Ok, when i operate "high/low" (!) level switch, my rails at rectifiers are changing. When switch is in position "hi" - my readings at rectifiers are -62v and +33V on center legs. When switch is in "low" position, i get -32 and +33. Amp ground terminal as reference.
When using negative speaker terminal as reference, i get good -62v and +62v on both switch positions.
When using negative speaker terminal as reference, i get good -62v and +62v on both switch positions.
Is the high/low audio signal input switch?
That shouldn't make a difference since it only appears to change where the amp gets it's turn-on signal.
Use the negative speaker terminal as the reference when measuring the voltages on the secondary side of the power supply (rail, regulated...).
At this point, does the amplifier produce audio?
That shouldn't make a difference since it only appears to change where the amp gets it's turn-on signal.
Use the negative speaker terminal as the reference when measuring the voltages on the secondary side of the power supply (rail, regulated...).
At this point, does the amplifier produce audio?
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.