NOTE: As a viewer noted, the tremolo seemed to overdrive the output tube(s) a bit. As a result, I increased the value of the resistor between the oscillator and grid from 100K to 220K. Problem solved :)

@kickinvideo333

4 жыл бұрын

Whoa UD! The guitar fairy dropped a Legend Rock n Roll 50 on your doorstep!! That's the amp Billy Gibbons used to record ZZ Top Eliminator! Careful, that is one LOUD amp 📢🔊 Life is good 😎👍🏼

@UncleDoug

4 жыл бұрын

@@kickinvideo333 It is indeed, KV.....and it is truly LOUD !!

@Dennis-mq6or

3 жыл бұрын

After watching one of your educational videos I understand why the vibrato did not work when connected to the grids of both output tubes. The push pull circuitry cancelled it out! When you moved the tremolo to only one output tube grid there was no cancellation.

@UncleDoug

3 жыл бұрын

@@Dennis-mq6or Thanks for the helpful input, Dennis :)

Even with the sampling and/or compression artifacts in the audio, the Lesmann is one of the best-sounding amps you’ve had on the bench. This one is a keeper and your mods made it so.

@UncleDoug

5 жыл бұрын

Wow, thanks so much, Hub :)

@SanFranciscoFatboy

4 ай бұрын

bump :)

+500 points for using "WFO" - cheers!

@UncleDoug

5 жыл бұрын

It came my old motorcycle days, Chris, but still seems appropriate :)

That amp is SICK! Bright, but with a full low end. And dem cats can Really Play!

@UncleDoug

5 жыл бұрын

Thanks, Dave. That's exactly what I aim for in voicing an amp.....and Jack & Ollie do the rest :)

I’m always waiting for your next tube amp extravaganza!!! Thanks my friend!

@UncleDoug

5 жыл бұрын

You're welcome, Bill. This one features a rare gem, for sure :)

Bless you Uncle Doug for sharing your wisdom with us!!! Our family loves your videos!

@UncleDoug

5 жыл бұрын

You're quite welcome, F1. Regards to you all.

beautiful work as usual Doug . love the way you share you experimenations.

@UncleDoug

5 жыл бұрын

Thanks, Barry :)

that's gotta be one of the very best sounding amps that you have had on your channel, thank you for doing your thing!

@UncleDoug

5 жыл бұрын

Thanks so much, PS.....glad you liked it :)

From Leo: My mother's accordion had a magnetic attached microphone that was hard wired into a long lead cable. A low Z microphone could explain that 600 ohm input. Nice work.

@UncleDoug

5 жыл бұрын

Thanks, Barb. I agree.

@goodun6081

5 жыл бұрын

Barb Melle, it's interesting to note how many amplifier manufacturers in the late 50s and early 1960s were manufacturing amplifiers with labeled accordion inputs, amps that were marketed to accordion players. This includes Ampeg, Sano, Magnatone and all the various rebranded "Maggie's" such as Panaramic, Titanio, Giuletti and others. And yet, the actual pickups or microphone assemblies that would have been attached or fastened to the accordions themselves are virtually nowhere to be seen. I've bought a lot of vintage microphones at flea markets and ham radio Fest in past years, and although I would see lots of accordions at the flea markets they never had pickups attached.

@donaldheitger6731

5 жыл бұрын

@@goodun6081 I wonder why?

@goodun6081

5 жыл бұрын

@@donaldheitger6731 , like I said, it's a perplexing question. Perhaps the inclusion of accordion inputs on all those amplifiers was merely being hopeful on the part of the amp manufacturers, that they would be used for something other than loud rock and roll guitars. Certainly Ampeg founder Everett Hall detested rock and roll, and made every effort to *not* accommodate rock and rollers or anybody with long hair, any bands that were coming through the area and might have been interested in visiting the factory, and so on. This definitely put a dent in Ampeg's sales figures, until Hull was finally put out to pasture in the late 60s. Anyway, perhaps the anticipated, hoped-for (chuckle) glut of pickup-equipped accordions just never materialized. The old- guard musical equipment manufacturers we're slow to see that the rules of the game, indeed the entire game, had changed. And then the music market got really soft around 1969 and a whole bunch of manufacturers went bankrupt.

