ricohman
Adventure Rider
Yes. The VR1 and VR2 potentiometers are for adjusting the DC offset, VR3 and VR4 for bias. You can make your life a little easier by jamming your meter probes into the speaker outputs (making sure that whichever speaker group you choose is ON!) when setting the offset, rather than probing directly at the board.
I see, thank for the tip!
I am going to give this beauty a good cleaning today.