Home Made 1960's AA764 Fender Vibro-Champ
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- Опубліковано 12 вер 2024
- This video features my homemade ca. 1960's Fender Vibro-Champ, using the AA764 schematic with upgrades from the AB764 schematic. Included is a detailed analysis of the cabinet, chassis, circuit, and overall construction features. Hints and suggestions for scratch building amplifiers are provided, and the amp is played with and without the tremolo effect. I was not thrilled with the somewhat muffled tone from the speaker used in the video, and subsequently replaced it with a nice vintage Jensen C12Q that provided a huge improvement in clarity and frequency response.
If you enjoy videos featuring classic vintage amps and clones, please subscribe to see all of my vintage amp and jukebox videos. In addition, you will be notified each time a new video is released. Thanks for watching !!!!
Your channel is a treasure trove of knowledge, Doug. I have been digging in your content for almost a year, and have never hit the bottom of the pile yet. Thanks so much for all your hard work.
You're welcome, DM. Thanks !!
Thanks so much, Twangzilla. I really appreciate your very kind words. Please note that I have many other videos showing similar home-made and restored vintage devices that you may find interesting.
Crickey Doug.....I know I keep saying it, but another wonderful amp........These are just awesome and show the standard and old world skill we just don't see anymore......things like this have become so mass produced looking and slapped together these days.
I am not a guitarist sadly, but these amps of yours make me want to be one !! .........sorry for saying this every time I watch one of your video's but I really take my hat of to both you and david for keeping the skill and craftsmanship of this going..........its the one great thing about UA-cam.....we get to see this stuff........cheers again.
Thanks so much for your very nice comments, Harb :)
Another great creation. Thank you.
Glad you liked it, 49V.
Thanks, Mr. D. I'm glad you enjoyed it.
Thanks, Henry. I'm glad you like it.
I just did.....and am very impressed, both by your building skills and your guitar playing. Excellent !!!
That control panel is great looking . I would like to see a video on just doing a detailed video on each part like just a video on making the control panel etc.
I have posted a video on how to use a laser printer to create labels. You can also use rub-on letters.
By coincidence, I recently ordered and received an (Italian) Jensen C10R for my Fender Princeton 5F2-A amp. I love it. Even compared to the vintage Jensen's I have in my other amps, it sounds great....and didn't require a lot of break-in time to get that way. My favorite source for speakers is Musician's Friend.....free shipping.....ultra-fast delivery.....lowest prices I've seen. I recommend them.
Thanks for sharing. These amp build video's are a great source of information. I am getting a lot out of your schematics reviews along with the design modification history. Your boxes are very well thought out and I enjoy the various tweaks you make from build to build. Thanks again.
Continental Divide Vibe You're welcome, CD. I'm glad the videos are helpful. Thanks so much for watching....and posting a favorable comment :)
Looks and sounds great! I've built a few amps, but mostly pedals. I have NO woodworking skills, so I'm really in awe of your work, from start to finish. SUPERB!
Fantastic information on a circuit I have recently become obsessed with. Thanks!
Great to hear, Charles. You're welcome.
Nice one Doug, catching up with some of your earlier videos...Hope your keeping well..Ed..uk..😀 ( still learning )
Never better, Ed. Thanks !!
very good job, and very good explanation, thank you. Greetings from Argentina
Thanks so much, Fabian.
I'm scrounging my parts bins for materials to do one of these right now. Excellent video.
Thanks, Dr. S. Good luck with your parts scrounging. Let us know how the project turns out.
Great Job and amazing enclosure and taste! Thanks Uncle Doug
Glad you liked it, Fred. Thanks !!
Nice design with that retro look. Nice point to point wiring. The grille cloth seems to fit for the period, but the
highs might be attenuated slightly as if the speaker was placed behind a heavy curtain.
Cathode bias tremelo, simple but effective.
A+ for wiring neatness and internal wiring documentation.
Beautiful aesthetics. Meticulously constructed. Congratulations!