@demagmusic

4 жыл бұрын

@@goodun6081 I have a Farfisa "Transicord" amp (Solid state, sadly) with an accordion input. The connection looks a bit like a tube socket, actually.

Thant was a super cool trouble shooting video! Thanks for taking us along in such detail..can't wait for the next one!

@UncleDoug

5 жыл бұрын

You're welcome, DY. I hope you enjoyed the trip.

Great video Doug. Worth the wait for sure. Hope you and the gang are all well.

@UncleDoug

5 жыл бұрын

Thanks, Rob. Never better !! You too, I hope.

Great troubleshooting & mods UD sounds top notch! Thanks for sharing that was very entertaining!

@UncleDoug

5 жыл бұрын

You're welcome, James......glad you liked it :)

I'd be "less of a man" for not watching this Lesmann amp video. Thanks Uncle Doug.

@UncleDoug

5 жыл бұрын

Thank heavens you watched, ¿. You're welcome.

@thBrilliantFool

5 жыл бұрын

@@UncleDoug what's the best way to contact you to donate hardware? I'm considering getting some reissues of 1965 Fender guitar amps but not sure how they stack up to the originals. I hear they make them in Mexico now. Not sure whether to get a Princeton or Deluxe Reverb. What do you recommend?

@michaelszczys8316

5 жыл бұрын

Is that a ‘ Nes Lesmann ‘ or a ‘ Les Nessman ‘ amp?

@UncleDoug

5 жыл бұрын

If I were you, I would find a nice Silverface Princeton or Deluxe Reverb from the late 60's, early 70's. Their circuit is virtually identical to the Blackface versions, yet the price is about the same or lower than a reissue.....which will have PCB's, 1/4W resistors, and all sorts of corners cut to keep cost down. Give me your e-mail address and I'll contact you directly.....but make it a fresh comment. This one is buried too deep to find tomorrow.

@thBrilliantFool

5 жыл бұрын

@@UncleDoug your recommendation is much appreciated Uncle Doug, and this leads me to ask, if the price is nearly the same, and the circuit also nearly identical, then why not opt to buy a new reissue which has the added benefit of tubes that have not depleted any of their life cycle? Not questioning your wisdom, just trying to understand where you're coming from. Admittedly, I'm partial to the aesthetics of some of the reissues currently available in some of their limited edition versions.

I preferred the amps they used on WKRP- The Les Nessman ; )

@Bigjoedo66

5 жыл бұрын

LOL, I think their bestseller was the Jennifer Marlowe amp, :)

@UncleDoug

5 жыл бұрын

I wonder if Les ever played the accordion? Jennifer probably couldn't reach the keyboard and buttons.

@Slugg-O

5 жыл бұрын

@@Bigjoedo66 Can't deny the quality of those power tubes. ;-)

@clifffton

5 жыл бұрын

I think those were covered in Band-Aids

@OkFixer

5 жыл бұрын

Now, ..that’s funny!

The Lesmann rocks ! Great project, totally enjoyed the video. Thanks, Pedro.

@UncleDoug

5 жыл бұрын

You are quite welcome, Pedro. Thanks so much !!!

Wow, that amp sounds great. Probably one of my favourites. Thanks, Doug.

@UncleDoug

3 жыл бұрын

You're welcome, Andrew. Thanks !!!

Aluminum is difficult to drill because of it ductility and softness causes a constant contact with the cutting edge of the drill face. Probably to save on drill bits during manufacturing.

Lolol “I’m going to wait till the 4th of July to plug this thing in” 😂😂😂.

