The Amp Garage

I believe the Mhartman version of the SSS has the mixer tube that mixes the clean and reverb signals like the JM Signature clone. I wonder if changing this can get you what you want. The #005 SSS does not use that method of mixing the clean with the reverb and it has lots of gain on tap. You can lis...

A part of the compression is coming from the LNFB loops. Especially when you drive the first volume pot a little more. Not all SSS are the same as are the LNFB loops. Which one do you have? Erwin My build is adapted slightly from MHarman's Layout which I believe is based on #004. So I see that I di...

I just completed the tolex job on my first speaker cab. Now I just need to do the speaker grill. I'd like to make it look like the attached image. Does anyone know the name of this type of grill material and where to buy it. Also, what is the white part called? Binding? Hi, here is the grill cloth ...

I like how it sounds when the Phase Inverter and CF plates are around 240v. This was with SSS #005. That's a good point about the Master Volume. I never experimented with that. I will test that out when I have another one finished later in the year. Happy Easter and Happy Holidays! Guy Happy Easter...

I have found that adjusting the voltages on the Phase Inverter and the CF plates can effect the level of compression. Try lowering them and see if it gets you what you want. Cheers G OK, thanks! I was wondering about something like that. What sorts of voltages did you end up settling on? Did you al...

I have found that adjusting the voltages on the Phase Inverter and the CF plates can effect the level of compression.
Try lowering them and see if it gets you what you want.

Cheers
G

And I've found Studio Signature's detailed guts which is supposed to be 35 watt version of the amp(minus rock jazz switch, tonestack bypass and fet). Don't know if it is true or not but this one can probably help too. The mixing tube wiring on this Studio signature looks a little different than the...

No problem, it's all good input! Sounds good, too. Interesting you had success with a 6L6, what with its need for more drive voltage than an EL84 or 6V6. Thanks Martin, its my friend Kyle playing the amp. I would like to turn back the clock to being that young again LOL. I was thinking the same thi...

Excellent! I had forgotten all about that. I have the schematic Colossal drew up, which has some good ideas. Matt drives an EL84 directly, where I'm planning on a 6V6. I want to ditch the preamp out/power amp in, and take a line out from the output transformer. That will be driving either a resisti...

Thanks everyone for all the great info here on this subject. I have grown very found of Single Ended amps lately and have built several ODS style circuits in single ended format, both high plate and low plate and really enjoyed the sound. I was pleasantly surprised! Its interesting how less seems to...

I came across this interesting idea for lowering B+ on a Single Ended amp that has a choke input. It was used by a gentleman named Gordon Rankin in his Cardinal amps. I would use it for guitar amps. DropB.JPG He used a small input cap before a choke, you have to experiment to get the right voltage d...

Last step required to manage gain was to replace both 12AX7s with 12AT7s. Very happy now. Playing thru an EVM12S. Amp can be way too bright—can't turn on bright switch, and Presence is too much. But tone stack controls are really responsive. This demo is recorded with: Treble 3, Mid 3, Bass 5. This...

Great looking chassis Christian! I have been using the LND150 as the first stage in several of my amps and I did not need any extra Cap between the Input Jack and the LND150 to tame any noise. I have been using these LND150 jacks from Granger and they are quiet as a mouse. I order them with a 25K or...

I agree this amp sounds fantastic. Regarding the presence pot and mid switch...maybe a similar arrangement to #093 but with the pot mounted externally rather than a trimmer on the board. srvdumbonetb2.jpg P.s. I am not sure why the filename for this picture, but afaik it has no connection to SRV. -...

Hi everyone, Starting my second build after a Marshall Plexi 18W that came great. I have a Twin Reverb 65 RI chasis with PT and Reverb Transformer. with a late 70's Ultralinear OT that I'm planning to use without the UL taps. The twin comes with an extra 12()7 tube. I was wondering if I should use ...