Thanks, VR :)
You're the best Uncle Doug! I'm planing to build one of these, but as a Head. I'll also add a master volume and a switch to turn off the negative feedback. Wish me luck and keep going with this channel!
Thanks, Miguel. That sounds like a great project. Please let us know how it turns out :)
Great Job! Love the grill cloth.
Joseph Van Yush Thanks, Joseph. Glad you like it :)
Nice work.
Thanks, Amo.
You're all class Uncle!
You are very kind to say so, Vinny. Thanks.
clean looking amp, I have a 68 just put a Jensen vintage speaker sounds great.
Thanks, Gregg.
Just Beautiful, very informative, thank you for Posting!
Thanks, Chance. I'm glad you liked it :)
Just a beautiful job!
Thanks, Marcelo :)
Very Nice!
Thanks, KC :)
Thanks for sharing! this information is very usefull
You're welcome, Juan. I'm glad the video was helpful.
Are you familiar with Garnet amps out of Canada from the 60's-80's? I have recently acquired on of the "Stencil" models, the d15tr. This is what eventually led me to your videos. I am so appreciative for them. I have also got the book/ schematic listings of the late Gar Gillies owner of Garnet. He was the maker of the "Herzog" which gave The Guess Who the sound of "American Woman". Fascinating read and with what I have learned from your videos I can understand and appreciate so much more. Thanks for that. A tip of the hat to Rusty and Jack also.
+Nick Montcalm Yes, I am familiar with the Garnet name, but only through Canadian viewers who have told me about them. I'll check into the "Herzog", since American Woman was one of my favorites back in the day. Rusty, Jack, and I are glad the videos are helpful. Thanks for watching :)
Beautiful work!
Hey Uncle Doug,
I'm rewatching all of your videos one more time and I'm fallig in love with all those vintage amps even more hehe. And my pile (or collection) of various tubes in home is growing but not turning into any amp yet...
Anyway I salute you and Rusty :)
Btw I finally opened my weird Tusq cabinet and found two original Jensen 10 inch speakers and two 12 inch witch are really misterious. Maybe later I post a photo in my little thread on your discussion section of your channel and maybe we could discover what brand they are :)
Greetings, Nusior. It's great to hear from you. Re the mysterious 12" speakers, can you find any numbers printed on the basket rim? As you probably know, virtually all speakers can be identified and their date of manufacture can be determined by this number code. For instance: 220 is Jensen, 328 is Utah, 285 is Rola, etc.
Uncle Doug No, there's nothing on them but "Made in England" embossing. I'm not familiar with the shape of them either. Here's photo:
docs.google.com/file/d/0B16LIiIaNEylZWJUaXE1b29oNzl4SjFUTnNHUTNzOWloVXFN/edit?pli=1
and Jensen:
docs.google.com/file/d/0B16LIiIaNEylY3Z5QXl3dWh0Q0ZiYlRoOXJFU1JsU0JNQUFr/edit?pli=1
I'm not sure about the date. How can You tell if it's 45th week of '53 or '63?
Cheers
Nusior, I found an Ebay ad for identical Jensen speakers that came in a Heathkit AS-10 speaker.....which was probably used for a HiFi or stereo: www.ebay.com/itm/Heathkit-AS-10-Drivers-TWO-Jensen-Special-Design-Vintage-8-Woofers-220201-/151391997433?pt=Vintage_Electronics_R2&hash=item233faa8df9
Re how to tell if it's '53 or '63, you have to go with whichever date agrees with the speaker's apparent vintage. In this case, definitely the later date.
Re the other, unmarked speaker(s). It appears to have a cast aluminum basket, which seems relatively modern to me. With the square magnet and "Made in England" it may well be a Celestion, from the '80's or 90's.....but I am just guessing.
Uncle Doug
Thanks for the input and useful tip about Celestion trace. I'll keep searching. For now I return to your videos :) And btw I'm getting closer to my not identical-copy of a Champ with some equivalent soviet tubes: cheaply bought 6N2P for preamp and 6P6S for output tube. Just find some rectifier and I'm ready to go :)
You're welcome, Nusior. Good luck with your modified Champ project.