@UncleDoug

5 жыл бұрын

Glad you liked it, Dean :)

@deanf7086

5 жыл бұрын

Uncle Doug Yes I did, like your sense of humor. Good to see you back! I’m a electrical nit wit but am fascinated with old tube radios and amps. I love learning about them and your vids are the best. Really love your tutorials, you make them fun and very understandable even for the electrically challenged!

@UncleDoug

5 жыл бұрын

Thanks, Dean. We appreciate your time and interest.

@deasename5839

3 жыл бұрын

Afraid

So glad you are still doing repairs and posting videos! This is one of your best, all are your best!! The Tolex reminds me of the 60s Valco-Supro amps! The Gibson Crestline models also used similar Tolex. The cab reminds me of a 90s Fender Blues Jr.. someone at Fender must have known of this amp. You enlighten everyone of just how many unusual amps were made and still exist. To mod this vintage jewel was no mistake! You brought it to a wonderful condition for playing. It sounds great! Thanxz

@UncleDoug

5 жыл бұрын

Wow, thanks so much for all your very nice comments, ATL. We really appreciate them.

What a great amp! Well done Uncle Doug.

Check out Mr Carlson's Lab he gives good servicing advice for the hybrid Legend amps the semiconductors are easily destroyed, good advice for anyone not used to working on this type of amp

@UncleDoug

5 жыл бұрын

I am not strongly inclined to work on the hybrid circuit, John, but if I do, I will keep your suggestion in mind.

@hubbsllc

5 жыл бұрын

The upshot was, don’t go around with your probe AC-coupled in the high voltage bits and then zap the SS bits with the charge still stored in the probe’s or scope’s coupling cap.

@johnmcmahon3959

5 жыл бұрын

Correct being unaware of this hazard could end in tears

@goodun6081

5 жыл бұрын

@@hubbsllc , and although it's not a hot chassis, transformerless amplifier, an isolation Transformer on either the amplifier's power cord or the oscilloscope's power cord might be a good idea.

Nice job. The mystery transformer is in the anode circuit of V1B. It is therefore an _output,_ providing two isolated secondaries: 25K at the same level as the primary, probably a few volts, perhaps to drive a slave power amp, and 600 ohms to drive a studio mixing desk directly. Or maybe they are the send and return to and from the missing echo unit? Both are tapped off before the volume control of course. It is a feature, not an anachronism, and IMHO you should leave it wired in. Anyway the primary is part of that anode load and can't be removed without shifting the operating point of V1B. The 25,000 and 600 ohms are impedances, not DC resistances, and 600 ohms was a common standard for audio back in the day. I still have some 600 ohm stuff from the 1980s. The amp is overloading far too early. I would increase the 56K grid input resistor to say 100K, or maybe raise the cathode resistors to 4K7. At least you should remove that resistor you put across the 25K primary. The Echo and VIB remain mysteries. VIB must mean vibrato, but you need severe phase shifting to even approximate that. What was switched differently in the VIB and TREM positions?

@UncleDoug

5 жыл бұрын

Thanks for all your helpful comments and suggestions, EJ. I will definitely keep them in mind.

@EJP286CRSKW

5 жыл бұрын

Uncle Doug The more I think about this the more I think it must be the echo send/return. It fits right in with the current-drive current-out nature of reverb springs (=> high source impedance, low target impedance), and it provides gain (sqrt(25,000/600)) to compensate for the lossy transducers.

Thanks again Big Dave. Nice rewiring Uncle Doug. Thanks for sharing!

@UncleDoug

5 жыл бұрын

You're welcome, Daniel.

Great video again. Can’t get enough of it. Thank you so much.

@UncleDoug

5 жыл бұрын

You're welcome, III.

This amp sounds so genderfluid. You should add a switch to select the adequate pronoun.

@tomfrye9037

5 жыл бұрын

HAHA!(8-). Glad I didn't just take a swig of coffee. I'd have blown it all over the monitor.

