I have 7 devices plugged in, if my preamp (tube based self built) and chip amp (LM3886 self built) are in the "always on" bank I get ground loop hum. I get it if either is in the "always on" bank. If I put them both in the switched bank the ground loop goes away. Changing the way the other 5 devices are plugged in doesn't change the hum.
This started a few weeks ago so something has changed and I wonder if something internal in the Panamax is the issue. It is dead quiet with the amp/preamp in the switched band but I wonder if I should just replace it. I bought it years ago pretty cheap used.
I don't really care much about the filtering I just need a decent strip of outlets. Any recommendations?
This started a few weeks ago so something has changed and I wonder if something internal in the Panamax is the issue. It is dead quiet with the amp/preamp in the switched band but I wonder if I should just replace it. I bought it years ago pretty cheap used.
I don't really care much about the filtering I just need a decent strip of outlets. Any recommendations?
I turned the system on this morning and the hum is back. I unplugged the preamp from the Panamax and plugged it back in to the same outlet after 10 seconds and the hum went away.
You could take the Panamax apart and inspect the wiring (unplugged of course!).
You may also have an intermittent in any of your devices. While you have hum, try moving each power cable one at a time, also each RCA signal cable. You want to have more clues as to what you problem really is.
You may also have an intermittent in any of your devices. While you have hum, try moving each power cable one at a time, also each RCA signal cable. You want to have more clues as to what you problem really is.
Antech
I already did all that. With no rca cables connected and all other devices unplugged the hum was there. Plugging the preamp directly to the wall stopped the hum also.
I already did all that. With no rca cables connected and all other devices unplugged the hum was there. Plugging the preamp directly to the wall stopped the hum also.