Hum thru an HP100 Hovland
I have just bought a used Hovland HP100 preamp, it mated great with my CJ amps and Avalon spkrs, but... there are a couple of issues where I requiere your expert help:
1.- Everytime I get my hand close to the volume knob or whenthe CDP is reading the directory table index, it creates an audible hum in both spkrs, is that what microphonics is all about?
2.- There looks to be some dirt in the volume knob, since for each step I move it (up or down) a scratch noise is heard, what should I use to clean it since it has some silver and other exotic components involved in its design?
Thanks for your help, I really need it...