Bob / Anyone:
Set up the Aura's with a splitter at the sub preout. (Aura's connected to Old Kenwood amp.)
When the amp (Kenwood / Aura's) is on, getting a hum on the powered sub. I can turn down the volume on the sub to eliminate the hum, but lose power doing so.
Tried different cables, no splitter, hum is eliminated when running without the shaker amp.
Any ideas on what is happening, or what to try next?
Tried a dfferent amp on the same setup, still the hum when connected and poweed, different cables, too. Hum is eliminated when not using the split signal, however is only around when the separate shaker amp is powered. which auto starts the sub amp. If the sub amp is off, the hum only appears when the shake amp is powered up. Some type of current is being passed back through the cable, seems to me. Not sure how to eliminate it.