1

MP573 Microphone preamplifier / No input when testing

« on: March 16, 2021, 03:49:00 PM »

Hello, I did the LA502 on one shot but the MP573 was my first DYI, so I did some mistakes I guess because I got no input (either on xlr or jack). I can hear some click when switching to the 1200 ? and the gain / trim reacts. 
The 1st generics tests was ok but here's the results of the error procedure:

A: 2v70
B: 4v16
C: 23v
D: 13v92
E: 2v08
F: 13v33
G: 0v50
H: 1v07
I: 0
J: 4v27
K: 0v41
L: 0v15

thanks for your help.

2

LA502 Optical Compressor / about P3

« on: March 13, 2021, 12:02:41 PM »

Hello, how to be sure that P3 is really at 0?
is it a way to check it?

thanks