Too Many Watts? | Five Watt World GA-40 Pt 1

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  • Опубликовано: 10 сен 2024
  • Keith Williams sent this in to be made as good as possible. In this first video I go through the amp and see what works needs doing.
    If you don't know Keith and his excellent channel...
    / @fivewattworld
    - - - - - - - - - - - - - - - - -
    These are things I get asked about a lot :
    Amp Tech Gear Used :
    Hakko FX-951 soldering station
    Weller SPG 80L soldering iron (chassis work)
    Rigol DS1054Z digital oscilloscope
    Thsinde 18B+ digital multimeters
    Kester 60/40 solder
    Techspray #4 No-Clean Desoldering Braid
    Below are things that make this channel possible that people don’t usually think about. If any of these companies want to send me new and wonderful toys, I’m open to that. I can’t take free stuff when it comes to the amps I review, etc, but for the stuff below, bribe away!
    Microphones/Audio Equipment :
    Guitar Amps : Royer R-10 Hot Rod and/or Shure SM57 (noted in videos)
    Voiceover Bench : sE Audio sE8 (small diaphragm condenser)
    Voiceover Streaming : Shure SM57 with shockmount and windscreen
    Voiceover Mic Arms : Elgato Wave Mic arms
    Guitar Mic Stand : Gator Frameworks short weighted base stand with boom
    Mic Cables and Guitar Cables : Mogami/Neutrik
    Mic pre : MOTU M2
    DAW : Logic Pro II on MacBook Pro 16 running Sonoma 14.5
    Plugins : No effects other than level matching/normalization unless a recording
    specifically has reverb etc added in post (rare, various Waves plugins)
    Monitors : Yamaha HS7s
    Monitor Stands : Gator Frameworks Desktop Clamp-On Stands
    Monitor Isolation Mounts : IsoAcoustics Iso-Puck Minis
    Headphones : Beyerdynamic DT 770 Pro (main)
    Headphones : Sony MDR-7506 (alternate)
    Video Equipment :
    Camera : Sony ZVE-10 with SmallRig Cage (main)
    Lens : Sigma f2.8 18-50mm (main)
    Lens : Sony ZVE10 kit lens (rarely used)
    B Camera : Apple iPhone 13 Pro (rarely used)
    Tripod : SmallRig 71” with SmallRig Fluid Video Head
    Streaming Mount : Elgato Master Mount S with SmallRig Ballhead
    Bench Light : SmallRig RC 120D
    Bench Light Diffusor : SmallRig Lantern Softbox
    Bench C-Stands (light and overhead camera) : Neewer Pro SS Heavy Duty
    Streaming Light : SmallRig RC 120B
    Streaming Diffusor : SmallRig Parabolic Softbox
    Streaming Light Mount : SmallRig 148CM Wall Mount Boom with Triangle Base
    Various Other Lights : Neewer LED Panels with Neewer Softboxes
    Video Software :
    Davinci Resolve 19
    Inkscape
    GIMP
    Because seriously, screw Adobe
    Ecamm Live (streaming software)

Комментарии • 143

  • @fivewattworld
    @fivewattworld Месяц назад +84

    Love the video! And yes, just what I asked for. My main combo amp. Love the “swampy” bias tremolo on this thing.
    I built it after reading that Grissom used one on his first solo record.

    • @socallars3748
      @socallars3748 Месяц назад +7

      All things considered, you did a good job! Nice little amp which made for a great instructional video.

    • @gerardoromano3436
      @gerardoromano3436 Месяц назад +3

      Hi Keith, love your channel, I´m a tech myself, I think you did a nice job, not being a tech, when you built that amp. I assume you´re not a tech....That amp has nothing terrible and It´s not going yo catch on fire anytime soon, the few loose nuts is part of the use and lack off mantainance, that´s what we techs are for. Again you did a great job with that build.

    • @AnyMajorDude-et2ub
      @AnyMajorDude-et2ub Месяц назад +3

      Hey Keith, good to see you take professional criticism so well. Lyle is in his best form when savage ... He's the Drill Sergeant of the amp world. So drop and do 50 Keith! 😆

    • @richclayton5785
      @richclayton5785 Месяц назад +3

      Like your channel. Glad you’re man enough to have a real tech like Lyle evaluate your work. What an opportunity he’s in demand.
      Like you all the more now.