@PipeCat1965

5 жыл бұрын

True, it's a hybrid - why force an arbitrary decision? Maybe a "metro intensity" control - leans this way, then that way. =)

@UncleDoug

5 жыл бұрын

I'm shopping for a 68-position switch to allow for all possibilities, Λογος :)

@goodun6081

5 жыл бұрын

@@PipeCat1965 , "leans this way, then leans that way"..... sounds like a definition of vibrato to me. I remember this line from a blues song, "She got Elgin movements from her head down to her toes / she rakes in a dollar most anywhere she goes / she's got it, Elgin movements from her head down to her toes / she rakes in on a dollar, most anywhere she goes......" And if you know what's meant by "Elgin movements", you're showing your age.

@tomfrye9037

5 жыл бұрын

@@goodun6081 All I wanna know is, was the crown set of lever set? Beyond that, I've had to put up with "Inca block" movements most of my life...

Just an awesome resurrection Uncle Doug!! That’s a real nice natural breakup in the LesMann!! I like it when a plan comes together..

@UncleDoug

5 жыл бұрын

Thanks, Luth. So do we :)

A lot of great troubleshooting and a great restoration. Thanks for sharing.

@UncleDoug

5 жыл бұрын

You're welcome, Larry.

Great work on the additional circuits. I really like Simple green for cleaning and it leaves a nice shine that is not glossy

Love your show, Uncle Doug! The amp sounds great after your skilled care.

@UncleDoug

5 жыл бұрын

Thanks, OS :)

Nice job, good gritty breakup! I like it, cool sounding trem.

@UncleDoug

5 жыл бұрын

Thanks, Ron :)

Great video Doug.. You have a lot of tube Amp knowledge. I’m quite envious my friend!

@UncleDoug

5 жыл бұрын

Thanks, Tony. Don't be envious. If I can do it, so can you,

@tonypotter1949

5 жыл бұрын

Not sure about that Doug! I’d love to have your knowledge my friend..

Thank you. A good video. Knowing electronics and knowing audio amps seems, at least sometimes, two separate areas of understanding. Thank you, again.

@UncleDoug

2 жыл бұрын

I would say that tube circuits are a somewhat arcane but still popular sub-category of electronics, Glen.

I want more man! Great video!

@UncleDoug

4 жыл бұрын

Thanks, FW :)

very cool mods and a nice tone to match the cab :)

@UncleDoug

5 жыл бұрын

Thanks, PN :)

Great Job Uncle Doug!!!!! Sounds Great!!

@UncleDoug

5 жыл бұрын

Thanks, R1.

Nice work Doug looks/sounds great! That thing is as old as me omg!

@UncleDoug

5 жыл бұрын

Thanks, HS :) Talk about old.....I was a senior in high school when it was built.

I am glad I found you Uncle Doug. You have taught me so much. I can't thank you enough. Thanks to Rusty too!

@UncleDoug

5 жыл бұрын

We're glad too, VW. Welcome to our channel. We hope you feel at home here.

Just amazing! Wow what you can do ! Thank you !

@UncleDoug

4 жыл бұрын

You're welcome, Curtis. Thanks !!!

Great job! You turned landifill into a fantastic sounding amp!

@UncleDoug

5 жыл бұрын

Wow.....thanks, John.

This is certainly the best amp I've heard you build, the distorted character with the nice full treble and bass. It's everything you'd want, thank you for sharing.

@UncleDoug

3 ай бұрын

Thanks, Jules. It had exceptional tone.

I’m glad you inspect your amps before plugging them in and turning them on!!! As usual, a fun video.

@UncleDoug

5 жыл бұрын

Thanks, AB :)

Great stuff as always!

@UncleDoug

2 жыл бұрын

Glad you enjoy it, Amo :)

Great Video Uncle Doug!! I like the sound of this amp better than the last one!!

@UncleDoug

5 жыл бұрын

Thanks, Big Joe.

