damping (BD-Design)

by GC, Sunday, August 07, 2005, 16:14 (6831 days ago) @ GC

Hello Bert,

Most hum heard is in opposite phase so if both bass channels are equal and
you're sitting in the middle then the hum is highly reduced...

The hum has a standing wave pattern with minima and maxima only a few decimeters apart so I can sit with my head in a minimum. Since this is not a good long term solution I started yesterday evening again with a thorough check of all wiring. I was inspired by a well written story on ground loops, EMC, cables, etc., found on www.breem.nl (in Dutch).

I found something questionable which is drawn in the added image. As you can see both speakers and the bass amp are floating. Do you connect this the same way or do you ground it somewhere?

Best wishes,
Eddie

Tags:
0