    • @JeffMcErlain
      @JeffMcErlain 8 дней назад

      What a mess Keith... 😉

  • @BXGuitars
    @BXGuitars 26 дней назад +6

    "He loves doing things he's not an expert in"
    You just described me every time I pick up a guitar. 😆

  • @goodun2974
    @goodun2974 Месяц назад +8

    People who are genuinely curious and interested in learning are rarely offended by constructive criticism. I don't think Keith will have any problem with your assessment.

  • @kevinfarrellUK
    @kevinfarrellUK Месяц назад +10

    Honesty is best policy, especially between friends. It is not what you say, it is how you say it. If that was my build I would be hugely grateful and happy with everything you said. Top man. :))

  • @turkeeg7644
    @turkeeg7644 29 дней назад +2

    Critique and learning and instruction is not savaging someone. I had a teacher who told me things I needed to hear who was offering his hard earned knowledge with me. I was resistant felt slighted and he told me if I wanted to be a hack keep going I was doing great. lol😅.... I shut up and learned so many great things that I have been able to share with others. I also learned to check my ego but also to stand up for myself when someone was being disrespectful. To learn the difference . Thank you for sharing your hard earned knowledge.

    • @chipsterb4946
      @chipsterb4946 23 дня назад

      It is more than a bit sad that Lyle had to emphasize repeatedly that he did not intend to “savage” Keith. Saying that they are friends should be enough, but it’s not in today’s world. Dispassionately explaining why this is unsafe and here’s how to fix it is constructive criticism, not savagery.
      Overall I thought Keith’s build looked pretty darn good - especially if it was his first foray into amp building. I’ve re-built my first amp attempt twice already and it needs another gut and start over.

  • @goodun2974
    @goodun2974 Месяц назад +20

    I grew up in an era where you could buy and build electronic devices from kits sold by Knight, Eico, Heath and others; but what we have here is a Keith-kit !😁 If he is planning to keep this amplifier then he should make a new badge for the front that proudly proclaims *Keith-Kit*!

    • @cee128d
      @cee128d Месяц назад +1

      I grew up then as well. I built a lot of kits over the years. Todays kids have no idea what they are missing.

    • @fivewattworld
      @fivewattworld Месяц назад +5

      Ha! This was designed by a very close friend of mine, who indulged me wanting to build a better than they ever were clone of a GA40. All credit would need to go to him…all blame to me. 😊

    • @goodun2974
      @goodun2974 Месяц назад +1

      @@fivewattworld , You built this 12 years ago and I think it's a safe bet that you've learned a few things about electronics and soldering since then!

    • @markmcdonald5711
      @markmcdonald5711 Месяц назад

      @@cee128d Dynaco and Patco, early 70's stereo amps.

    • @joshuagibson2520
      @joshuagibson2520 Месяц назад

      Dynaco preamp kits.

  • @willmcbride4435
    @willmcbride4435 Месяц назад +7

    Likely, most of us watching are hobbyists, and you pointed out really typical issues and level-of-skill results that I see in my own work. It’s hard to get perfect results when you do one amp every other year. Keith has done us all a favor by offering up his own to help us all improve. Bravo to you both!

  • @goodun2974
    @goodun2974 Месяц назад +2

    If someone is building a kit, or cloning an amp, and has limited soldering experience, I would strongly suggest that they pre-tin all sockets, terminal strips, input/output connectors, and potentiometer lugs with solder. Any connection such as a wire or component lead to a terminal that will require a tricky reach into the chassis with solder and iron is a good candidate for pre-tinning; it will make life much easier as a beginning builder. Wires insulated with soft plastic such as the green heater wires shown here are a particular problem for newbies because traces of the melted insulation, or perhaps something it outgasses when heated, reject and seem to almost repel solder (and melted insulation will badly foul your soldering iron tip as well). When you're working in a really tight spot, especially a vertical chassis like the old tweed amps used, soldering to pots and sockets that are already mounted in place inside the chassis can be tricky to solder reliably, and visual inspection doesn't easily reveal any flaws. If you tin the parts with solder before you assemble them inside the chassis you will have a much easier time of it. ( This goes double if you're using new old stock parts that may have a layer of oxidation, and/or a greasy film, from 30, 40, 50, 60 years of storage. Clean them first ---- scratch brush, wire brush, scotchbrite pad, whatever ---- and pre-tin before installation. You'll be glad you did.

  • @tedc6694
    @tedc6694 25 дней назад +1

    Very cool. Love it when Simon and Simon goes on holiday and shows up on Magnum P.I.

  • @vanguard9067
    @vanguard9067 Месяц назад +7

    Great you guys have a good (and trusting) friendship. I’ve watched your shows together and really enjoyed them.

