The Amp Garage

Welcome back! You've been missed.

If the sizable green resistors are running between pin 8 (cathode) and ground, then clip one meter leads onto each side of the 1Ω resistor and read mV. That is the same as your bias current, as explained above. Draining filter caps is not relevant to checking bias. You need to power up the amp to do...

Do what you can to raise the plate voltage. I'm going to guess 275v is the sweet spot. You won't get that with that PT and tube rectifier. You'll get into the 220's by changing the primary to 115v. For a speaker, IIRC, I've got a Celestion G10L-35 in my Gibson Scout. It was a miraculous improvement ...

I'm late to the party, maybe too late. That Epi 50T is very similar to my Gibson Scout GA17-RVT, also PP 6AQ5. The schematic for the GA17-RVT says plate voltage is 300VDC. With today's wall voltage, IIRC, it is more like 315V. This amp has been in storage for about 10 years, so I'm not sure about a ...

I know it sounds like a joke, but I try to remind folks, be careful what you wish for because you might get it. I understand the motivation. Do your best to choose carefully. At our age, I'm concerned another chance might not come along!

A clear case of someone who has too much time on his hands. BTW, IMO it sounds like poo to me.

IMHO, there is nothing about this amp that shouts out for originality. This looks to me like a clear case of substance over form. Skip the expensive can caps. If you insist on using can caps, JJ makes a 500V 40-20-20-20 for around $20. Leave on 20uf unused and find a 40uf radial cap that works in th...

Anything you do about the rust will involve risk. I wonder how much of what I see is dirt vs. rust? You might try warm water with a drop of dish washing liquid. Don't rub, just dab. Get the soap off with plain water. Try this where is won't show too much.

LOL, you've got to choose your type of interest from a list. I'm now a hifi enthusiast. I'm gonna crank up my 70's era solid state stereo until the Dynaco speakers blow. BTW, those Dynaco's have real walnut veneer.

xtian wrote: ↑Mon Jul 24, 2023 5:42 pm There's nothing wrong with the SG...

As they say, there's no accounting for taste! Are you keeping it? It might sell for a good price.

The $250 Harley Benton DC-LTD I got plays better. In the hands of an experienced luthier, a proper setup of that SG should make it play like butter. Take it to someone in the know. Skip the DIY setup...you know the labor rates: $50/hr for regular setup, $100/hr if you wanna watch, $150/hr if you fi...

I've been thinking about this. It looks wrong. I think these are counterfeit. Someone made some Elna labels and did that. Someone should ask Elna directly if these are legit. I don't think the answer will be a surprise.

I may be headed the same place as Steve. Something isn't adding up. And just to check the obvious, you are using slow-blow fuses? It certainly won't hurt to swap out the suspect rectifier socket. Your description of it makes me want to pull it and throw it away. There is a point of diminishing retur...

May you become the Norm's Rare Guitars of NoCal!

No mention yet of the "woman tone." If you are too young to know what this is, here at about 1:54
https://www.youtube.com/watch?v=n9ODNQPQo3A
I guess it's not really amp content, but it is dependent on the signal chain.