Amp or Subwoofer causing Hum?


 Recently (after Beryl) I noticed a strong hum coming through the subwoofer. I changed cables still hum. I disconnected the subwoofer cable from the amp no hum. I turned the sub on but turned the amp off still a hum. I switched the center tube position still hum. No noticeable hum from speakers. Sub hooked up to carable out. Used y splitter and single rca outlet hum consistent with both .

 

any thoughts or suggestions on what to do or which item to have checked out first? 

Rogue Cronus 2

Rsl subwoofer 10s mk1

Geshelli dac

wiim streamer

falcon Q7 speakers

brianportugal

Showing 3 responses by brianportugal

I’m hooking the cable via variable out Not to a speaker terminal. If I wanted to do what has been suggested would a wire from the amp phono ground work but to what alternate ground? 

Yogi boy if I use the fixed section and I adjust the volume up or down on the amp will it adjust the sub volume to maintain the balance ? I used the splitter to go into left and right of the amp. I use one cable from the sub with a splitter to the amp so both left and right are connected. Is think not good?