I think I'm going to try one of these, point to point wired. That would be a first for me.
Hi, nice build.
I think your explanation of the input and how I think it works are different though. Take a look at it again and think of the voltage divider circuits that get created when plugging into either jack 1 or jack 2 and look at how that 1 Meg resistor comes into play in setting up both the input impedance and the triode.
As I understand it:
When you plug into input 1 your input impedance is 1 Meg. The 68ks in parallel form 34k which limits current to the grid (NOT a problem), eliminates parasitic oscillation in the tube and unwanted radio broadcasts (always a problem). This gives you a high Z input that, for all intents and purposes, sends 100% of the source voltage to the first triode.
When you plug into input 2, two things happen. Because the switch on input 1 remains closed, the 1M resistor is bypassed. The signal from the source sees 136k input impedance. This will alter how most pickups sound. The two 68k resistors are in series from the signal to ground and act as the voltage divider, sending 1/2 of the signal to the triode and 1/2 to ground making it a -3 db input.
en.wikipedia.org/wiki/Voltage_divider
Greetings, PH. I see your point and agree with your analysis. My narrative was addressing the resistance between the input and grid rather than between the input and ground, which has a more significant effect. Thanks for your input.
im gonna build one of these
That's a great idea, Gary. Let us know how it turns out.
Great looking and sounding amp. Cool clock too, looks like an antique?
Thanks, Davo. No, I made the clock out of junk parts, including an old fruitcake tin and some Masonite :)
Awesome. You've got great taste. Im trying to find a Q12R like the one you put in this amp for my 5e3. I tried an organ pull alnico, but it was quite dark, which this amp already is. I do like its open sound though.
I wonder if the suspension of the Alnico was weak. Check out my speaker repair video......maybe it could be improved.
Will do Im thinking of trying your "dope" technique.
Give it a try. If the speaker is not usable as it is, you have nothing to lose.
very nice vid,thx for posting
Thank you. This is very helpful. Question… Could you remove the tremelo completely… then use the 2nd 12ax7 as another gain stage?
A little late to the party, but nevertheless...Beautiful work!
It's never too late for kind words, Douwe. Thanks !!
Fabulous!
Thanks, Joseph :)
Doug -- again, your attention to detail and care put into your craft is top-shelf. I have a question about the inside-mounted grill cloth. In your scratch-built 5F1 video series, you use lath to set off the cloth from the front of the speaker baffle. Is the frame in front a decorative piece set over the "real" baffle that's recessed beneath (and constructed as in the Champ video series)?
Jason Thorpe Thanks, Jason. Yes, the decorative frame is set over the grill cloth and baffle, but the grill cloth is attached directly to the baffle, not spaced away from it as it was in the Champ video. It would have been quite possible to space it away, but in this particular case, I didn't.
A very excellent job on the Vibro Champ build Uncle Doug! I learned a lot, example how the Input Jacks operate & the 4 or 8 Ohm Output Transformer circuits ect. Thank You.
I am making a parts list to fabricate one of these into an Amp Head. The steel cabinet I am using, used to be a vintage Automotive Coil, Condenser Tester that was missing parts. I have stripped the remaining unusable parts out & altered the chassis to accommodate all necessary parts. I was looking at the schematic & see the Tremolo has no "On Off" switch? Is it possible the Intensity simply just fades it out with the Intensity control turned all one way?
Yes, the intensity control can effectively turn off the effect, but it is still present in the background if you monitor the plate current within the output tube. I honestly think a piggyback on off switch on the intensity control, properly wired, would be a good addition, allowing for a full shutoff.
@@UncleDoug Thank you Uncle Doug & I think that will be the direction I go with the piggyback switch. I have a Canadian Regal Model 500 with that style of tremolo "on Off" switch. Thanks again Uncle Doug for your helpful tip as I really Appreciate that. Kevin.
bonus~
We're gonna make the band play one more song, and get in the groove if it takes all night long...
