by daveshel Sat Mar 12, 2016 2:00 am
I'm also in the process of converting a PAS2. I'm not particularly interested in ever using tone controls, but I thought if I could make them switchable it might be worth while to keep them. My thought was that even if they are the -X type, the signal is still routing through them, and if I could eliminate them entirely from the signal path, that would be preferable. But my search for switchable mods led nowhere. I'm now inclined to eliminate them from the circuit, even if I leave them in place physically.
I'm not as concerned as you are about keeping it as original as possible, as the original power supply wasn't very good. I plan to evaluate the original audio circuits with an updated power supply in the next few weeks. My tone control decisions will come later, so please keep us apprised.