I tried out an actual Dumble ODS head and cab back in '86 and it sounded fantastic. It had an influence on me so far as my pursuit of tone. I've never owned a Dumble (and sure never tried to build one!) but it helped me keep my ears open. I played in the shred scene in L.A. back then, and would go on to own Marshalls and Boogies and Fenders, etc. But I knew there was this great in-between sound. I didn't always think of it as the Dumble sound. These amps are custom made, and Alex only makes them for those who's style he can dig, because he puts a lot of time and effort into each amp. But there is this basic Dumble sound. It's very natural, has an incredible biofeedback element, and is made to be musical. They are more than amps, they are instruments. That being said, I think that players who want a Dumble sound should either purchase an amp like a Fuchs, Two-Rock, or any number of Dumble type amps; or, try to build their own. I think there is too much mystique over Dumbles. If someone wants that sound they should see what's more widely available.
I have seriously listened to so many amps on here over the last few weeks. Original Dumbles, original Trainwrecks, JM Trainwrecks, all the Dumble clones, Dr Zs, Bruno, vintage Voxs, Vintage Fenders, vintage Marshalls, vintage Harmonys, vintage Ampegs, basically every high end amp out there. Original Dumbles were by far the best sounding amps and Trainwrecks being a distant second. My thought was I guessed that Dumble sound was a pipedream. Until I found your video. Man you nailed it!! Your amp sounds incredible.
it only hurts halogen lights when you touch them with bare hands has to do with oil in skin reacting with halogen bulbs, but any other type bulb or tube it is ok to touch and since there arent any halogen amplifier tubes you can touch them all you want.
Beautiful build. Your wiring is top notch professional level work. Not to mention your attitude through the whole thing. I have built several circuit, from pedals to amps, and I about have a panic attack every time before powering them up for the first time. Take a bow, well done.
Thanks so much! The amp is still going strong. I learned over the years to take a slow and relaxed approach at the end of a build... if you don't expect it to work then it usually will lol
This is great man. Could you point out the main differences that you've noticed between the 124 and the 102? Both as an amp builder and as an amazing player? It would be very much appreciated! Thanks in advance!
Hey man - you’re such a cool guy - thanks for sharing this - build of the holy grail. Was so fun to watch, and the way you laid it all out was rad. Just want to say thank you - and that amp sounds beautiful. If you ever want to build one for commission - I would be into that! Let me know if that’s something you’re interested in. Such a sweet amp B - thanks
Well that turned out fantastic, where do you tap the circuit for your relays. There's always been a pre/post logic and I've always been a pre type of person, just curious where it's at in your build, this might push me to build an amp, I'm a drummer that loves guitar gear and a FOH AE that just loves to solder...🤣
Great build and pretty extensive with all those switchings and features. Congratulations for doing it beside getting very good sound! I mostly build tube studio gear like preamps and compressor, seeing how guitar amp is done makes me pretty paranoid about sources of EMI, noise, grounding, etc :) Learned a few lessons anyway, thanks for making video.
Hi Birdsnake Did you build your Dumble from a kit like Ceriatone? Id like to build one myself . Could you please point me to a schematic, parts or kits? Thanks DD
Great stuff thank you for taking us through your build. Ive owned some great tube amps but don't have the skills you have good luck in the future. What would you charge to build the amp you just built for the public?
Fantastic build and fantastic playing! I've watched all your dumble videos and really liked them. I'm just starting a #102 build myself with the help of the lovely folks at ampgarage. Great idea to run your midboost through the foot switch. How did you wire that up? I've been trying to figure that out. The only way I can figure it is that the midboost is only operable through the footswitch and not the toggle. Is that correct?
The amp sounds fantastic. Thank you for sharing your wisdom with us!!! 1. Where did you buy your kit from? 2. How did you determine the shield side of your orange drop caps? 3. Did you make them with a marker? I do not know how to check this without expensive equipment. Thanks.
you can go on Hoffman amps site- EL34 World. forum has archives of cap direction, and site has shop to buy parts. also tons of schematics, info on building, and a very informed group of helpful forum members. it's where I learned to build amps. and remember lots of original Dumble were built with standard Fender and Marshall power and output transformers. I built some beautiful clones, and would have done better business if I wouldn't have gooped them with fudge... people got ants... I got sued.
