and the tone control response. Totally touchy stuff, totally cool to mess with it.
Just a really good idea. The change in the bridge pick-up was profound and obviously useful. I will be doing this as soon as I can get hold of some caps. Thanks a lot.
Just subscribed! Brilliant idea! If you weren't going to manufacture the cap device, which perhaps you should, is there a schematic available?
Done - ruclips.net/video/zWRD5PawPw0/видео.html
Isn't this the same or similar effect as different cable length? Or rather like how longer lengths of cable or curly cables seem to shift the peak down?
Cool little gadget! Cool video and very interesting, thanks for sharing.
Have you unintentionally just invented a new pedal that strat players would be interested in?
Indeed
It’d be easer.
I think guitar techs would be more interested in your “Gizmo”
We need that pedal and we need it now! 😮
Did you build the switchable capacitor box or are they available?
Wow, that was quite a transformation in tone. Well worth a sub. I'm looking forward to checking out your other tips. Like a few of the other commenters, I'd also be interested in learning how to make the little test-bed pedal you demonstrated. Great stuff.
I agree 100%! I was just about to say that in my own post.
Years ago I built something similar to help diagnose problems in fuel injection systems. I would definitely like to learn to build one ... VERY useful.
Done : ) ruclips.net/video/zWRD5PawPw0/видео.html
Sounds great. I tend to just go for whatever the the thickest cap I can find is(currently a pack of .05 orange drop's), and try to dial in the tone I'm going for. It usually works out, but I get that thick dark jazz tone that never gets used when the knob is maxed out. It's cool to have as an option though. Especially if I want to make the walls rattle some.
I believe the electronics in Alembic basses work on a similar principle of shifting the resonant peak.
Yup. It was called a Q switch or VQ potentiometer in the Series II electronics. I would say It's hard for most of us to get any of these.
I fiddle with my EQ pedal before deciding to change pickups, it sometimes gives me a desirable tone and sometimes it doesn't.
The capacitance trick is another arrow in my quiver!
This is great! Is there such a thing as a variable capacitor? Like a pot that has a continuous change in capacitance - as a different kind of tone control? Thanks very much!