Meanwhile, let the good times roll......
dear uncle doug can this amp play a 4ohm & 8 ohm at the same time. i love all your videos
+George Aleong Thanks, George. No, it can only play one type of speaker at a time.
Hello again Uncle Doug. I was making my parts list to build my Fender Vibro - Champ to find the resisters I have been using in the past have a 350 working Volt & 600 Volt Over Load , 2 Watt Metal Oxide. I see some of the Circuits in the Champ run as high as 420 volts. Would this be an issue? I will paste the Data sheet from Antique Electronic Supply. Thank You Uncle Doug. Sincere Kevin Clark.
Metal Oxide resistors are for applications where stability under high temperature conditions is required. Sold in multiples of 5.
2 watt
±5% tolerance
-55° C to 240° C operating range (derated over 70° C)
350 V working, 600 V overload
Excellent flame retardant coating
Stable performance in diverse conditions
High purity ceramic core
EIA color coded
.47" long x.20" diameter
This is strange, Kevin, since the data sheet I looked at shows 500V working and 1000V peak for 2W MF resistors. I routinely use 1W resistors in my repairs and builds, with absolutely no problems at all.
@@UncleDoug Thanks again Uncle Doug for your Information on Resisters. Looks like i am safe to go with the Metal Oxide 1 Watt or 2 Watt. Take care & will keep watching your videos.
It's only a 3 1/2 year old video but! What did fender do on their production models for that 6V transformer winding if they didn't add a resistance ground? The schem here shows a grounded winding, which I could see getting noise in it. Are you just changing the impedance on that line?
The schematic shows no 6VAC center tap and no "virtual" center tap, so I guess they just expected the owner to tolerate a little hum (it's not inevitable, but likely). To save wire and labor, they grounded one of the 6VAC leads and ran the other to one side of each tube filament, then grounded the other side of the filament.....which completed the filament circuit, but again, not a good idea. This was probably done to reduce building time and cost.
Uncle Doug when they didn't ground power cords.. yeah! But if you ground the primary side of that xfmr on the cord and the secondary in the chassis.. should provide ISO. Looks like I have to build one and find out lol
Electricity always returns to its immediate source, which in this case is the secondary 6VAC winding of the power transformer. It had no affinity to the chassis ground, which affects only the primary circuit. Circuits using the chassis as half of the filament wiring work OK with a grounded chassis. Try it and see :)
I have a '73 champ and when I opened it up I found that really odd cause it's pretty quiet for such a primitive design. Mine is all original inside with the death cap still in place. The outside is a different story.
Uncle Doug, is there a simple easy way to fix a torn speaker (the coil is fine)? I have a 12 in Fender speaker from a Rhodes cabinet that has a tear in the cone.
Yes, indeed. Watch my video on how to repair speakers, Dennis.
Hello Doug! Very nice looking and sounding build! I'm about to do my first scratch build of a Champ AA764 without the tremolo circuit. I'm done with kits is all I can say.
A noob question for you; Can I use 1w resistors instead of 1/2w for this project? 1w and 2w resistors is all I've got my hands on for the moment, I'm figuring 1w will hold up better over time anyway. Here in Scandinavia it seems hard to find anything between 1/4w and 1w.
For the schematics 1w 1k and 10k resistors I'll go with 2w (maybe 3w for the 470ohm bias resistor or is that overkill?)
Thanks for making these videos, I'm learning a hell of a lot from you!
/Niels
You're welcome, Niels. Yes, you can use higher wattage resistors in your build. I always use a minimum of 1W in my scratch builds for a couple of reasons: 1.) They look old fashioned, bigger and better :) 2.) They will last longer. 3.) The extra cost is negligible. I also agree that a 2W or 3W resistor is better in the bias position.
Thanks for the fast reply Uncle Doug :)
I'm guessing they went with 1/2w for two reasons;
1. they were cheaper than 1w
2. those Allen Bradley carbon comps 1/2w are half the size of the 1w, so smaller the better especially in those early small chassis like 5F1.