  • @wailinfree7350
    @wailinfree7350 29 дней назад +1

    Great job
    as always
    I'm impressed how thorough you are and your knowledge
    I'm sure Keith will appreciate what you do
    It's all about learning
    Thanks so much for sharing your knowledge over the years

  • @socallars3748
    @socallars3748 Месяц назад +3

    Nicely done Lyle, with just the right amount of brutality! All things considered, I think Keith did alright for a first build and he's fortunate to have you point out his errors. I'd be embarrassed to show you my first build! My subsequent work has gradually improved, thanks to guys like you, Brad and Frank.

  • @sseltrek1a2b
    @sseltrek1a2b Месяц назад +3

    this is so fascinating (and i know nothing about the electronics of an amplifier...)...helps me to appreciate people who have the knowledge to work on our gear...

  • @richclayton5785
    @richclayton5785 Месяц назад +3

    “Remonstrance” great word!

  • @demesisx
    @demesisx Месяц назад +1

    I love your work. Thanks so much for being such an amazing source of great information. You are one of the best. Thank you! Also, thanks for speaking up about Adobe being a bunch of monopolists! SCREW ADOBE!

  • @jimsalman7257
    @jimsalman7257 Месяц назад +3

    "Closer to Flush": A big 1980s hit song by the Indy-go Girrls.

  • @billklement2492
    @billklement2492 22 дня назад

    Looks like Keith did a pretty nice job! Certainly there were a few issues, but it's been working well for 12 years.
    Thanks for the critique. It shows where folks that don't solder for a living can so better. Also, really good points about using bolts of heavy components for grounds or attachment points.
    Thanks for the video!

  • @reverb508
    @reverb508 Месяц назад +5

    Great video! I'm sure Keith is taking copious notes!
    P.S. 9:23 - Matt Silvernut is my Chippendales stage name

  • @jonnybeck6723
    @jonnybeck6723 Месяц назад +4

    Thanx Teach...
    Lookin' forward to seein' this here clone get all dolled up!

  • @JeffBurkholder456
    @JeffBurkholder456 Месяц назад +1

    Lyle you are the man. I found you through Keith and I think you add so much to my universe of poorly understood amp building

  • @martinreid1740
    @martinreid1740 Месяц назад +2

    I realIy enjoy five watt worldand it's nice to see your honest opinions. Looking forward to hearing it when you've finished it

  • @richardlynch5632
    @richardlynch5632 Месяц назад +2

    If'n I was Keith, I'd be dish'n out "Thanks Man" for any and all tips, fixes etc...😁
    And pretty sure he does/will 😉👍
    Think the end product is gonna be an eye opener 😃
    Great video and looking forward to the next vid(s)...!!!👍👍

  • @shakeypeet
    @shakeypeet Месяц назад +2

    Morning Lyle . I have learned in my personal builds , That attention to detail is everything ......Cheers

  • @misterknightowlandco
    @misterknightowlandco Месяц назад +1

    For someone who built this for fun as a hobby, it’s pretty good. The wiring was fairly clean and I’ve seen worse solder jobs. Like he said, if it was someone claiming to be a pro and trying to take money from people then you bust their greedy corporate balls over every detail. This is just showing a friend how to do something. Cool amp!

  • @flo-bezee9547
    @flo-bezee9547 Месяц назад +1

    I love your videos and can't wait for you to work on my Fender Deluxe reverb reissue.

  • @brenthorrocks
    @brenthorrocks Месяц назад +1

    Thank you this was very informative!!

  • @weschilton
    @weschilton Месяц назад +1

    I love these videos... the wealth of knowledge from your experience is incredible.

  • @jonathanmanley6743
    @jonathanmanley6743 Месяц назад +1

    I've always thought it would be cool if you did a "rate my amp build" segment. I'd love to see what you think I could do better on my builds.

  • @LarsonGuitarPlayer
    @LarsonGuitarPlayer Месяц назад +1

    I've started taking notes when I watch these videos. This had some good advice about grounding. Can't wait for the follow up on this.

  • @pauldavis6356
    @pauldavis6356 Месяц назад +1

    Just an observation - @ 5:35 the brown & black power wires and the yellow twisted pair appear, at least in that camera angle, to be right in the way of the bolt that would anchor the chasis to the cabinet. Looks like they could come in contact with that bolt an erode the plastic over time. Just a thought.

  • @halbertking2683
    @halbertking2683 22 дня назад +1

    Everything with love .

