The Amp Garage

operator error... double post

From my Moose notes: -- the HTS5200 is NOT the correct liverpool tranny. It is an M6 steel stancor style that was for an experiment that KF wanted to do with hi-fi materials. Maybe it was when he was choosing steel for a clean amp like the Rocket, or something else, but it's nothing like what ended...

I've done lots of Rockets and Express builds but only a few Liverpool's so my info on them is fairly limited... what I do know is below. In the early days when the Trainwreck forum was really focused on cloning Wreck amps, the veteran builders promoted the idea that the 6.6K tap was standard for an ...

... and live it's just not loud enough to compete with a band. Rock or blues would be fine however, which I suppose is it's intended purpose :D M I suppose it's all relative to what kind of band you are talking about. I've found the Express to be painfully loud when played through a 4x12 cabinet (o...

Similar idea to this one... There is a guy at my church that has the amp his dad built for him way back in the 60's. It is a DIY Super Reverb Preamp into a Dynaco HiFi power amp. Both the preamp box and the Dynaco box are mounted into the same cabinet. The Dynaco looks to be entirely original and ov...

Cool idea Mark - I've used a lot of those MeanWell DC supplies and they are really handy... The Altec takes me down a little memory lane journey from back when I was in college. Our PA amp was an Altec with a built in 6 channel mixer along with a couple of the "Voice of the Theater" cabs. We didn't ...

I fixed it. http://images.mentalfloss.com/sites/default/files/w_17.png I added NFB to my Rocket. (Yes, I know I may lose my membership over this.) This sorted the hum nicely. Hmmm... as I scratch my head??? Maybe one of the guru's can help us understand but in the meantime that might be incredibly ...

Been there, done that, I have smelled the incense and seen the smoke signals indicating that center taps do not play well with FWBR power supplies. I did not have any additional diodes to create the 1/4 voltage option so I took half of my secondary straight to ground. ... in this case I can testify ...

Thanks for that rj... You didn't report any trouble with squealing so I assume I may have something wrong with my iteration. If the values match it may be a proximity related issue. On to the chopsticks as xtian mentioned before. Tony, nope, no squealing on this unit. This is one of the quietest am...

I updated the schematic and layout to match the as built version... those are posted on page 1.

RJ, how ever did you do the front panel lettering? It looks like a dremel with the ball, except it's too clean and even. Some kind of template? I know if i tried it i would be making another front panel and looking for my dymo labeler. Good job! This was done with a laser. In this case the wood is ...

That looks great Bob. So 200R is enough to bias those KT66's? Nope... finally looked at voltages and calculated the current yesterday and those dudes were looking at early extinction for sure. I knew I was pushing them hard but I sorta forgot about using a higher voltage PT than my Rockster builds ...

So finally, I got my money although the buyer eventually had to have American Express battle with PAYPAL to just cancel the payment and I got a check directly from him for the amount robbed from my account. So in PAYPAL's perspective it was indeed an unauthorized charge. I guess I finally raised eno...

I found that if I dialed down the OD to zero and the Normal channel to zero, I had no pop. After I did some more studying, it occurred to me that I needed to tie these two nodes together with some sort of high resistance bleed resistor. I chose a 1 Meg resistor and Viola, that did it. It did not wor...

I went forward with the addition of another relay to allow me to directly switch the full signal from the first gain stage into the OD section. I can dial down the signal with the trimmer pot before it enters the the 2nd tube and it works extremely well... except for one thing. I get a huge "pop" wh...