Thanks very much!! The chassis was from ebay... they show up from time to time. Usually, someone on ampgarage has a chassis available. I didn't use a kit. The parts came from mouser, antique electronic supply, and a few other places.
Great pretty work. Congrats! I dream of being able to solder as clean as you. Fantastic job.The 2 ODSs I have been able to see the chassis of when I was working at Carruthers shop had a lot of ribbon type of wiring in it that kind of surprised me. Yours is prettier.Awesome job.Do you plan on trying other speakers? Good luck. Peace and Love from LA.
Thanks so much for the kind words! From what I understand the ribbon cable builds were from the 90s... I like the look and build process of the classic style wiring. I would like to try it with a pair of G12-65 but the EV sounds fantastic so I haven't gotten around to it.
I don't think he used a "kit" per say. I believe he parted everything out. Maybe you're you're referring to the chassis? I'm curious to know where he got that chassis and maybe where he got his cabinet.
Funny you mention that because I had to rewatch the video to figure out what you were talking about, and then I was like "oh yeah, that!". Once I put it in the cabinet you couldn't see it at all... I just checked and I can't even feel that it's crooked. It is still my main amp... I play it about 75% of the time and Twin Reverbs or a 5e3 the rest of the time. Thanks for watching :D
Based on what others have said about building these, the average cost is between $500 and $1500 depending on how nuts you get with "NOS" parts and whatever. If you just order based on lower price off Mouser, and use a schematic that takes into account modern cap values, you'll be closer to the $500 price point. I see some large, fancy capacitors in the video, and it looks like he ordered a kit... so I'm going to guess he's closer to the $1000 mark.
@@charliemopps4926 About half the price was the chassis, head cab, and transformers. The transformers came from Classictone... the head cab was used from a guy on ebay, and the chassis came from Asia. It came out to around $1000 without the speaker/speaker cab. I got the orange drops from Antique Electronic Supply. The other parts came mostly from mouser. I also had some of it already stocked in my parts bin.
Sweet sounding amp dude. Ive never built an amp, and ive been wanting too. Of course Ive considered building a d-style amp. How did you track down the parts and the chassis?
i build gear for a living and twice ive shocked the shit outa myself, one of the times it made me black out for a split second i could smell burned skin on my finger tip, i got it worse though from a 47 thousand volt hei high proformance car coil, it hit me so hard my hand flew off and hit the bottom of the cars hood
Doesn't matter if you keep a hand in your pocket or not. If you get hit with that amperage, you're dead. But hey, if it keeps you thinking SAFE, ABSOLUTELY DO IT. Tube amps can kill you quick if you're not careful.
Hey there! Great job on the amp. I also have built myself a "102" clone and i love it. I notice you have a noticable amount of more gain than my amp. Curious of where you have the od trimmer set?
I have a pot on the back of the amp... it's at 25K when the pot is at noon... occasionally I'll bump it up a little bit with single coils, but generally I leave it right at or slightly below 25K.
Hi, just wanted to ask you. How did you learn how to build amps? You're a great talent. Amazing the way you play plus being able to build this. Thanks from Michael Newell from Niagara Falls, Ontario, Canada
Thanks very much! I started with build effects and then started to do basic work on my amps... from there I learned from the internet and the Gerald Weber DVD. Eventually I found ampgarage and continued to educate myself as I built my first amp from the ground up... now it's 7 years later and here I am :-)
Birdsnake Brown hey man what is the name of the Gerald Weber dvd? Also, how did you learn to read schematics and solder, can you recommend a book or something. I read a couple Merlin blencowe books to get some of the theory down, but it’s the practical stuff I’m lacking. I have been researching and looking for books on amazon, but it seems like you have an awesome grasp on all of this so that’s why I’m asking you
Is there any risk of the tubes working loose and falling out since they are pins up? Do you use any kind of retainer to keep them tight in the sockets?
I use the regular old style retainers like this one amzn.to/37g9hhd ... even in my vintage Twin Reverbs where the retainers are old and worn out I've never had a tube fall out or even come close. On those old vintage amps you do have to re-tension the sockets at some point, but they would have to get pretty loose for a tube to fall out.