  • @user-bg8jm4rg4b
    @user-bg8jm4rg4b Месяц назад

    wow i think its great to share i have learnd alot of corrections for my amp builds and a big thanks for keith for letting you do this its correction not rejection its how we all learn thanks so much

  • @floydfifty8095
    @floydfifty8095 29 дней назад

    I really enjoy both your and Keith's channels. As a guitar player, I'm inspired by vintage amplifier videos, and guitar/guitarist/history videos. Stand by for useless info comin your way. I worked in the telecom installation biz in the late 90s to early 2000s. Lots of power cable and data cable wiring and securing. So, we used those little plastic tools, and they are called spudgers. I'm not a stickler, nor a technical dude, so no need to change your terminology on my account. In fact, I'm more of a knuckle dragging, blue collar dude that gets to break sh*t for a living.

  • @picksalot1
    @picksalot1 Месяц назад

    Keith always comes across as very objective, and I think he will be very appreciative of your critique of his Amp build. We can't improve without identifying where problems exist. Looking forward to hearing the results of the improvements you make. Hope there is a before and after of the sound.

  • @thehaughtcorner
    @thehaughtcorner Месяц назад

    I've been a subscriber for a few months, and videos like this one are the most helpful to me, because they remind me of the limits of my knowledge and ability to repair amps and guitars. I've learned a lot and raised my game a lot from watching your stuff, and I pick up little things that aid my understanding and help me see what I'm capable of and what I should leave to others until I have more experience. I know so much more now about what I'm looking at, and what to look for. I may not be ready to do, say, a cap job yet, but I'm getting there, and all the little things you point out that even *I* can do make my amps better, and playing more enjoyable. I'm grateful for that.

    • @J.C...
      @J.C... Месяц назад

      Same. And now I really pay attention since I just got a new Fender amp. One that shows up on this channel quite a bit...a Hot Rod Deluxe. Funny how that works. I used to watch mainly for entertainment. Now I find myself actually listening intently 😂

  • @marclouis-boyard
    @marclouis-boyard Месяц назад

    I always have my headphones near me, but not now. First time I've been missing them that much in a long time, can't wait to hear more! I'll be back 🎸

  • @colbyjack7074
    @colbyjack7074 Месяц назад +1

    I called Keith. Went straight to voicemail: "I'm currently deep in the Himalayan mountains seeking emotional healing, and taking a soldering class." 😆 Actually, he did a much better job than most everyone would. The items Lyle pointed out seemed very correctable (by a pro like Lyle).

  • @stuarthossack7906
    @stuarthossack7906 Месяц назад

    Very enjoyable video. Done with respect and forensic attention to detail, I think you struck the balance just right. Love from UK.

  • @mattjohnson6916
    @mattjohnson6916 Месяц назад

    Great video! I love all the work you and Keith do so it is always cool to see you guys cross over. I can't wait to hear Keith's feedback about how it sounds and performs once it gets back to him after your work. You show a TON of great building tips here. Lyle, may your weekend be filled with good coffee, warm weather, and no poison sumac.
    Also, every time I hear "Transmogrification" I imagine someone putting the amp into Calvin's Transmogrifier Box.

  • @jimbucket2996
    @jimbucket2996 23 дня назад +1

    I like Keith, I'm subscribed to his channel, but I always knew he had a few nuts loose. Never thought someone would make a video about it though.

  • @richclayton5785
    @richclayton5785 Месяц назад

    With regard to switches getting broken. I just replaced a standby switch in a black panel Pro that got knocked.
    I used a short bat Carling and a back nut…maybe next time it will survive the ride to the gig.

  • @theyoungamptech320
    @theyoungamptech320 Месяц назад

    This is the kinda of guitar community we crave

  • @METEORAMPS
    @METEORAMPS Месяц назад +1

    Great vid dude! Congrats for your Channel. Reggards from Spain.

  • @jjcollins
    @jjcollins Месяц назад

    Looking forward to the finished product. If it is a "good" amp now, I know it is going to be amazing when you get done with it! Those older style Gibson amps (and clones) can be very cool!

  • @lsmiii
    @lsmiii 29 дней назад +1

    Brutal! Keith, are you OK? I wanted to try to build a Mojo amp until I saw how ruthless this critique was. 🤣

    • @fivewattworld
      @fivewattworld 22 дня назад

      Oh, I see a Mojotone kit in my future actually. 😅

  • @jayclark725
    @jayclark725 Месяц назад

    Has Keith seen one of your video's? ;-) He knew what he was in for. You were very reasonable in my opinion and helpful to anyone else wanted to know what good practices are.