Any brand you prefer?
No prob. Search twangzilla on UA-cam, and you'll see some if my builds.
great lookin amp. i was wondering if you sell any of your custom "dani sonic" amps. they all look and sound great.
Yes, I have sold several, Zeke. Let me know if a particular one catches your eye.
definitely will do! that "mighty mouse" bassman is probably my favorite of what i've seen of yours, but i'm thinking it's gonna be out of my price range for the time being.
It was sold about a year ago, Zeke. The prices for my "creations" ranges from around $850 to $2000, which covers materials and about $1 per hour for labor :)
Fender just released a new model of the vibro champ, the 68 custom vibro champ, what do you think of it?
I have not seen or heard one, Henrique. We tend to deal only with vintage tube circuits.
I am building this project myself! Thank you for this. I notice the Jensen c12q is a 8 Ohm speaker but the AB764 schematic mentions a 3.2 ohm speaker. Was there a modification to use this?
Greetings, Rimian. I happened to have a really nice, original 8 ohm Jensen speaker for this amp, so I ordered an output transformer with both 4 and 8 ohm output capability.
Beautiful amplifier Doug. I have a new set of transformers ( Classictone 40-18019 PT and 40-18031 OT) and a donor chassis that has 4 octal tube sockets. I would love to build the Vibro Champ AA764 with these parts. But I was hoping to accomplish the task without changing the tube sockets.
Is it possible to use 6SN7 tubes (or other 6**7 variants) instead of 12ax7's for the pre-amp section and for the tremolo circuit?
Pros-cons?
Thank you
Thanks, Ted. Yes, you can use octal duo triodes in place of 12AX7's......generally with excellent results. This is the way the early amps were built and they sounded great !!
Hey Doug... great video.
Would this make a good first amp? I have decades of experience building electronics, but all small, low powered stuff, and lately a lot of digital circuits & SMD. I have built a couple of valve things using low voltage valves, but no HT stuff.
The schematic looks pretty simple but I get that the devil is in the details.
This was one of my early scratch-builds, Gerry, and it was a wonderful learning experience. I think you would really enjoy building one.
@@UncleDoug thanks for the encouragement! I will try. The wealth of information you make available certainly gives me confidence.
@@gerrykavanagh Best of luck with your project, Gerry.
I really like the looks of that grille cutout. Is the black frame in front of the grillcloth cut from just a piece of wood? I'd be afraid to break one of the little spindly parts even if just while I were doing the upholstering. I'm curious what you may have done to avoid breaking it. Plywood construction? Fiberglass reinforcements? Maybe I'm overthinking it a bit.
+Joel Thomas Thanks, Joel. It is simply a decorative grill that I cut out of 1/2" thick plywood, then routered to round the edges. It is quite strong....breaking it was not a concern.
I thought it might be plywood since it has layers with grain in both directions- probably making it the best choice of wood. With solid wood, only one direction of grain unless it is super hard, the grain can tend to be a weak point.
Yes, the laminations make even thin plywood quite strong.
Hi Doug; in the trem valve, how come the second half grid can see the high voltage output of the first half? Thought this was a no no. Regards, Martin
You've made an interesting observation, Martin. The rule you cite pertains to amplification tubes, but the second half of the 12AX7 in the tremolo circuit is a cathode follower and obeys a different set of rules. If you notice, besides the direct connection of its grid to the preceding tube's plate, the output of the tube is from its cathode, not its plate. Here is a full explanation that may (or may not) make sense: www.valvewizard.co.uk/dccf.html
Wonderful amp! But where did you mount the filter caps?
They are on the outside rear of the chassis, just like in the larger Fender amps.
@@UncleDoug thankyou Uncle Doug! Really enjoy your meticulous craftsmanship and artfull designs!
those wires are grounded now from the transformer the taps not being used . as for what they are lable maker and clear heat shrink . I didn't see what u mounted the plate to if just to wood ok but just another peice that can add interference noise homemade antenna . just a guess your work is awsome btw
Thanks, Andrew :)
Rather than maybe trying to bend over a small edge maybe you could make it longer and cut it down to size, or maybe make a bending jig?
