Dual mono with REL Subwoofer

[PeppaPig]

Did you do the step by step REL set up procedure? If not, start again. I've never set up a subwoofer but from what I've read, if you don't follow the procedure to the letter you will never get it to sound right.

Just a hint from Jim Smith, who uses REL subs. Instead of using bass heavy music, he uses a solo female voice as a reference. After all, the voice is where the music is.

Hi Pim, no I didn’t strictly follow their instructions but about 70% followed

Now my problem is the humming sound. I tried many way and I can’t not address it, it’s extremely annoying.

Could the humming sound have anything to do with ground and the fact you're using high level outputs? I can't find it at the moment but i believe @f1eng had something to say about it. 


BTW, if you only followed the REL set up procedure by 70% then you know what it takes to get the sound 100%...do the other 30% 

Hi Pim and Mart, I have spent entire afternoon tried many ways, and could not get it resolved!!! Somehow I feel the problem is on the Devialet, because once any cable from subwoofer connected to any post on the Devialet, it starts humming, no matter the ground wire or the red/yellow one.

Tried using same power board, tried connect ground to the chassis or other rca post, tried different power outlet, all generates humming. Doesn’t matter if Devialet is on/off.

I also read the REL manual about resolving humming, doesn’t really help me.

Does this only happen on high level input? I don’t have any other cable so I can’t try the low level input.