Gretsch Amps

6154 SuperBass

3

I am refurbing a 6157 piggyback.

Maybe the same circuit?

4

I am refurbing a 6157 piggyback.

Maybe the same circuit?

– Twangmeisternyc

Cool man! Didn’t know you had that talent.

5

Very cool, I love this stuff! These old sets are a lot of fun to refurbish. Good luck with it, it looks like a fun project.

6

Like this?

– Twangmeisternyc

Yes very similar although I think what I'm working with is slightly older or the grill cloth was replaced early on.

8

the rectifier tubes are different than any other Scheme I've seen in this era of Valco Amp

9

The tube layout seems a bit different, but I can see evolution out to my 6157. It has 2-12ax7s and 4-6L6s. Transformer plan seems the same, and I would guess the 6154 has 2 parallel amp stages out to the 2-12" speakers.

Mine was built during Valco's last year....

10

The tube layout seems a bit different, but I can see evolution out to my 6157. It has 2-12ax7s and 4-6L6s. Transformer plan seems the same, and I would guess the 6154 has 2 parallel amp stages out to the 2-12" speakers.

Mine was built during Valco's last year....

– Twangmeisternyc

Yes it is a parallel circuit, something like 70 watts total. The two rectifier tubes (5U4GB's) seem to be the missing components.

11

Anothr View

– Leslie K Scilley

Any photos of the power chassis? I’m rebuilding one that had been chopped up and can’t seem to get my left side Power amp operating properly.


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