[Kermy]

Hi guys, got a question about the PIMETA schematics.

On the power supply part, it shows M- and M+. What are those for?
The other question is, is it correct that IG is connected to power?

TIA,
Kermy

 

[jnewman]

IG is the in for the ground channel from the source - you have IL, IR, and IG. IL is signal from left channel, IR is signal from right channel, and IG is the ground of both channels.

 

[thrice]

Quote:

Originally Posted by Kermy On the power supply part, it shows M- and M+. What are those for?

Tangent explains this in his tutorial for the MINT amp:

"M+, M-
If you want to do 2x9V in series or something similar, the 'M' pads are the "midpoint" connection. That is, you run the + wire from one battery strap to V+, the - wire to M-, the - wire from the other battery strap to V-, and the + wire to M+. This ties two opposite-polarity wires from the batteries together at the 'M' pads, and the outer pair goes to the 'V' pads. By using the 'M' pads, you can avoid splicing wires together by hand."

If you buy the PIMETA board from him I think there are just two sets of + and - pads on that board, but it's the same basic idea. If you only want to use one battery strap/power supply, then you just run the + and - to the outer most pads on the PIMETA board. It's all in his step by step instructions.