That's too easy, P. You have to be willing to suffer for your art :)
Hi Uncle Doug,I couldn't see the filter the caps on your video.I guess you installed them behind the chassis next to the power transformer.What are the dimensions of this amplifier?
+lucancherby Yes, the filter caps are mounted on the rear of the chassis in a metal can, as they are in the Fender Bassman. The cabinet measures 15.5" tall x 9" front to back x 16" wide.
Hi Uncle Doug!
I've recently finished a 5f1 build. Is it possible to add the tremolo circuit without the bass and treble circuit? Do you have a video showing this? Thanks
Yes, but you'll have to add an oscillator tube. Can your power transformer handle it ?? No, because I don't advocate adding tremolo or reverb to existing circuits. It would be better to simply build a Vibro-Champ.
@@UncleDoug Im pretty sure the transformer would handle it (would of course verify first). I built this amp like a SF version and have plenty of room in the chassis for another 12ax7. The tube plus other components total about $60 so Im not sure its worth it. Thanks for your advice and I love your videos.
Only you can decide if it's worth it, RS. Good luck with the project if you do.
@@UncleDoug good morning.
Would it be possible to email you to ask a few questions about this project? I have questions about the difference in NFB loop and the junction of resistors/capicitor where the vibro circuit meets the cathode of 12ax7 preamp.
Rather than me guessing about the circuit changes, it would be better for you to simply try them out and see if they work for you.
what do you think about current production italian made jensen cermarmic speakers? i use one for my silvertone 1483 as my main amp and its starting to really become nice
Hi Doug, Im about to build a AB764 vibe champ. An issue I phase is the I don't get the 25k-RA pot for the vibrato. What is available is a 50k-RA. Do you think this would be an issue or is it only that I'll get an higher intensity?
Murrat Osmani Greetings, Murrat. If you can't get the 25K-RA pot, then the 50K-RA pot would probably work just fine. The Intensity may be a little greater, but more likely, it will plateau around 25K with little or no increase past that point. Either way, you'll have a good, working tremolo.
Uncle Doug Great, thanks for the fast reply!
Coming along with my build. I used 450 volt Nichicon filter caps. Open-circuit voltage (with only the rectifier plugged in) gives me 480 volts at the first filter! (Classic Tone power xfmr.) Is that normal?
Thanks for your great videos!
+Chaka Wolf You really can't get reliable B+ readings without all the tubes in place. Unless current is flowing, the socket (or cap) voltages are generally high. Use a Current Limiter at first, just to protect the circuit.
UD it's me again, your favorite question pest, I couldn't help notice how much tolex and vinyl recovering you do ,and I know your a bizz-e person but if you could find time to direct me on the right direction on a very elusive search ? I'am on the hunt for marshall style elephant grain (fawn) color tolex , I have a 1977 - 4-12" marshall cab model 1960 that has this style tolex , on the back panel there is damage from where my cheewawa of 15 years god bless his soul, found a little ripped part and commenced to tug on it and ripped it clean across the length of the cab, needless to say I have not had any luck finding this style in a elephant grain fawn color any where, have any pointers to guide me in the right direction ? I know this is off the beating path of your video so forgive me in my interruption, I didn't know any other way to contact you
I have never bought or used the type of material you are asking about, but Antique Electronic Supply may have something very close. Also, check your local upholstery shops and the shops that supply them. Good luck.
@@UncleDoug Thanks for the get back on the tolex and my search goes on, by the way found two vintage Rauland Borg pa cabs both loaded with 10" spks both have original labels on spk frame baskets and cabs $20 ea buy it now price + a rauland borg pa amp on same page all listed under consumer electronics>vintage electronics>vintage audio>vintage speakers to -b- honest all I did was looked under musical inst. then typed in empty spk cabs ,I caught your vid on the Borg pa an thought you might -b- interested or the person who had it would -b-
Uncle Doug - what value did you wind up with for the bias resistor? Thanks!