Hi, I have a Dumble clone, but I wanted to ask you where I could get a faceplate that says Dumble by Dumble. I would really appreciate if you could tell me where to get one. And would that faceplate fit a Ceriatone HRM amp? Thanks from Michael Newell from Niagara Falls, Ontario, Canada
They come up for sale on ebay every once in a while. I haven't seen one in a while, but if you keep an eye out they do show up sometimes. The chances of it fitting are good, but you might have to enlarge some of the holes depending on how tight the fit is. Good luck :-)
Birdsnake Brown, where on ampgarage? I've been searching for good schematics and your amp turned out great. I'd prefer to use the same layout etc. as you've used. Could you perhaps refer me to the specific thread?
Ceriatone amps. Theh are from indonesia but ghey are excellent they have like 20 dumble variations and the same for marshalls . Four different train wreaks. And they are reasonable!!
Jeff, that,s not my amp ,,, i,m just commenting on what i thought it was! That a amp built from parts from ampgarage! But ceritone makes kits for some really great amps. They look just like his! You should check their web site. Jyst type in ceriatone. They come from indonesia so most order the kit without transformers and order american iron.
The power section shares some similarities with black panel fender stuff, but the preamp has more mids, and the overdrive is something completely different.
Your amp will sound a lot better if you get rid of those IC brand power capacitors...….they are cheaper in cost than other brands....and yes Fender uses them in their new production amps.....but they affect the sound. Sprague's are the premium brand but as far as my suppliers go, they do not carry the big caps anymore so the alternative is the F&T brand, which is a very good cap. Illinois Capacitors are just cheap Asian source garbage......they work but the sound will be notedly better with alternative brands such as the F&T...….from 35 years of experience. Next thing, you use orange drops throughout the whole circuitry. The orange drops are more costly than other film caps and bigger in size physically, both of those factors do not mean that the Orange drops are the ultimate film cap for sound. I tend to only use them in the phase inverter circuit when I build amplifiers...or rebuild amps for my clients. In your first gain stage, replace the orange drops there with either Mallory 150 series caps or Jupiter brand....but Jupiter has 2 types...yellow and red. It would be worth your attention to try all 3 in that position and listen critically to the amp as each one will have a sonic character that will be much better than an orange drop and will probably be much more musical. As for your tubes, if you chose the 5881 wxt Sovtek, good choice, but set the bias so that each tube pulls at least 35ma current draw. You can probably go higher in current draw.... The formula for determining the wattage output of each tube is critical. For 35 ma at 460 plate volts, (460) x (.035) = 16.1 watts per tube, and the 5881 should be good for a maximum of 30 watts on the tube, but you bias for 70% which is around 21 watts per tube. So at 35 ma, the bias is about 55% and on the cold side which is going to be kind of clean and not with much good tone as you would get out of the tube if its bias'd hotter. But as you bias hotter, the plate voltage should drop down. Book value for an RCA 5881/6L6 is 400 volts maximum on the plates, though they can take more....but the object of the game is to stay more close to 400. AS the plate voltage goes beyond, the tube response is more linear but it also gets brighter and more harsher & brittle.....too clinically clean. Lower plate voltage will sound more warmer and juicier with tone much like a 1950's amplifier. You pre-amp tubes also matter, the LPS version of the Russian tubes are good as well as the EH12ax7 due to the long plates......and the plate voltages should also be on the low side between 140 to 180 plate volts......higher will yield more head room but also more brighter and more brittle with less tube tone.....which means adjusting the node voltage in the power rail feeding the plates.
I have used a variety of filter caps over the last 20 years and the IC caps don't fail any faster than F&T or anything else. Sprague atoms are the only ones that seem to last forever. I read somewhere that people in the amp-building community are weary of IC caps because of a comment made by Gerald Weber, but in my experience, they work just as well as anything else.
I tried out an actual Dumble ODS head and cab back in '86 and it sounded fantastic. It had an influence on me so far as my pursuit of tone. I've never owned a Dumble (and sure never tried to build one!) but it helped me keep my ears open. I played in the shred scene in L.A. back then, and would go on to own Marshalls and Boogies and Fenders, etc. But I knew there was this great in-between sound. I didn't always think of it as the Dumble sound. These amps are custom made, and Alex only makes them for those who's style he can dig, because he puts a lot of time and effort into each amp. But there is this basic Dumble sound. It's very natural, has an incredible biofeedback element, and is made to be musical. They are more than amps, they are instruments. That being said, I think that players who want a Dumble sound should either purchase an amp like a Fuchs, Two-Rock, or any number of Dumble type amps; or, try to build their own. I think there is too much mystique over Dumbles. If someone wants that sound they should see what's more widely available.
