Metal Rat?

[Michael Allen]

I modded my RAT using the AMZ Rat article ($7 and pretty good, you get the BMP too) with the Metal Rat tone control. It doesn't really matter if you have the article or not, to answer this question.

I put a Big Muff tone control in place of the filter, and now the volume is barely present. Does the BMP tone cut that much volume? I'm not sure if I wired something wrong, or it's just the control sucking all the volume.

Thanks,,,

[toneman]

Did U build the FATRAT "stock" first to check construction/output??
Then did U replace the Tone control, R10, along with R4 and C6?
These parts comprise the FR tone control.
C7 is a coupling cap, leave it in.
Inserting the BMP tone circuit *should* B OK.
The tone control is the same for all 3 versions of the BMP--
(PNP, NPN, or opamp).
Got all the midpoint biases correct?
afn
tone

[petemoore]

Probly, I always stick with the 5088 gain recovery transistor section as per BM circuit...the one right after the tone pot and cap.
 Yupp just boxed a Heavy Metal Pedal with BMP tone control and gain recovery Q.

[RDV]

Yupp just boxed a Heavy Metal Pedal with BMP tone control and gain recovery Q.

Ya did? Do ya like it? I've got my bass player using one on "Pinball Wizard".

RDV