I spent quite a bit of time searching existing threads this prior to posting.
I was hoping someone could help me get to the bottom of my T7I hum issue. I have reviewed the available documentation from REL and videos as it relates to connecting and troubleshooting and have had no success with the reccommended steps so far.
Sub seems to perform perfectly when amp is powered on. I immediatly get a hum when amp is powered off (this is typical I understand).
Sub is connected to + L&R on amp. I initially tried to float the ground. before noticing the hum after powering off
Tried connecting ground to the outer ring of an unused S300 RCA jack to establish ground (no luck) There is no grounding post available on the back of this amp
I then tried running an RCA from the LFE.1 on the sub to an available jack on the amp (no luck)
I then disconnected everything from the sub accept AC plug and switched on. Still Humming. I then tried the same in other areas of my house which I know are on different electrical circuits. Still the same. Should this thing hum when not connected to any signal? It is a real hassle to have to switch the sub on and off every time I use the system and frankly not worth the compromise.
The issue I am having sounds very similar to the REL/BHK problem that is resolved with the resistor network
I have not been able to reach Rel support over the phone as they are probably affected by the CA covid shutdown. My frustration is leading me toward returning it for a SVS SB1000 which has speaker level connections and a standby mode. I would appreciate any suggestions to try before I box up the REL and ship it back. It would be a shame. Thanks.