Can anyone help me determine what amp this is?
It's supposed to be a Marshall circuit..
What circuit is this? SOLVED
Moderators: pompeiisneaks, Colossal
What circuit is this? SOLVED
Last edited by guile on Mon Aug 26, 2019 9:28 am, edited 2 times in total.
Re: What circuit?
2 EL84's, bunch of 12AX7's, pot layout, suggests this is a TMB 18 Watt.
Channel one would be just Volume and Tone. Channel two would be Volume, Treble, Mid, Bass.
Transformer looks to be the appropriate voltage.
I did not look at the component layout.
It seems to have an extra 12AX7. Maybe it has the tremolo, too?
Rectifier is wrong. That looks like an octal, maybe GZ34? To be proper, it should have a 6CA4/EZ81. I can't imagine this would affect the tone.
Channel one would be just Volume and Tone. Channel two would be Volume, Treble, Mid, Bass.
Transformer looks to be the appropriate voltage.
I did not look at the component layout.
It seems to have an extra 12AX7. Maybe it has the tremolo, too?
Rectifier is wrong. That looks like an octal, maybe GZ34? To be proper, it should have a 6CA4/EZ81. I can't imagine this would affect the tone.
Re: What circuit is this?
It's a Trinity TC-15, which is a 15 watt version of a Matchless DC-30.
Re: What circuit is this?
Thanks a lot for the replies!
Re: What circuit is this? SOLVED
Why did you remove the attachments? 
Re: What circuit is this? SOLVED
heh yeah I'd like to take a look at that. The TC-15 was my gateway drug into the world of amp building... my first ever build! Great sounding amp too.
Re: What circuit is this? SOLVED
Your avatar wouldn't care.