Great work sir! Love your informative videos and your keen insight.

@UncleDoug

3 жыл бұрын

Glad you like them, David.

I always enjoy watching you mod these amps into great guitar amps, please keep the videos coming, oh and a Merry Christmas and Happy New Year to you and your family for 2019.

@UncleDoug

4 жыл бұрын

Thanks so much, Simon. Likewise to you and your family.

Great video! Your great at explaining stuff! Thanks!!

@UncleDoug

5 жыл бұрын

You're welcome, Russ. Thanks !!!

Man that sounds good. Well done uncle Doug!

@UncleDoug

4 жыл бұрын

Thanks, Angelo.

Very Thorough. Another fine job and example for us amateurs.

@UncleDoug

5 жыл бұрын

Thanks, Evan.

Another awesome video brother uncle Doug. Great job.

@UncleDoug

5 жыл бұрын

Thanks, SB :)

Outstanding workmanship. Circuit and cabinet!

@UncleDoug

3 жыл бұрын

Thank you very much :)

Im quite sure that speaker is glad to be rescued from polkaland to rockland,great vid and sounds awesome!

@UncleDoug

5 жыл бұрын

I have a feeling you're right, Ted. Thanks.

Incredible Job in all respects. I learn more watching you than any other electronics teacher on the web, no kidding. I think it's your background teaching to young persons, who seldom brook messy explanations without eye rolls ;) You talk slow with well chosen words..they sink in: thank you. The pets breaks are hilarious. You inform, you inspire, you amuse.....Uncle Doug you rule!

@UncleDoug

5 жыл бұрын

Wow.....thanks so much, Uhoh. I really appreciate your kind analysis and comments.

Excellent video. Thank you for sharing your work. peace. :)

@UncleDoug

5 жыл бұрын

You're welcome, L :)

Damnit, now I have to go listen to More Than A Feelin' by Boston! Nice work, Doug- you really know how this stuff works!!

@UncleDoug

5 жыл бұрын

There are worst things to listen to, Laura. Thanks so much :)

Nice job! I really like the breakup the amp has.

@UncleDoug

5 жыл бұрын

Thanks, Larry :)

Uncle Doug , AGAIN... you amaze me! You are TRULY a great teacher and builder! By the way , the logo on that amp kinda looks like the one on the Stage Right Amp.

@UncleDoug

5 жыл бұрын

Thanks, Wayne. I think the logo is the only similarity :)

Sound fantastic. Nice Bass response. You been practicing !!! Great Job as always.

@bertrodriguez3087

5 жыл бұрын

And you left me thinking about the feeding the grids for the outputs directly. I would think the problem you were having with the second tube is an out of phase problem if you pump them both directly. That would explain why one works and the other doesn't. The other is 180 off.

@UncleDoug

5 жыл бұрын

Thanks so much, Bert :) You could be right.

Superb job !

@UncleDoug

5 жыл бұрын

Thanks, Mr. O.

Fantastic work again Uncle. I had a Minerva 415W tube radio from 1940s, once belonging to my grandparents. It was sort of working while I was at high school, some 35 years ago, with a beautiful warm sound, but then ceased to work, thanks to my stupid uncle for leaving it under a dripping roof. I am a bit electronics hobbyist, but these tube setups were like Chinese to me. After watching you videos and digesting the information you provide with that friendly and couraging voice, they are not total aliens to me anymore. My first project now is to bring that beast into life again, hoping to find proper replacements for her already too old and beaten tubes of course. Thank you again for sharing loads of information with us.

@UncleDoug

5 жыл бұрын

You're quite welcome, LS. We're glad the videos are helpful and wish you the best with your project. Be careful !!!

Doug, I really appreciate that you don't get mired down in the theory when deciding to do some mods & are not 'afraid' to just launch in with the knowledge & experience you have and do the good ole trial and error method. It makes it easier for us others to understand that you don't have have a road map, just some common sense. tube circuits are very forgiving so even if you make a 'mistake' most tubes will recover...even red-plating output tubes as long as you don't leave them that way for too long.