I have seriously listened to so many amps on here over the last few weeks. Original Dumbles, original Trainwrecks, JM Trainwrecks, all the Dumble clones, Dr Zs, Bruno, vintage Voxs, Vintage Fenders, vintage Marshalls, vintage Harmonys, vintage Ampegs, basically every high end amp out there. Original Dumbles were by far the best sounding amps and Trainwrecks being a distant second. My thought was I guessed that Dumble sound was a pipedream. Until I found your video. Man you nailed it!! Your amp sounds incredible.
Thanks so much!! I couldn't be happier with it :-)
did you build this from examining an original dumble or were you able to construct this with the schematics that are available online?
Check out ampgarage.
it only hurts halogen lights when you touch them with bare hands has to do with oil in skin reacting with halogen bulbs, but any other type bulb or tube it is ok to touch and since there arent any halogen amplifier tubes you can touch them all you want.
🎉wow that sounds incredible and your detail to clean looking wiring was so dope!
Beautiful build. Your wiring is top notch professional level work. Not to mention your attitude through the whole thing. I have built several circuit, from pedals to amps, and I about have a panic attack every time before powering them up for the first time. Take a bow, well done.
Thanks so much! The amp is still going strong. I learned over the years to take a slow and relaxed approach at the end of a build... if you don't expect it to work then it usually will lol
Best sounding reproduction i've heard. Great dude!
Loved the way you did this, that was a cool journey. Couple of beers later and we get to hear an awesome amp. Thanks for doing this!
I know I am kind of randomly asking but does anyone know a good site to stream newly released movies online ?
@Aiden Taylor flixportal :D
@Genesis Davis Thank you, I went there and it seems like they got a lot of movies there :) I appreciate it!
@Aiden Taylor happy to help xD
Awesome video, start to finish! Thanks man. Also, points for the punk in drublic shirt!
This is great man. Could you point out the main differences that you've noticed between the 124 and the 102? Both as an amp builder and as an amazing player? It would be very much appreciated! Thanks in advance!
That amp sounds great mate, very well done, would love a Dumble amp!
Oh wow. That thing sounds amazing! Time to quit the dayjob and start building $60.000 amps 😉
Hey man - you’re such a cool guy - thanks for sharing this - build of the holy grail. Was so fun to watch, and the way you laid it all out was rad. Just want to say thank you - and that amp sounds beautiful. If you ever want to build one for commission - I would be into that! Let me know if that’s something you’re interested in. Such a sweet amp B - thanks
Thank you so much for sharing
Excellent presentation. You do an excellent job presenting this build.
Yeah uncle doug sez the same thing. Nice work!!!
Well that turned out fantastic, where do you tap the circuit for your relays.
There's always been a pre/post logic and I've always been a pre type of person, just curious where it's at in your build, this might push me to build an amp, I'm a drummer that loves guitar gear and a FOH AE that just loves to solder...🤣
Great work man. Would you be able to tell me where I can get the schematic from. Thanks
+++ This is Art üerfection in every corner, i love this so much+++ thank you for sharing
wow...what a great sound! great job!
Excellent man!! You did a good job!!
Dude u hit that sound Wow ! Sweetsound dig it thanks woo hoo just found this I bet u are gonna be called on to make these 🙌🎶🎶
Thanks for listening!
Great build and pretty extensive with all those switchings and features. Congratulations for doing it beside getting very good sound! I mostly build tube studio gear like preamps and compressor, seeing how guitar amp is done makes me pretty paranoid about sources of EMI, noise, grounding, etc :) Learned a few lessons anyway, thanks for making video.
Nice build!
Wow really nice work!! very much appreciated :)
Hi Birdsnake
Did you build your Dumble from a kit like Ceriatone?
Id like to build one myself . Could you please point me to a schematic, parts or kits? Thanks DD
How did you go about balancing the phase inverter?
I like the video, clean wiring. Did you build this from a kit? If not where did you source the chassis and parts?
