I see "dangerous levels of gain" I click.

Man this is one of the best sounding amps you've done. Nice job dude.

I find watching Brad's videos very meditative, even if I only can follow 1/4 of the tech stuff. Great sounding amp!

Another nice one Brad. I rather sit here for an hour and half and learn something than watching a stupid TVshow or movie. Sounds great.

@tubical71

5 жыл бұрын

best answer ever! go build your own stuff, even if it won´t work first place, keep on doing it, and you end up with a unit that just will perform maximum right for you.

@jkhan337

4 жыл бұрын

i agree

@alainbrisebois8334

4 жыл бұрын

I spend hours and hours learning on you tube. I even learned to play guitar.

this amp sounds fantastic. can't believe you played Pantera with this thing. Awesome job man

That's probably one of the best sounding amps I've ever heard.

@johnymartin5411

3 жыл бұрын

Ever hear a hovercraft?

@Buhhhhhh-xi4ju

3 жыл бұрын

@@johnymartin5411 lol every hear of a mace?

@johnymartin5411

3 жыл бұрын

@@Buhhhhhh-xi4ju nope , but hovercraft are some pretty awesome amps

@frankferriolo9212

3 жыл бұрын

Yes!!

@madmod

3 жыл бұрын

Peavey Festival 200w head biased so hot you're changing tubes between songs. Take that to the bank.

i do believe what the client meant by "smooth" was the transition from clean to overdrive on the gain pot. A smoother transition from clean to distorted...

Re: Loudness. Very common on Hi-Fi systems. It adds bass boost at lower volume settings so that the sound doesn't go "tinny" because of the way our ears work. Look up Fletcher-Munson or equal-loudness contours for the details on the "why". Seems like this might be a nice thing to have in a practice amp.

@dwaynemcallister7231

4 ай бұрын

I recall the stereos systems of the '70's and they usually had a loudness button.

Yes! A switchable NFB is my favorite mod. Tonally subtle but the amount of gain it frees up is crazy. It’s like an old school treble booster. This amp, with the Princeton tone stack, is far more Boogie Mk1 than Marshall. The bottom end and clean is great! No fizzy bullshit either!

@alainbrisebois8334

4 жыл бұрын

I was just picking my brain on what amp has that killer of tone.

@IAmKillEveryone

2 жыл бұрын

You're spot-on with the NFB analogy imo. If more people looked at it as an built-in treble boost pedal, they wouldn't be so apprehensive about them.

That is definitely one of the best amps you’ve done over. You really should design and sell your own brand, even if it’s limited runs. I would also love to hear these amps in a small rig with a right matching cab and some comp and delay with a tube screamer to really get the amp pushing.

Man, that's the sort of amp I want right there.

Amp sounds killer man! Thanks for your slow burning videos. Don't change a thing! It's nice to just sit back and observe your thought process. Also, it's a nice change of pace in the rush of every day life. Keep on truckin'!

love your videos! I just found your channel last week and I've been geeking out ever since! I subbed 10 minutes into the very 1st vid! Thanks for your knowledge,humor and ability to explain in a very entertaining and interesting manner!

@TheGuitologist

5 жыл бұрын

Welcome aboard, Mike! Buckle your seatbelt.

I'll bet that guy was pleased with that job. What a versatile amp that has turned out to be.

Standing ovation man. Great job. Always. fascinating to see where you end up and to watch a masters mind work. Thanks pal

What a fantastic sounding amp, qudos to you Brad, you know how to make these circuits sing!

Thanks for the Vid. I went to school for electronics, a vocation I never used. Watching your vids is ringing a bell. I might just get back into it.

Had to come back and watch this again.Genius conversion ma man,sounds awesome!

Stayed long enough to hear "I'm Broken" Dime lick. Appreciate the references you throw into the demo. Thx Brad!!!

Yeah! Pantera from the little amp!! Awesome video as always, these are the videos I love watching from you. Don't ever think that your videos are too long, most KZread videos are too short love this style of vid. Keep up the great work

@valvenator

5 жыл бұрын

yeah, most of his videos seem to long till you get past the 2 or 3 minute mark and than you're like 'wait, I just sat here for an hour watching this shit?' and than you look for another one :)))

@Atomic1710

4 жыл бұрын

Agreed .