I find that 1K Ohms is generally about right, Chad.
@@UncleDoug Thanks - I was looking to see if maybe you'd gone with an adjustable resistor in this build. This one was fabulous. I really love the tip on anchoring unused wires. I'm stealing that idea fro you for sure!
@@CC-te5zf You're welcome to use any ideas you see in the vids, Chad. I tend to go with fixed resistors for cathode biasing.
can you explain the effects loop?
I want one Uncle Doug Ha! Is it possible to build a tube amp with a battery in it. Not one as big as a car battery but maybe the size of a computer battery. I'm sure the tubes would drain it quickly is probably the problem with that? I like to play outside at different places and not have to rely on finding a receptacle. They aren't always available.
The problem is finding a battery that can provide 350V+. This has always been a problem with battery powered tube circuitry.
So would it take something as big as a car battery to provide 350V?
Car batteries only produce 12V, Michael. You would need a battery with a huge number of individual cells.
Oh, that's right, I see what you mean. Thanks for the answer Uncle Doug. You have a lot of electrical knowledge to be able to fix and build those fine sounding amps. Thanks again!
was the first jenson broke in and if u still have it are u selling it ?
The amp was scratch-built so there was no original speaker, Andrew. I have no vintage 8" Jensen speakers.
I am trying my luck at building one of these but I can't find a source for the 25k reverse audio pot for the intensity control. Does anyone know where to order these? I have tried linear and audio taper with out much luck. Thanks
Have you tried Antique Electronic Supply?
Uncle Doug , yes, I searched their web site with out finding one, I may not be searching correctly. But I found the 3 meg speed control reverse audio pot on their site. I have tried "just-radios", "all-electronics,"allied electronics", " tubes and more" which I believe is part of Antique electronic supply.
Using a linear pot or just an audio taper I get a huge volume control issue, with the intensity and volume control effecting each other more than I would think reasonable. It may be something else causing the problem that I am not aware of. Thanks for any advice or info.
Dang! I thought Naugas were extinct!
They were declared an endangered species and are now enjoying a huge population increase.
Have anyone made a wiring layout for this amp, and would like to share it? What program do you guys recommend for doing wiring layouts?
+Thomas Asp Wiring layouts and schematics are readily available on the Internet for all common Fender amps, Thomas. Simply do a Google search.
Use a No. 2 pencil to draw a schematic, what you call a "wiring layout". Use 18" x 24" vellum paper for a small not too complicated amplifier schematic.
Is it for sale? If so how much do you want for it?
Yes, it's one of the few hand-built amps I still have, Dwight. Message me on my FB page: Uncle Doug's Vintage Amps.
This has nothing to do with the video subject matter which, by the way, is great, but you sound exactly like a guy that hosts a weekend home improvement radio show here in Denver. You aren't him are you?
Greetings, FB. Although I do live in your general area (I'm in West Texas), and am always getting nagged by my wife to do home improvement chores, I've never hosted a radio show. Please keep watching the videos anyway :))) ......and thanks for the nice comment.
Absolutely Brilliant Stuff ... I would love for you to build me a simple plexi design 25 watt amp ... ))) ... in a combo ... ))) like a 65 67 JTM 45 circuit With one EL34 Or 6L6 ... One vintage 30 watt speaker Preferably a celstian 12" ... or even celestians 15" ... Get it to break up a little earlier in the volume then the original 45 ... I'm sure thats possible with a bump up in resister to the 12ax7 ... I wonder what that would run a guy ... ))) ... kind of a compact club amp ... I was thinking I don't need more then 30 watts ... HHHMMM ... I wonder if its possible to get away with 1 EL34 And a couple of 12 ax7"s for a 25 or 30 watt Marshall club amp Design /??? ... I really love the chimes of those marshal's )))
For a fellow with your aspirations, TA, there is only one solution: Study up and start building your own amps. Cutting out the "middle man" will allow you all sorts of creative freedom......and save a ton of money.