Great work, In the book Design and Construction of Tube Guitar Amplifiers, there is the schematic of the Dumble?
dude this is a tough build
Anyone making a complete Dumble kit? Thank you
Great stuff thank you for taking us through your build. Ive owned some great tube amps but don't have the skills you have good luck in the future. What would you charge to build the amp you just built for the public?
Nice work, what chassis and transformers did you use? Wire dress and soldering look great!
Thanks very much! I used ClassicTone twin reverb transformers... 40-18004 and 40-18013.
I,d like to see an upgrade on the filter caps!! Those illinois are nit liked by many techs.
I've used them for years without any trouble.
You can build an amp AND you can play! Super cool ;-)
Fantastic build and fantastic playing! I've watched all your dumble videos and really liked them. I'm just starting a #102 build myself with the help of the lovely folks at ampgarage.
Great idea to run your midboost through the foot switch. How did you wire that up? I've been trying to figure that out. The only way I can figure it is that the midboost is only operable through the footswitch and not the toggle. Is that correct?
The amp sounds fantastic. Thank you for sharing your wisdom with us!!!
1. Where did you buy your kit from?
2. How did you determine the shield side of your orange drop caps?
3. Did you make them with a marker?
I do not know how to check this without expensive equipment.
Thanks.
you can go on Hoffman amps site- EL34 World. forum has archives of cap direction, and site has shop to buy parts. also tons of schematics, info on building, and a very informed group of helpful forum members. it's where I learned to build amps. and remember lots of original Dumble were built with standard Fender and Marshall power and output transformers. I built some beautiful clones, and would have done better business if I wouldn't have gooped them with fudge... people got ants... I got sued.
Killer!
Great video. Was this built from a particular kit? Wondering where you got the chassis and the face plate from?
Thanks very much!! The chassis was from ebay... they show up from time to time. Usually, someone on ampgarage has a chassis available. I didn't use a kit. The parts came from mouser, antique electronic supply, and a few other places.
Great pretty work. Congrats! I dream of being able to solder as clean as you. Fantastic job.The 2 ODSs I have been able to see the chassis of when I was working at Carruthers shop had a lot of ribbon type of wiring in it that kind of surprised me. Yours is prettier.Awesome job.Do you plan on trying other speakers? Good luck. Peace and Love from LA.
Thanks so much for the kind words! From what I understand the ribbon cable builds were from the 90s... I like the look and build process of the classic style wiring. I would like to try it with a pair of G12-65 but the EV sounds fantastic so I haven't gotten around to it.
Do you have a link to where you bought your kit and the schematic you used?
Thank you.
I don't think he used a "kit" per say. I believe he parted everything out. Maybe you're you're referring to the chassis? I'm curious to know where he got that chassis and maybe where he got his cabinet.
Cabinet do believe was mentioned off eBay... some other stuff also eBay/Amazon... chassis, schematic don't recall any specifics mentioned.
I think ceriatone has this stuff for sale
Thank you for helping out. We need more people like you.
I need good diagrams and schematics, I am new at this. I am a visual learner. Thanks again.
@@Finom1 no problem, good luck on the build
Nice doggo
Great job , sounds amazing.. the crooked pull would drive me bat shit crazy lol
Funny you mention that because I had to rewatch the video to figure out what you were talking about, and then I was like "oh yeah, that!". Once I put it in the cabinet you couldn't see it at all... I just checked and I can't even feel that it's crooked. It is still my main amp... I play it about 75% of the time and Twin Reverbs or a 5e3 the rest of the time. Thanks for watching :D
Chris, Amp sounds great! Didn't know you were in FTW - I have a repair shop in White Settlement. From a former TAG guy - good job!
Thanks very much!!
Hi, thanks very much for the info. I'll take a look on eBay.
That's sounds fucking insane! Beautiful work man.. (pardon the swearing, but I get overly emotional ... Haha)
How much did everything end up costing you as far as components & parts, and where do you purchase all your parts from?
Based on what others have said about building these, the average cost is between $500 and $1500 depending on how nuts you get with "NOS" parts and whatever. If you just order based on lower price off Mouser, and use a schematic that takes into account modern cap values, you'll be closer to the $500 price point. I see some large, fancy capacitors in the video, and it looks like he ordered a kit... so I'm going to guess he's closer to the $1000 mark.