@UncleDoug

4 жыл бұрын

Thanks, Glen. I encourage all budding techs to use trial and error at every opportunity. Once you gain experience and knowledge, the trials get better and the errors become much less frequent :)

WOW sounds great UD

@UncleDoug

5 жыл бұрын

Thanks, Mr. T :)

I love the breakup in that amp! Nicely done!

@UncleDoug

2 жыл бұрын

Thanks, Matt :)

What a great sound she makes. Great job and the echo section sounds excellent too. If only the Lesmann crew knew what was going on in post accordian USA.

@UncleDoug

5 жыл бұрын

Thanks so much, James. Little did they know :)

👍👍 nice job in restoring everything Sir Doug 👍

@UncleDoug

5 жыл бұрын

Thanks, Jim :)

Nice work 🎉

@UncleDoug

2 ай бұрын

Thanks :)

Great tone !

@UncleDoug

5 жыл бұрын

Thanks, SP.

Nice work!

@UncleDoug

3 жыл бұрын

Thanks!

I'm late again thanks to a big storm Sunday, just got internet service back. Interesting amp and repair solutions. Great sound.

@UncleDoug

5 жыл бұрын

Sorry to hear of your problems, Andrew, but glad you liked the video. Thanks !!

Ripping good stuff as always. You'll be happy to know that I repaired a Fender Deluxe Reissue amp this morning. Just a couple bad solder joints on the primary 12AX7, but it's my first tube amp repair. ( Oh the braggin' there'll be)

@UncleDoug

5 жыл бұрын

Thanks, Mr. CC. Congratulations on a successful repair :)

That Sounds totally Awe Suuuuuuuuuuuuuuuuum!... Nice going Doug :)

@UncleDoug

5 жыл бұрын

Thanks, Terence :)

Jack's playing is really coming along. He Shook Us All Night Long!

@UncleDoug

5 жыл бұрын

He and Ollie have been jamming a bit......on the back fence at midnight :)

Great Job Uncle Doug! I think it sounds great converted to a guitar amp. I knew if anyone could make sense of that beast it was you. I like your showing your thought process and experimentation with the circuit. I never would have figured it out. BTW I did send the tubes it had in it, They were wrapped in some white foam padding and taped inside the cab. hope they didn't get tossed. BiogDave

@UncleDoug

5 жыл бұрын

Thanks so much, Big Dave, both for your nice comments and your donation of the Lesmann amp. Yes, all of the tubes you sent were used in it.

A little late,,,but,,,, I know there is a tear running down the cheek of some old squeeze box player but gotta say the re-du on this one came out just great. Nice job pal.

@UncleDoug

5 жыл бұрын

Thanks so much, Carl :) One man's loss is everyone else's gain......

And spectacular certainly describes the tone you are receiving

@UncleDoug

3 жыл бұрын

Thanks, David. That's our goal :)

Got to love KZread, I had.to research you again even as a subscriber.

Yay! ANOTHER great video of suffering, toiling, cracking wise, and excelling! Thanks Uncle Doug!!!!

@UncleDoug

5 жыл бұрын

You're welcome, Brad. Just another day at the office :)

@bradleysmith4409

5 жыл бұрын

@@UncleDoug I guess that one of the reasons the low end sound is so pleasing is that being an amp designed for an accordion, as is the case of an electric piano, you have to amplify the lower octaves.... Does the circuitry reflect that Uncle Doug? Or are we talking serendipity Do Dah Day! ? ! :)

Nice job Doug those wiring alterations certainly paid off and we learnt a bit from you, thank you............................................Berni

@UncleDoug

5 жыл бұрын

You're welcome, Berni :)

Wow UD a rare and unique one. Congrats!!

