Build a 6SN7 Triode tube Guitar Class A amp can it be done Solution Unique D-Lab design cool!
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- Опубліковано 7 вер 2024
- Over the years I have read on many forums "Can anyone show me how to build a low power guitar amp using 6SN7 tubes?" Usually the responses are vague and inaccurate. So, I decided to take on the challenge, keep the cost low, make it utilizing common output and power transformers. I believe this is it! This design is solid, sounds sweet, great for recording. Yes, I'm sure there are things that could improved on, however the basic concept works. Think of the thousands of 6SN7 tubes available for cheap vrs the cost of a popular 6V6. Here is the info you seek. e-mail me if you want the schematic.
I see that there is a need for experimental one off designs. D-Lab electronics accepts the challenge and will continue to produce results!
I have built this amplifier 24 years ago, and it still is one of my favorite guitar amplifier heads. I have done pp, se, and pse amps using these tubes. It is an old concept, but a good one! 73 my friend
Hello Terry, to tell you the movie,” When Worlds Collide”, showing 2 Halicrafters S40A receivers using it as a transceiver. I been watching your wonderful videos for years now. A very brilliant man you are. 73’s
Bet it would be fun to try building a low power table speaker hi-fi amp or else headphone amp with 6SN7s as output tubes!
Class A is great. Class A parallel, even better. I really like this one. A unique concept for the output. Kudos.
I wish I still had the tubes I used to have when I was a teenager (1970's). My brother and I got almost all our parts by stripping old junked TV's. I remember being disappointed often when I pulled a tube from a chassis and saw that yes, it was one more 6SN7! At least I saved a few power transformers.
ANY way that Tony plays through that amp, sounds great!
Thanks letting T. shine some more. Right on, Tony!
Terry, that was so much fun:)
Bless you for sharing your wisdom with us!!!
You make guitar amp building affordable for most of the world now!!!
You are preserving tube guitar history for the next generation and at the same time you're planting seeds in the minds of young people to follow the their electronics dreams that are possible!!!
Thank you for supporting my efforts
Always finding a different way to make awesome sounding tube amps Terry . This one does not disappoint at all.
Simple and yet powerful for 3 Watts.
Yes Sir, it was a fun project. More projects than time here
oh boy, here goes another build for the bench. I'll be emailing you as well.
Ive got tons of free tv tubes...would be dope to utilize something of that nature for a guitar amp.
Great little amp and I can see what Tony meant by gain... your new tube really shook it down well and it sounds good. Great work as usual brother !!
Awesome, I love it. I guess it will be #3 for me after my current project. It sounds like it has great tone and I have a couple old black cable boxes with mesh sides and tops that would look fantastic with the hardware hanging out of the top.
Heavy Duty Rock and Roll!
I guess I would like to know where you are getting 6sn7s for 50 cents a piece. I use them in my audio amp builds and the best source I have is $12.00 NOS. If you look on ebay, the prices for new tubes are in the $25-$55 range. Amazon: the cheapest I found was EH at $36
Agreed. 6SN7s from Tubesandmore are $18....... Maybe from Hamfests?
Yes, I would not buy them new, there are plenty on the used & NOS market
Thanks Terry. These designs are unique and sound great !
6AQ5 and 6K6 tubes are another cheap way to go.
I actually built an amp with 6AV6’s and 6AQ5’s with a huge stash of NOS 7 pin sockets I found at a surplus store. The 20 tubes I bought cost more to ship(only used 8). That thing screamed!
Sounds great! 👍
That thing could be modified quite easily to be a nice standalone spring reverb unit as well. Only a spring reverb tank and an extra double triode added as reverb recovery circuit + some extra wiring.
Personally I would put a cathode bypass cap across the 1.5K resistor of that second 6AV6 tube to get a little more gain after the tone stack. Get a more guitar friendly sound. I do like the idea of running power tubes in parallel and class A. If I recall, Allesandro made 20 watt tube amps using four 6V6 power tubes in parallel for a similar effect.
I think this amp matches your brother's style. Well played and well done.
One of the first amps I built was 2 6v6 in parallel was a good amp. Well done Terry!
That thing sounds incredible.
Cool idea. I see you fused the neutral despite showing the proper approach on the schematic. I won’t tell anyone.
Thanks for posting these videos. Your presentation is easy to follow. Very excited to try building my own tube amp.
i love these mr d lab keep em coming
Hey Terry, another great little idea..😁 I'd love to build one of those now after following all you tech guys, and leaning so much from you and your channel...Trouble is, Power transformers cost a leg and an arm..! Nice project though..Ed..UK..😁
These uploads are awesome sir
Back before the introduction of the miniature 7 and 9 pin tubes, The 6SN7 was a very common dual triode. Commonly used as audio preamp or oscillator tubes. It was basically the predecessor to the 12A*7 series.
The 6SN7 is a pair of 6J5 tubes in one envelope.
Why didn't you use 6SN7s for the preamp stage, as well. A six tube amp with ALL 6SN7s.
Now that would be cool ......
Great great and Nice job. Congratulations from Brazil.
I did this with 2x ecc81 for 4 triodes in paralell SE, it worked well with a primary around 5k-6.4k.
