2. amps-preamps
  3. 1118252802

Hum thru an HP100 Hovland

Hi:

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...

Fernando
flg2001

Showing 1 response by flg2001

flg2001's avatar
flg2001 OP
543 posts
 
Thanks.

I got rid of the hum problem placing an earth-splitter jack in the CDP. As for the cracking noise in the level knob I did call Hovland and gave me some options of sprays that could works, since there are some others that may be harmfull for the silver wireing in the knob.

Thanks all.

Fernando
More to discover