Wow! That PRS and little amp sounds epic together and definitely some beautiful Fender tones without being too clean!!! Great job Brad and great playing!!! Bob in Germany

Aesthetically Reminds me of a Sears Silvertone, or a Magnatone style. Really cool conversion!

One of the nicest sounding amps in a while! Thanks, Brad!

Wow what a conversion, that thing sounds fantastic. Absolutely fantastic.

Re: "AC on the DC" - I'm sure he's trying to say too much ripple on the DC power.

@tubical71

5 жыл бұрын

yea, but the amp sounds ok, hum whise....;)

Love the closeups at 25 minutes in! I’ve made point to point connections that were all rosin too. You’ve got an experienced eye!

Loved this video !! It's awesome to hear the reason for changes and see the changes! Playing later AWESOM !!! Loved hearing you play !!!

Great job on this one. It sounds great all around, but it's really the clean sounds that are gorgeous on this one. I'm sure the owner was blown away by the end result.

That's got to be the hardest job any musician could ever have,having to send the sweetest tones and vintages amps back to the owners, you always make great sounding circuits Brad,awesome skills bro.

At 30:00, that can capacitor should have been soldered to the backing plate from factory, but it wasn't, also the fact they used pop rivets to mount the backing plate to the chassis is kinda cheap and cheezy... not a good way of getting a proper ground. If I utilized the original can caps I usually drill out the rivets and use screws/nuts with star washers, and then I solder all the ground posts on the can to the backing plate. Another awesome video! Keep 'em coming, Brad!!

Beautiful point to point beast! Isolate and protect leads on this kind of circuit is laborious, but always needed.

Brilliant video. What a great in-depth look and you have turned it into an amazing amp.

Waow Brad! Cudos & hail to the Guitologist!!! Awsome conversion

Excellent work Brad ! How could any one not be happy with that Amp !

Your best video yet. I've watched this three times, great amp Brad. Thanks.

can't watch it enough. your playing is just the best ever, at least I think so. and the amp sounds out of this world.

A long one, but as always, informative - Keep 'em coming. Thoroughly enjoyed.

Great video. Loved the clean up of the innards and the end result. So fun to listen to. Good stuff.

Dude, your amp skill are amazing. That thing sounds awesome. Nice chops too! Thank you!

Brad, that is the most killer amp I've heard come through your shop. Fantastic. Well done!

Dad was Army Air Corps radio repairman, 1945-46 Guam , I find your old amp fixes fascinating.

Kept my attention the whole time Brad. I'm digging the cut aways, if that's what they're called. Amp sounds like what your client wanted.👍

Commissioner: "What was the cause of death Detective?" Detective: "A cold solder joint sir." Commissioner: " Damn Hippie's."

I don't usually comment but I just have to say...Wow. This really cleared some mud for me. The amp sounds great. Big, bold, and honest. Much appreciate the inspiration you've given me for my own tube amp builds and conversions. BTW... I sure wish that could get my right hand to do finger picking magic that you do so easily. A pleasure watching and listening as always Brad. Thanks for sharing your wisdom and talent.

@TheGuitologist

3 жыл бұрын

That’s very kind of you to say. I did a video about fingerpicking tricks. You can search it out. Might help you.

Awesome to watch this. I restored a similar vintage mono 6V6 amp by Bell and also found the hum to be too large. I will definitely try relocating the center tap location.

Awesome tone and video, love your tonal sense. Sounds awesome, great work.

Wow, Brad! Great job cleaning that mess up. Sounds awesome, too.

You play surprisingly well. Impressed with your soldering skills too.

Thanks for another great amp presentation. I love your work.