Yea that's the problem the output trannie, most triodes want like 17k or more this is a good idea to put them in parallel to reduce primary impedance needs. Makes me want to do some experimental tubing.
T, what if you build a re-amp box and just played back some DI guitar tracks into the amps? That way you wouldn’t be beholden to having Tony over or trying to nail that G chord. Just a thought! I’m sure many viewers would happily provide DI tracks :)
D-Lab 2023!
sounds great, like to put my ADA MP1 in front of that one...
Nothing like a little Stray Cats to test an amp! :-)
Great stuff!
Sounds great
Hmm interesting, I wonder what the spectral trace would be, with parallel link up like that, one would think you might get all sort of odd things.
Good evening 🌆🌻 sir...
Warm greetings from my humble country the Philippines 🇵🇭.
I am not a technician but I love this video of using 6sn7 output tubes. 3 in parallel per channel. I don't even play any musical instrument. Can I use this to play my line output level equipment like a CD player or any equipment like a tuner? Thank you and best of luck to you.
A nice sounding amp.
So there needs to be a section of the Rock Hall of Fame that celebrates the engineers and techs that provided the amps, and kept them working that, the famous guitar players used to get their Hall of Fame sound...
The Masco is likely from the 50's or early 60's.
Well done 👏
Nice amp build! 👍🙂 By the way, could you please explain what is meant by "chime" (9:00) ? Thanks!
Cool little amp but seems like a waste of sockets and 6sn7’s especially when I get new Russian 6p3s’s (6L6GB) for $25 a quad. 1 socket + 1 6p3s would be cheaper than 3 sockets + 3 6sn7s. But I do like that cranked triode sound Tony is getting. Also for R&R guitar amps,… I think some sort of PRE & POST volume knobs are a must have.
hello like your work im new and just want 2 ask u on marshall jcm 800 100w 2203 1985 with no bias point and on pin 5 gives me 444v. if i put on the 1-8pin the resistor that you put on the one video where you put that resistor, can i get the bias for el34 that i just swapt. im one of does that i try doing it my self. thanks for your help
Hey Tony tell us what you think of the amp not showing your playing heha
Need a good source for transformers and buy your “magic” boards.. I’d love to build a pair of 6V6’s
Hey. I lived your work, thanks for sharing your knowledge!
Do you think it would be easy to build an acoustic oriented tube amp? Something that can carry the higher frequencies and also drive a tweeter? Think Rivera Sedona type amp... I wouldn't know what the parts or circuit requirements would be, I'm just curious. Thanks for your time!
Is there a parts list with the schematic? Sounds great, can't wait to build this. Thanks
Have you ever heard of a Masco PA amp MA-12EX? I have one that we attempted to modify into a low watt guitar amp but we never really solved the issue. Was wondering if maybe changing out all the guts and converting it into a Princeton style guitar amp might be doable.
The ENIAC computer of 1945 had 16,000 6SN7 for 18,000 tubes in total.
Awesome!
Hey Terry, good video. What kind of watts are you getting out of this jewel? TY
Hi, I want to build a 5F1 amp, and shopping at the swap meet, I found a chasis with a transformer and two 5Y3 tubes. I only need one of the tubes for that amp. Do you think the transformer is the right one? I’m just learning about tube amps. Thanks!
nice
When you send a test signal using a test tone generator (whether I'm trouble shooting an amp or a guitar pedal that have hi-z inputs) do I need to add a resistor or transformer or something in line with the test signal test lead before it hits the device's input, or doesn't that really matter?
Nope, just use a signal generator that has an output attenuator. You only want to output 150-200mv
Cool Man !
I would like a schematic
Could you do the same thing with 12sn7 tubes?
Can this also be done with the 6gc7? I saw a video where a guy built a 6gc7 6v6 amp but no data.
Cool little amp! How many watts does it have? Do you have a parts list, and could you configure it with a tremolo circuit?
This is a 3 watt model. Yes, Tremolo could be added, but at this point, I have wrapped up this project
I'd love to know where to get 50 cent 6sn7's.
Hey Terry,
is the gossip about tube shortage real?
Will it affect repair people?
Hi Terry, are you still working for Mojo Tone?
I was simply assisting them with troubleshooting, not an employee
How many 1 meg grid leaks did you use on the output tubes?
1 on each tube
👍👏😊
👍😄
Where are you getting 6sn7 for 50 cents? I have seen them range $8 to $150
Swap meets and lots on ebay
Hey Terry, fuse on neutral always weirds me out for some reason. Any merit to the concern?
Yes. Much merit.
@@BradsGuitarGarage Should be on the LIVE!!!!
@@petercornell2002 Absolutely. I have no idea why people continue to get this wrong and willfully ignore it. It's just as easy to do it right.
Yep, even Fender had it wrong on every vintage amp they built, Take a look at their layout diagrams.
Where are you sourcing those $1 tubes?
Ham swap meets & ebay
I bet Terry has a cousin in the Ukraine with a key to a warehouse full of 6SN7's
Where the hell are you finding 6SN7 for $0.50. That is an outright lie.
Terry, I cant seem to find your email address anyplace on here. I'm interested in one of those D-Lab cap boards. If you could drop your email address here I would greatly appreciate it. Love your videos!
I would like a schematic please will email you