  • @chokkan7
    @chokkan7 Месяц назад

    Another great presentation, Lyle. Only a few years back, these old Gibsons could be had for a song, and the cabinets (for the most part; they did use some particle board in spots) were built like tanks, good transformers, etc. The 'tone-sucking networks' (nicked that from the Guitologist, but it's an accurate description) and other quirks kept these amps from being all that they could be, and the speakers were often budget types, but they lend themselves to a complete re-build (as Keith did here) quite well.

    • @PsionicAudio
      @PsionicAudio  Месяц назад

      Well, this is a clone not a rebuild, but yeah. The Gibsons of the late ‘50s/very early ‘60s have always been sleepers.

    • @brianmccowan1949
      @brianmccowan1949 29 дней назад

      The early GA-40s that inspired this clone did not have what many refer to as the "tone-sucking" circuit. That came later as Gibson started trying to clean things up at higher volume levels - no doubt trying to compete with Fender. The particle board came later too. I have rebuilt 2 GA-40s. One from the early 50s with all octal tubes and one from the late fifties with the 5879 preamp tubes. The were both PIAs to work on - no board, all point-to-point in a tight chassis. They used pretty marginal capacitors, especially for the filters. But once rebuilt they sound glorious. I also built a non-tremolo single channel GA-40 from a Hammond organ chassis. I look forward to hearing this one - I bet it sounds great. I also bet that Keith does not own a set of nut drivers. It's hard to get those nuts tight without them.

  • @tracyc7813
    @tracyc7813 Месяц назад

    Keith seems like a reasonably nice fella. I like his videos.

    • @PsionicAudio
      @PsionicAudio  Месяц назад +3

      Incorrect.
      He’s unreasonably nice.

    • @goodun2974
      @goodun2974 Месяц назад

      ​@@PsionicAudio, as long as he doesn't keep stuff that really bothers him bottled up inside. It's such a fine line, but being ruthlessly nice can have a negative effect on one's psychological well-being; my mother was kinda like that, wanting to be a peacemaker, smooth conflicts over, and keep it all hidden, but every now and then she'd really boil over and you'd find yourself caught in the middle of a maelstrom. (Now there's a great word I probably haven't used in a decade or two). Anyway, I try to strike a more realistic balance ---- or defuse things by cracking a joke, possibly self-deprecating, perhaps not!

  • @victorbeebe8372
    @victorbeebe8372 Месяц назад +1

    Mahalo Lyle!

  • @paulshurmon138
    @paulshurmon138 Месяц назад

    Thanks for the video.

  • @sgt.grinch3299
    @sgt.grinch3299 Месяц назад

    Excellent breakdown. I’m looking forward to sweet tones.

  • @marshallohio5512
    @marshallohio5512 Месяц назад

    Gee, I would absolutely love having my build's critique by a real solid professional !!!! Nevertheless, this video is extremely valuable with the pros vs cons !!!! Oh, I highly recommend reading Rob Robinette material pertaining to all Tube Amp related topics !!!! At least Rob's Tube Amp Troubleshooting Guide !!!

  • @dhelton40
    @dhelton40 7 часов назад

    Well, you gotta start somewhere. The old lady in quality control is going to send this back to you and not be happy. Probably would do him some good to read up on good soldering practice. I keep toothed washers for switches and jacks...they ought to come with them. Nut drivers are really useful for tightening jacks and screws. Carefully drilling holes is sometimes necessary to mount terminal strips in older amps,...care should be use to avoid damaging the value of the amp. Holes should never be drilled in front or rear panels, and appearance counts. Building this is a very good place to start, as the mistakes are not in a valuable vintage amp. I would encourage anyone starting out to build some kits first. Soldering is something that gets better with practice.

  • @Slugg-O
    @Slugg-O Месяц назад

    Good video with constructive feedback - just the facts.
    I think it's a great build considering Keith is not a professional amp builder. I remember my first build. I've gone through it many times and still find things I could have done better.

  • @Strumbum01
    @Strumbum01 Месяц назад +2

    Great rundown, Lyle! Are those the polyester orange drops? Can’t wait to see, and hear, the finished product.

    • @PsionicAudio
      @PsionicAudio  Месяц назад +2

      Thanks. I haven’t checked yet. I don’t plan on changing the things that work (and are reliable).

  • @richm7410
    @richm7410 Месяц назад

    I too enjoy both channels.

  • @benlogan430
    @benlogan430 Месяц назад

    You can’t learn without someone critiquing your work. To learn one must humble themselves and allow the learning process to run its course.

