[jerryhawthorne]

Listen to Ron and others, A/C on your voltmeter. I generally go across the voice coil. Turn up the volume to max and turn your signal generator down to the lowest A/C voltage you can see well. Then peak the IF stage. Keep the signal generator as low as you can when things go up on your meter reading and peaked, back off the signal generator and peak the last one. The hum bothers the little lady upstairs but I either turn down or remove my hearing aids and watch the meter (analog, a DVM will drive you crazy).
Jerry