@UncleDoug

5 жыл бұрын

Thanks, UB :)

The first thing that crossed my mind was that Richard Sanders had a side project, and the name was a contraction of his stage name, LES NessMAN(N)! OK....maybe too much of a stretch! LOL Great video, as always! Following you through the experimental stages, along with your explanations of same, are both jogging my memory and teaching me many things I'm not sure I ever knew to begin with!! Thanks so much! :-)

@UncleDoug

5 жыл бұрын

You're welcome, Norm. I always preach "experimentation" and I really feel it is the best way to achieve circuit and tone success.

Damn, it sounds good. Nice work

@UncleDoug

3 жыл бұрын

Thanks, WD :)

This episode is just like a detective story. Everything works fine. You have made a great job. A++++++++++++

@UncleDoug

5 жыл бұрын

Thanks, Stefan. All's well that ends well :)

Amazing sounding amp. That's the sound EVERYONE is looking for!

@UncleDoug

5 жыл бұрын

Wow......high praise indeed, George. When I "voice" an amp, this is the tone I seek, and I'm so glad that you like it too. Thanks !!!

Fascinating unit you got there. I introduced a friend from university to your channel a couple days back and now he's a huge fan of yours. He wants us to build an amp someday. Greetings and keep up the good work.

@goodun6081

5 жыл бұрын

At 18:00, looking at your simple hand drawn output circuit, there's no negative feedback? I would have thought they'd want a cleaner sound for an accordion. Since you're going to be modifying this unit anyway, you could put in a switchable negative feedback circuit, also known as a presence control. Maybe you could even use the rotary 3-way switch for that function.

@UncleDoug

5 жыл бұрын

Thanks so much, Mr. TM. Our best to you both.

@UncleDoug

5 жыл бұрын

That's a good idea, GU. Thanks !!

@goodun6081

5 жыл бұрын

@@UncleDoug , you'd also have to experiment to see which way the negative feedback gets hooked up without causing a feedback squeal, from positive regeneration or oscillation. That might be fun to show people in a KZread video! Good for peoples learning curve.....

@UncleDoug

5 жыл бұрын

I think most of us have heard what a positive feedback loop sounds like, GU. It would make a memorable and informative video segment.

I once bought a Cordovox accordion from strangely enough, a woman named Maggie. This thing was massive. It had an amplifier unit like this one, mounted in a cab. along with 2 x12" Fender speakers and a twin cab. which housed a huge point to point wired chassis with hundreds of caps and resistors. Each note played on the accordion itself had a dedicated circuit. There was a large umbilical cable that ran from the Accordion to the circuit board that also housed a ton of 6X8s , it also included a volume pedal. So, there you go.

@UncleDoug

3 ай бұрын

That sounds like a huge amount of circuitry and equipment......for an accordion, Tim.

Lots of work to get the Lesmann right, Uncle Doug but it sounds good. Very cool, thank you.

@UncleDoug

5 жыл бұрын

Thanks, BW :)

Just as I was starting to get 'amateur amp tech' withdrawal symptoms , there you were with another page turner of a video. A real deep delve into the eccentricity of the accordion amp designer and ghosts of the Mr, (or Ms, Miss, Mrs) Bodge-Up's that subsequently abused his brilliant, but quite insane mind with their ineptitudal dastardliness ! Uncle Doug to the rescue and all was well in the black arts of tubetremvibfiddling .. When you plugged in the guitar at the end , my reaction was ..."Holy C..p ..That has the potential to shatter the glass in your windows ". Reminded me of the sound of a Mk 3, 15 watt WEM Dominator made by Charlie Watkins here in the UK. Thanks again Doug, look forward to the next one..

@UncleDoug

5 жыл бұрын

You're welcome, Pete. Thanks for all the nice comments.

Nice work, uncle Doug sir.👍😉

@UncleDoug

5 жыл бұрын

Thanks, Ralph :)

I Really like the sound of this amp Top Notch

@UncleDoug

5 жыл бұрын

Thanks, Jim !!

