Jeff Rowland with Rel sub

I got noise(pop) and hum, but nothing fried. I am hooking to the speaker terminals as per instructions in the owners manual.

What I was told, but do not understand, is that the Rels were not designed to connect to a differentially balanced switching amp which I guess is a digital switching amp.?. It hooked up fine to my Concentra, but not the Concerto. It cannot be connected to the Balanced Hi Output on the back of the sub or it will not play or if it does will crack, pop and also the gain control will not work along with an audible hum. It was recommended to try the Low Level so I wanted to know if anyone had luck with this before I invest in a subwoofer speaker wire with the RCA jacks. Or if someone had come up with a solution that works for them.

I connected according to the directions in the owner's manual: FIG 2 unbalanced high level input at the sub. To the amp: red to right positive, black to right negative and yellow to left positive. Todster, I tried your suggestion and got nothing.