Try using a cheater power plug on the sub.
I had the same problem with my Sub Utopia.
Could also try one on the amp to see.
REL Sub Hum
Hi Folks, looking to see what the issue could be. I'm hearing a substantially loud hum coming from the REL T5/I sub when connected to the Parasound A23 power amp. The other two amps have no issues... what is a power amp would cause this issue?
REL subwoofer is connecting using speakon cable... I have not tried LFE/.1 to see if the issue persists....
@mullster No. A cheater plug. It goes on the end of the subs power cable and into the outlet. It eliminates the ground prong |