I owned one of these around 1970 when I was a teen. An adult tech friend who recognized that there was a ‘tech inside that kid’, gave me a pile of mics, speakers and tube powered audio gear. I used the amp and an 18” speaker to add a homemade ‘subwoofer’ to my piece-meal stereo system. Eventually the output transformer failed and I could not get a replacement. Mine had a ‘loudness’ and ‘rumble cut’ circuit. Yes, there was a tech there. 40 great years and all I’ve ever wanted to do is “fix stuff”. Those of us with skills need to mentor kids just like Mr. Cecil did for me. The man believed in me... what a fantastic gift!

Brad, you are very kind, generous, and diplomatic when it comes to the other guy's work! I have a few adjectives I might use....none of them complimentary. Bless your patient manner.

@normjacques6853

6 жыл бұрын

BTW, if you're forced, by design and space, to live with an output transformer adjacent to a power transformer, simply turning one 90 degrees (so that the cores are perpendicular to one another) will cut down *some* of your mutual inductance problems. I suspect you knew that....but you didn't mention it, so..... :-)

@normjacques6853

6 жыл бұрын

Also, where those gain adjustments send the amp into oscillation - try adjusting the pot(s) to just below osc. then measure the pot resistance...then insert a like-valued resistor in the wiper circuit so that that circuit can never fall below a minimum resistance...and get rid of the possibility of driving it into osc.....or just switch to a 12 AT7, 12 AU7, etc....but sacrifice gain.

Dude its like class is in session im really digging your video's this amp sounds killer on my studio speakers, i could only imagine how it sounds in person. Thanks for sharing your knowledge with us

I want to see you in your thinking cap, love the company having you on the tube, here at work

Nice playin Brad. Nice work on the amp !!!!

Learned a lot in this one and man, that sounds fantastic. Great work.

I love what you did for the tone over all.

Hey Brad, great video! I especially liked the part when you asked if we saw anything. Had me rolling. LOL

What a beautiful sounding amp. Incredible!

Great vid! Badass sounding amp, sounded like it had a sort of cocked-wah kind of tone at one point, I dig it! Hope the owner was happy, you put a lot of work into that!

Holy shit that thing sounds fantastic for rock and roll. and the clean sounds really nice as well. Hell of a job you did here, friend.

Great job, Brad! Congrats!

Great movie, and the tired eyes blues opener at the end was simply delightful. I'm Glad I caught it.

Great job Brad. From watching many videos (mostly yours) I've converted all of the Grommes Little Jewl amps to guitar amps from the LJ2 to the LJ7 and they all sound great. I'm especially fond of the octal (6SL7) pre-amp tube sound in the early models. Cheers. RC

Amp customized by the Guitologist! Sounds pretty nice. Looks like a sleeper. Well designed tube amps are awesome.

Fantastic work on this amp !

This channel is so relaxing to watch!

From 34:00 to 39:00 I love when you tell the effects of each part on the sound. I learned a ton!

Just finishing some work on a couple Marshall JCM 900 combo amps (4502 & 4102), came across your videos. Great stuff!

Wow, it really sounds amazing by the time you are done with it! Sounds like it would cut through the mix, too.

I really liked the riff you played when you tested the amps tone before beginning the modification......I thought it was a solid rhythm! The amp sounds great too.

Brother why are you not in a great band? You play awesome! Your channel is amazing and you showed me how to fix my Fender Champion 30 DSP! Thank you so much my brother keep up the good work . Coop

Awesome sounding amp. I'm just discovering these old pa conversions.

Very cool video and I always learn a thing or two from your vids and it's fun going along through these circuits. She sure did clean up from all the noise and man what killer gnarly gain. It was awesome to hear you talk about the same changes as I did to my 5E3 clone the 220k V1 plate load resistor and .022uF coupling cap. I do though have the .022uF coupling caps on V2 and V1 normal Ch .005uF. As you mentioned the 220k plate load resistor did drive the second preamp stage harder and with a lower coupling caps and man she cooks.

show off!! sounds great. been checking you out since the knight km15 amp

Great video ! Nice playing too!

You got that thing sounding creamy and smooth as hell when needed and plenty of snarl and groan when needed! I would absolutely love to own that amp. Fantastic job Brad, peace and respect from Ireland mo chara x.

Such a GREAT little Tone MONSTER..!! Super job Brad..!!