@@charliemopps4926 About half the price was the chassis, head cab, and transformers. The transformers came from Classictone... the head cab was used from a guy on ebay, and the chassis came from Asia. It came out to around $1000 without the speaker/speaker cab. I got the orange drops from Antique Electronic Supply. The other parts came mostly from mouser. I also had some of it already stocked in my parts bin.
@@BirdsnakeBrown It looks sharp. Well done!
Which ot and pt did you use from classic tone? Used them in my deluxe build but not sure which to use for a dumble style
How much did it cost you roughly? Interested in doing something similar
About a thousand without the speaker and cab
nice job!
Sweet sounding amp dude. Ive never built an amp, and ive been wanting too. Of course Ive considered building a d-style amp. How did you track down the parts and the chassis?
Great job :)!
i build gear for a living and twice ive shocked the shit outa myself, one of the times it made me black out for a split second i could smell burned skin on my finger tip, i got it worse though from a 47 thousand volt hei high proformance car coil, it hit me so hard my hand flew off and hit the bottom of the cars hood
There are a lot of different plans for 102, I should say "fake" out there. Can you link to this schematic?
You really have to do your research. google for ampgarage.
Doesn't matter if you keep a hand in your pocket or not. If you get hit with that amperage, you're dead. But hey, if it keeps you thinking SAFE, ABSOLUTELY DO IT. Tube amps can kill you quick if you're not careful.
Hey there! Great job on the amp. I also have built myself a "102" clone and i love it. I notice you have a noticable amount of more gain than my amp. Curious of where you have the od trimmer set?
I have a pot on the back of the amp... it's at 25K when the pot is at noon... occasionally I'll bump it up a little bit with single coils, but generally I leave it right at or slightly below 25K.
Hi, just wanted to ask you. How did you learn how to build amps? You're a great talent. Amazing the way you play plus being able to build this. Thanks from Michael Newell from Niagara Falls, Ontario, Canada
Thanks very much! I started with build effects and then started to do basic work on my amps... from there I learned from the internet and the Gerald Weber DVD. Eventually I found ampgarage and continued to educate myself as I built my first amp from the ground up... now it's 7 years later and here I am :-)
Birdsnake Brown hey man what is the name of the Gerald Weber dvd? Also, how did you learn to read schematics and solder, can you recommend a book or something. I read a couple Merlin blencowe books to get some of the theory down, but it’s the practical stuff I’m lacking. I have been researching and looking for books on amazon, but it seems like you have an awesome grasp on all of this so that’s why I’m asking you
Alan womack I am interested too! This guys knows a lot! Its fantastic!
there's some good army Navy tutorials on soldering and tube circuits and electronics and probably everything
Where did you get the circuit boards and schematic, is this a kit?
It wasn't a kit. I sourced all the parts and I made the boards by hand... I learned everything else from amp garage.
First, I don't skip to the end. Its against my religion. Second thanks for taking us on this journey:)
LOL yeah, your epitaph will read "He never skipped to the end" :-P This is what has been keeping me busy for the last month or so!
Did you build the circuit boards?
Is there any risk of the tubes working loose and falling out since they are pins up? Do you use any kind of retainer to keep them tight in the sockets?
I use the regular old style retainers like this one amzn.to/37g9hhd ... even in my vintage Twin Reverbs where the retainers are old and worn out I've never had a tube fall out or even come close. On those old vintage amps you do have to re-tension the sockets at some point, but they would have to get pretty loose for a tube to fall out.
@@BirdsnakeBrown Thanks! Looks like Cary makes some nice tube sockets as well.
Hi, I have a Dumble clone, but I wanted to ask you where I could get a faceplate that says Dumble by Dumble. I would really appreciate if you could tell me where to get one. And would that faceplate fit a Ceriatone HRM amp? Thanks from Michael Newell from Niagara Falls, Ontario, Canada
They come up for sale on ebay every once in a while. I haven't seen one in a while, but if you keep an eye out they do show up sometimes. The chances of it fitting are good, but you might have to enlarge some of the holes depending on how tight the fit is. Good luck :-)
Do you build these for people and have any for sale?
I just build them for myself and for fun. Right now I dont have any available for sale.
