Hello.  I hope I am posting this in the right section, if not I am sorry.  I have been in touch with loud technologies and they sent me the mic board schematic and the 18 different versions of the DSP board.

For those interested, I need to find the source of 5 volts DC on the speaker outputs. This tends to bias the speakers, which is not a good thing for the speakers or the sound of the amp, which you might imagine.

Thank you

Toby