  • @jeremycraft8452
    @jeremycraft8452 Месяц назад +1

    This is another terrific video on your terrific channel. WRT using the heater secondary center tap, most online guidance I’ve come across (e.g. RobRob, Merlin) says to use the center tap whenever possible. Here, you recommend balance resistors. Is that because this amp is cathode biased and you also want to elevate the heaters? What factors do you consider when making this decision?

    • @PsionicAudio
      @PsionicAudio  Месяц назад +4

      Thanks. I’ve just seen too many old amps come in with nuked PTs where the filament CT melted all the insulation off then burned inside the transformer itself.
      Vs amps that had artificial CTs and a similar failure, but instead of a dead power transformer there were two burned 1/2W resistors. Twenty cents later, the amp was healthy again.
      You can also get a better balance with resistors than you can with windings.
      I’ll still be referencing them to the cathode here instead of ground to take advantage of (minor but nice) DC elevation.
      In a fixed bias amp they would be referenced to ground.

  • @emerson909
    @emerson909 Месяц назад +1

    Great vid, I want you to beast my build 😂

  • @thewrongbike7709
    @thewrongbike7709 Месяц назад

    First time watching your channel. You point out a lot of things that most people don't even think about. One thing though: Plain metal nuts onto metal chassis. Don't they deserve washers? Even spring washers?

  • @tomk1tl39
    @tomk1tl39 Месяц назад +1

    👍 👍

  • @egoncorneliscallery9535
    @egoncorneliscallery9535 27 дней назад

    Does the chassis comes from a Frenzel? I have a deluxe myself. Different faceplate, though..

  • @user-hy6yq4uk8e
    @user-hy6yq4uk8e Месяц назад

    Do I see resistors on every pot? He tunes every pot for a specific resistance? Or is this a common practice in tube amp builds? I've piddled with pedals and just starting again to peek at the undersides of amps.

  • @kmetal83
    @kmetal83 Месяц назад

    Bravo!!!

  • @tedrobinson3802
    @tedrobinson3802 Месяц назад

    You certainly wouldn't want to to look my first amp.

  • @J.C...
    @J.C... Месяц назад +1

    Hey Lyle. I've got a couple of Hot Rod Deluxe questions for you. I just took the panel off my brand new one and the 5w resistors are siliconed together. Is that normal? They're also off the board by maybe 1/4", with white cloth? tubing protecting the legs.
    Is this how they usually are? Or has something changed? I don't remember seeing them glued together and that doesn't seem conducive to good heat dissipation.
    Is this how they usually are? Should I cut the silicone and spread the resistors apart so they have more airspace? My logic says they should be spread apart but you've been doing this for MUCH longer than I have so I thought I'd default to you 🤷
    Thank you for your time. I can't express my appreciation enough, sir. Thanks again!

    • @PsionicAudio
      @PsionicAudio  Месяц назад +1

      They’re fine. Off the board is a recent and good change and the silicone helps keep them from vibrating. Leave as-is.

    • @J.C...
      @J.C... Месяц назад +1

      ​@@PsionicAudioawesome. Thank you! Can't tell you how much help your vids are. Thank you for sharing some of your knowledge with us. Many of us appreciate it a great deal, my man. 🙏👊

  • @J.C...
    @J.C... 9 дней назад

    I can't stand protruding jacks on my Les Paul-style guitars. I did the double nut trick on all of them so they're flush with the nut.
    LOL and I just checked my amps to see how those switches & jacks are mounted but I can't really move those because pcb's. They're all flush mounted already anyway. 👍

  • @goodun2974
    @goodun2974 Месяц назад

    In my experience it's extremely rare to see a vintage chicken-head knob actually crack; I suspect that the modern-production Dacaware knobs that came with this amp kit are either a plastic formulation that isnt a true bakelite, or it's a bakelite formulation that uses a different binder/filler than the vintage knobs did (it may have been asbestos or some kind of lung-damaging silica filler being used in the vintage knobs).

    • @goodun2974
      @goodun2974 Месяц назад

      By the way, although I can understand why RUclips does it, it annoys me that if I re-read one of my comments and decide to go back and fix a spelling or grammatical error or a poorly thought out concept, I'll lose any ❤ that has been already attached to it....

  • @embreesmith7613
    @embreesmith7613 Месяц назад

    I have run 20 Maybe shall Watts for 25 years
    At one time I played out with a DL 10

  • @kmichaelp4508
    @kmichaelp4508 28 дней назад

    Good thing it wasn’t a Marshall clone! Do I need to say more Lyle?😂

  • @MatthewSwasta
    @MatthewSwasta Месяц назад

    I wish Keith would have done a reaction video to this one...😜

    • @fivewattworld
      @fivewattworld Месяц назад +1

      Oh, we’ll be going live to talk about it, :)

    • @MatthewSwasta
      @MatthewSwasta Месяц назад

      @@fivewattworld nice!