Nice playing, f'n GREAT tone, and a OUTSTANDING tutorial video of tweaking a tube amp.......I don't care how old the vid is.......THANK YOU for this!

What a straight up little beast that thing is.

Really enjoying watching you work on this stuff - I am an equipment nerd that's how I found your channel - Also you play very good with a nice feel and touch on the guitar. I am using a Carvin Legacy 3 head and Legacy 2x12 (vintage 30's) cab in Stereo with a recently purchased Line 6 DT50 212 / Bogner combo. Sounding really nice - Will continue watching keep on rockin Bro

🤘That's a lot of gain. Find someone who looks at you in the way Brad looks at a heavily overdriven custom guitar amp.

Some of that doesn't look safe. Beautiful Paul Reed Smith ❤ The Amplifier sounds Awesome and quite quiet and Juicey TONEAGE. Great Job Brad

This is another one I'll be watching multiple times. Really like this one!

Holy crap! I bet that customer was very happy with that tone! Great job!

Always interesting to see how other techs approach a problem such as no output (this isn’t a criticism of you at all, just an observation of how we all do things differently). Your approach of the signal trace is one that I had not done before, but will do in the future as I’m sure it will help me at some point. I on the other hand always do things from the output working back, checking plate volts and lack of volts on the grids starting from output tubes working back toward V1, and use the audible “pop” as my leads hit the grids as my indicator that the stage is working. But there has been a time or 2 with PCB faults where my method had me scratching my head, but if I had used the signal trace like you did it would have saved me time (just as I’m sure if you used my method it could have saved you time at one point or another). In any case, always enjoy your videos as I always seem to learn something new (not always an easy task for someone my age! Lol). . P.s. Friends don’t let other friends ever use 220k plate resistors! Lol

Anybody try to blow the smoke away when he's soldering something?

@guitarreman

4 жыл бұрын

I watched twice just do I could time it and freak out my granddaughter.

@jodichristensen9536

3 жыл бұрын

Indeed, I think that every time I watch Brads video’s...I personally run a ducted squirrel fan to pull off those poisonous leaded solder, and flux fumes, as I’m soldering up my stained glass projects. Brad is certainly a verifiable wizard with these vintage electronic circuits, but I fear those toxic lead fumes might end up cutting years off his life, and be the death of him?...The stained glass suppliers online, sell various ducted exhaust fans for this exact purpose, and yet certainly, someone of Brad electronic abilities, could very easily scavenge a old fan parts, and acquire a clothes dryer vent hose and cobble together some type of functional anti poison fume apparatus!!!...8)

@seansweeney3532

Жыл бұрын

Lead won't vaporize from the heat of soldering, but flux is bad to inhale.

good shit man. subbed immediately. loved your demo at the end.

Awesome job could watch you for hours learn a lot thank you very much

Very nice. I didn't expect versatility.

I know fuck all about electrical engineering/electronics. I get the raging fear re wiring a plug. I play a little guitar (not particularly well, but I'm learning). For some inexplicable reason I love this channel. I have no clue what half of the stuff you're talking about means, it sounds like the teacher from Peanuts most of the time, but I can't get enough... Thanks for providing hours of weirdly addictive entertainment dude! Matt

@TheGuitologist

6 жыл бұрын

I get this a lot. Maybe I just have one of those voices or something.

Always good stuff! I’ve got an old Stromberg Carlton radio I should send your way for conversion!

That thing produces distortion extremely well. Man you do great work.

Wow killer job, Brad!

every time I watch your videos... at first I wanna pick up my soldering iron... then at the demo part I wanna pick up guitar... :D great videos and great playing.. tnx alot...

Good job Brad!

That’s one sweet ride 👍👍 Nicely done ✅ !!!

You fixed the cold solder joint and then you seemed to be leaning towards just fixing the obvious issues because it sounded good. Then you proceeded to rewire the whole amp! I think you're allergic to "good enough". 👌👍

wow those two knobs i had like 6 of those from a knob hull i got. very cool never seen them anywhere but mine and the one on your video

That thing sounds fantastic! I bet it would sound great with a Tele running into it.

That is massive gain!