Nice build man! do you have that schem and layout?
google for ampgarage :-)
Birdsnake Brown, where on ampgarage? I've been searching for good schematics and your amp turned out great. I'd prefer to use the same layout etc. as you've used. Could you perhaps refer me to the specific thread?
In the files section there is a thread of 102 info.
Is this a kit? And where did you get the Dumble faceplate?
Ceriatone amps. Theh are from indonesia but ghey are excellent they have like 20 dumble variations and the same for marshalls . Four different train wreaks. And they are reasonable!!
@@russellesimonetta3835 Thanks so much for replying. I also asked about your faceplate. It says Dumble on it. Did you get that from Ceriatone also?
Jeff, that,s not my amp ,,, i,m just commenting on what i thought it was! That a amp built from parts from ampgarage! But ceritone makes kits for some really great amps. They look just like his! You should check their web site. Jyst type in ceriatone. They come from indonesia so most order the kit without transformers and order american iron.
Russell E Simonetta E
What is this circuit most similar to is it like a hopped up bassman ?
The power section shares some similarities with black panel fender stuff, but the preamp has more mids, and the overdrive is something completely different.
do you build and sell them ?
do you experience relay plop?
No, the switching is quiet.
2:04 albert ayler?
I'm pretty sure it was from Coltrane doing Impressions at Newport in 63
Please schematic you amplifier. Dumble Overdrive Special 102 Style Guitar TKS
Your amp will sound a lot better if you get rid of those IC brand power capacitors...….they are cheaper in cost than other brands....and yes Fender uses them in their new production amps.....but they affect the sound. Sprague's are the premium brand but as far as my suppliers go, they do not carry the big caps anymore so the alternative is the F&T brand, which is a very good cap. Illinois Capacitors are just cheap Asian source garbage......they work but the sound will be notedly better with alternative brands such as the F&T...….from 35 years of experience. Next thing, you use orange drops throughout the whole circuitry. The orange drops are more costly than other film caps and bigger in size physically, both of those factors do not mean that the Orange drops are the ultimate film cap for sound. I tend to only use them in the phase inverter circuit when I build amplifiers...or rebuild amps for my clients. In your first gain stage, replace the orange drops there with either Mallory 150 series caps or Jupiter brand....but Jupiter has 2 types...yellow and red. It would be worth your attention to try all 3 in that position and listen critically to the amp as each one will have a sonic character that will be much better than an orange drop and will probably be much more musical. As for your tubes, if you chose the 5881 wxt Sovtek, good choice, but set the bias so that each tube pulls at least 35ma current draw. You can probably go higher in current draw.... The formula for determining the wattage output of each tube is critical. For 35 ma at 460 plate volts, (460) x (.035) = 16.1 watts per tube, and the 5881 should be good for a maximum of 30 watts on the tube, but you bias for 70% which is around 21 watts per tube. So at 35 ma, the bias is about 55% and on the cold side which is going to be kind of clean and not with much good tone as you would get out of the tube if its bias'd hotter. But as you bias hotter, the plate voltage should drop down. Book value for an RCA 5881/6L6 is 400 volts maximum on the plates, though they can take more....but the object of the game is to stay more close to 400. AS the plate voltage goes beyond, the tube response is more linear but it also gets brighter and more harsher & brittle.....too clinically clean. Lower plate voltage will sound more warmer and juicier with tone much like a 1950's amplifier. You pre-amp tubes also matter, the LPS version of the Russian tubes are good as well as the EH12ax7 due to the long plates......and the plate voltages should also be on the low side between 140 to 180 plate volts......higher will yield more head room but also more brighter and more brittle with less tube tone.....which means adjusting the node voltage in the power rail feeding the plates.
You fucked up the wiring on the tube sockets! You will have some noise with your configuration!
I tried to follow the known Dumble lead dress as closely as possible and it's a very quiet build but is there something specific you see?
IC Cap Filter... You Looking for trouble... Those cap are really low quality and gonna leak soon...
I have used a variety of filter caps over the last 20 years and the IC caps don't fail any faster than F&T or anything else. Sprague atoms are the only ones that seem to last forever. I read somewhere that people in the amp-building community are weary of IC caps because of a comment made by Gerald Weber, but in my experience, they work just as well as anything else.
Do you have a link to where you bought your kit and the schematic you used?
Thank you
I didn't use a kit but you can learn everything you need to know about building amps at ampgarage