  • @billybingbong8501
    @billybingbong8501 Месяц назад +1

    Hey man love your videos. Stupid question, what camera do you use?

    • @PsionicAudio
      @PsionicAudio  Месяц назад +1

      Thanks! Sony ZV-E10 with a Sigma 2.8 18-50 lens.

  • @TheWolvesCurse
    @TheWolvesCurse Месяц назад

    Hey Lyle, love your content. i also follow 5watt, didn't know you guys know each other.
    do you have any experience with Engl amps? i havn't found a vid on them in your extensive upload history yet. i own a powerball 2 and love the thing, but recently i read they were made with very cheap components, and that only the "upper tier" like artist signature models, the special editions and the savage 60 and 120 were kinda "built well" (whatever that means). also apparently the all seem to be biased very cold. i do have some experience working with electronics from my job in maintenance, but i never work on live circuits (except the typical small stuff like sensors, and emergency stop switches up to 24v), so i'm hesitant to check the bias on my unit.

    • @PsionicAudio
      @PsionicAudio  Месяц назад +1

      Thanks! No, haven’t seen an ENGL in the wild in these parts, but I know many fellow techs who don’t think they’re very well designed/built. But that’s not my direct experience, so…

  • @daustin777
    @daustin777 Месяц назад

    Great Video! It is good to see another hobbyists work. Anyone know a good tube amp tech in Southern California (Los Angeles, Orange County) area?

  • @joeshepard
    @joeshepard Месяц назад

    Just wondering how long is your wait list is now?

  • @bunnyadrian
    @bunnyadrian Месяц назад

    Keith can take it ;)

  • @ikestoddard2458
    @ikestoddard2458 Месяц назад

    Lyle I am about to buy a MusicMan Twin combo amp. Clone of Twin Reverb, but 130 W allegedly. Do you have any good words about it? Bad words? Would you have a look at it for me?

    • @goodun2974
      @goodun2974 Месяц назад +1

      Lyle would probably tell you NOT to buy a Music Man amp; not that you can't get decent tone out of it but most Music Man amplifiers are hybrid amps that are partially or mostly solid state (therefore most definitely not a Twin "clone"), and many of the old transistors and other parts are almost impossible to get nowadays , and if you ever blow a transformer they are indeed "unobtainium" these days. I certainly wouldn't advise spending more than a couple-three hundred bucks on it at most, and only if it's working 100%.

  • @johnl8081
    @johnl8081 Месяц назад

    Rumor is that Keith is starting an amp repair/building channel called ‘5-onic Audio’……

    • @goodun2974
      @goodun2974 Месяц назад

      No, such a company would of course be known as "Keith Kit"!

  • @infectionsman
    @infectionsman Месяц назад

    Is it just me or is that power switch lug real close to those tube-socket pins?

  • @j.justinzimmerman9836
    @j.justinzimmerman9836 24 дня назад

    Nice little trick at 11:45 !
    JJZ…(°¿.°`)

  • @macintune
    @macintune Месяц назад

    Another great amp walk thru. I sending you another email hoping to get in line for your help on my amps.Bill subscriber since you reached 3k 🎉

  • @wesleymorris1
    @wesleymorris1 Месяц назад

    Ive been experimenting with using vishey tantelums as bypass caps, they work well on bypass caps down from the first preamp tube, but make it alittle to bright if used on your main preamp gain stage. I use non polerized electros, in those first positions. But im like the results, for a boomy amp, i think it would tame that.

    • @PsionicAudio
      @PsionicAudio  Месяц назад +1

      Be aware that tantalums will burn. Even when there’s no good reason. Most techs I know consider them completely untrustworthy.

    • @wesleymorris1
      @wesleymorris1 Месяц назад

      @@PsionicAudio yea ive heard that but ive also seen them on a i beleive it was a hammond organ, i repurposed from the the sixties, thats what gave me the idea. If it burns i will replace them. Im only using them on preamp bypass

    • @wesleymorris1
      @wesleymorris1 Месяц назад

      There also reccomended as great bypass capacitors for low voltage to ground, exactly what bypass caps do. Mr. Carlsons lab, said there great for bypass. So i figured i try them.

    • @goodun2974
      @goodun2974 Месяц назад

      ​@@wesleymorris1, tantalum caps can *short-circuit* and blow things up; they're extremely sensitive to even the most minor pulse of opposite-polarity voltage, more so than electrolytic caps. Don't use them!