Glad you made a great amp out of that beast. It sounded great on that first tune by the Jazz Kats but I didn't like the vibrato on my speakers at home! If you say it sounded great then it sounded great, keep up the fantastic work we appreciate it. Watching your videos is my entertainment between custom amp builds and local amp repairs. Mark

@UncleDoug

5 жыл бұрын

Thanks so much, Mark. The "vibrato" was simply a marketing ploy......only the tremolo actually worked.

In the end, I loved the sound of that amp!

@UncleDoug

5 жыл бұрын

That's what really matters, Al. Thanks !!

Another fun and educational video Uncle Doug! The final product sounds fantastic! My girlfriend now asks me if there are kitties in the videos since I told her the wonderful story about KC. I also bought her cat the same A frame house with heated pad as a present. Neither of our cats like the house, but the heated pad is a hit with the fur balls

@UncleDoug

5 жыл бұрын

Thanks, Andy. KC sends her regards. She is probably too fat to fit in the little A-frame house now.....but she loved it back when she was starving and otherwise homeless.

@Andy_Yates

5 жыл бұрын

@@UncleDoug You're a good man, truly. Beyond all the amazing educational things you share with us, how a person treats the little critters says a lot about a person.

Nice to see a craftsman at work.

@UncleDoug

5 жыл бұрын

Thanks, Clive :)

Also, that amp probably has never sounded better in all it's life, well done!

@UncleDoug

3 жыл бұрын

Thanks, Astro :)

What a great video

@UncleDoug

5 жыл бұрын

Thanks, Eliot.

another very good video uncle doug. i appreciate that you trace the wiring.

@UncleDoug

5 жыл бұрын

Thanks, Michael. I'm glad it's helpful.

Ya know, Doug...its surprising how much difference just having clean, proper power supplied to the amplifier(& fx) makes. I bought a 3-light outlet tester and it showed the outlets I use had live & neutral swapped. So I swapped them to their correct spots on the outlet and buttoned it back up. I swear to you that killed 90% of my hum issues. I couldn't believe how much hum I was getting. First, I was getting hum from the outlet itself due to the backwards live & neutral. Then I was getting EMI hum from it when I got anywhere close to it with a guitar. Finally, I was also getting hum from my cheap pedal power supply. So I fixed the outlet and that killed the power hum and the EMI hum. Replacing the power supply got rid of that hum/buzz, as well(and the last 10% of excessive hum). I honestly couldn't believe how much buzzing & humming I had prior to fixing the outlets. Now, it's quiet as a mouse. I can crank the amp up 100%(gain & volume maxed) and it hums less than it did at even 25% before. When I plugged in after fixing it all, I was ecstatic, to say the least. 👍

@UncleDoug

2 жыл бұрын

That's great news, JC. Thanks for sharing :)

Love your videos doug

@UncleDoug

5 жыл бұрын

Thanks, Mr T :)

Ach, now I see. What we here we is the newest of all tube biasing technologies. Bluetooth cathode biassing of the second triode :) Excellent work and great result. That amplifier was not just saved but it was reinvented.

@UncleDoug

Ай бұрын

Thanks, 9W :)

WOW @15:15 !!! It's GREAT to see Aerovox Caps , as I worked at Aerovox around 1998. Also my mom worked there for over 15years 🌴😎👍

@UncleDoug

4 жыл бұрын

They were a commonly used cap back in the day :)

Man that amp turned out fantastic!

@UncleDoug

2 жыл бұрын

Thanks, Dean. It's one of the best sounding "off brands" in recent memory.

@ezdno

2 жыл бұрын

@@UncleDoug This is kinda off base but what does something like rhis cost to repair? And is the legend Amp on video yet?

@UncleDoug

2 жыл бұрын

@@ezdno It depends on what it needs, Dean. Probably around $250 for labor plus parts and return shipping. The Legend amp was a Part 2 feature in one of my earlier videos.