hey guys i need your help with my hu.
its an older alpine cda-7892 and im having noise come out of my sub rca's.
here is my set up==memphis belle 1300 5 channel amp
2 mb quart comp sets
2 memphis pr 12's and the alpine hu.
the sub outs from the hu have a left and right and the belle only has 1 rca input so im useing the 16-bridge summing box and a set of the matching memphis 5 channel rca's.
im geting a constant rumbleing noise coming from my subs. i tryed switching the sub rca's with another set and it the same thing.
my belle amp has an auto summing feature that if you feed the 4 channel part of the amp a full range signal it will automaticly give the sub side of the amp signal and the bass will play normal just not as loud and the correct way with the 16-bridge and the sub input geting a rca.
all of my wires are fine so only thing im thinking it could be is the hu it self.
and idea's,help or sugestions will really help me out.
thanks