    • @wesleymorris1
      @wesleymorris1 Месяц назад

      @@goodun2974 i think you guys better do alittle more research, these new tantelums are very rugged they use them in aerospace and military. They can take the heat. Masa boogey uses them
      . Yea they dont take reverse voltage well but i well within spec of the voltage. Its worth a try, if it fails, its only a bypass cap, to ground.

  • @jutukka
    @jutukka Месяц назад

    IMO good quality capacitors, both electrolytic and smaller coupling caps, are quite expensive. I was planning to recap one amp of mine, from 90's, but when I calculated the cost of those caps, and figured out how many sixpacks of beer I can buy with that money...

    • @goodun2974
      @goodun2974 Месяц назад +1

      Ah, but you can actually *own* an amplifier; you can only "rent" a beer!

    • @jutukka
      @jutukka Месяц назад

      @@goodun2974 Sometimes immediately after drinking ten beers I feel better than immediately after soldering ten caps. 🤔

    • @goodun2974
      @goodun2974 Месяц назад +1

      ​@@jutukka, two beers and I might be ready for a nap; after three beers, definitely.

  • @macgreiner
    @macgreiner Месяц назад

    Curious as to why some of these more modern rebuilds don't use breakers instead of the traditional glass wire fuses? Is it merely a cost decision?

    • @PsionicAudio
      @PsionicAudio  Месяц назад +2

      Breakers are very inaccurate and physically prone to failure.

  • @retread1083
    @retread1083 Месяц назад

    Looking at Schematic Heaven, apparently there are at least 3 different GA-40s.
    GA-40: cathodyne PI, 6V6 output.
    GA-40t Crestlline: cathode PI, 7591 output
    GA-40 Les Paul: paraphase PI, 6V6 output (and a funky shunt MV)
    Is this amp cloned after one of these, or something else?

    • @PsionicAudio
      @PsionicAudio  Месяц назад

      Les Paul variant

    • @retread1083
      @retread1083 Месяц назад

      I'm not fond of paraphase PIs but keeping it does make it easy to replace the tone-sucking shunt MV. Delete the 5nF cap. Add a 100nF cap to the plate of the upper triode of the PI. That feeds the CW end of the 1MΩ pot. The wiper then feeds the existing 20nF. At least that's how I'd do it. YMMV.

  • @RudolfWolph
    @RudolfWolph 28 дней назад

    Can't wait for all those pesky extra watts to get surgically removed.

  • @chrisquinn9104
    @chrisquinn9104 Месяц назад

    I can see a bit of what Brad calls “poke and pray.” Is that acceptable in some cases, or never acceptable?

    • @PsionicAudio
      @PsionicAudio  Месяц назад

      It’s not optimal, certainly. Most will be redone, but I didn’t want to belabor every little point.

    • @chrisquinn9104
      @chrisquinn9104 Месяц назад

      @@PsionicAudioI’m asking because sometimes I use the technique because it’s easier to change if I need to

    • @PsionicAudio
      @PsionicAudio  Месяц назад

      Lots of lots of amps are done that way. Some hold up. Most eventually don’t.

  • @steveDC51
    @steveDC51 Месяц назад

    I know this definitely does not apply to Kieth but some people ask for criticism when what they really want is praise.

    • @PsionicAudio
      @PsionicAudio  Месяц назад +1

      Sounds like a good topic for a 5WW video…

    • @goodun2974
      @goodun2974 Месяц назад

      ​@@PsionicAudio, I can remember turning in an early draft of something I wrote to a writing teacher with a note asking "please tell me how you think I can approve this paper". I had meant to write *improve*, or at least I thought I did.....😉 ( It's also a royal pain that for my entire my brain always writes copy inside my head far faster than I can get the words onto paper or typed into the screen; but now my short-term memory sucks, to the point that by the time I get towards the end of what I am actually writing I've forgotten exactly how I wanted it to finish.....)

  • @stevebeck3164
    @stevebeck3164 Месяц назад

    "Stay tuned for the transmogrification" ???
    Transmogrify - to change or alter greatly and often with grotesque or humorous effect.
    Intended word?

    • @PsionicAudio
      @PsionicAudio  Месяц назад

      Absolutely. As humorous effect…

    • @merrillaldridge2775
      @merrillaldridge2775 Месяц назад

      ​@@PsionicAudio The first time I ran across "transmogrify", it was in reference to a Root Goldberg machine.
      That, in and of itself, makes your application all that much more hilarious.