Clarion DXZ765MP noise problem

**fpb600** · 12-25-2006, 10:26 PM

Hey guys I just bought a new Clarion DXZ765MP deck and am having a bizarre sub output problem. The RCA sub outs on the deck send a strange low frequency rumble to my subs. The rumble also occurs when I connect the sub RCA output to my front speaker amp -- it appears that the deck is the culprit. The volume of the noise stays the same no matter where I have my volume control on the deck. It only goes away when I completely turn the deck down to volume setting 0. Anybody else ran across this issue with Clarion?

System:
Clarion 765MP
Focal seps (front)
Focal coax (rear)
Alpine 4ch (front/rears)
MTX 2160 (subs)
1pr Kicker 12"

**RedGTiVR6** · 12-27-2006, 01:46 PM

did you have it professionally installed?

btw - check out this thread, it might be helpful considering your questions: Have Car Audio Specific Questions?

**crooper** · 12-30-2006, 04:22 AM

I'd say it's in the head unit. Many HU's have a feature where they mute sound at volume 0, rather than sending a "zero" signal to the preamp. Sounds almost like a test signal to me. Check your crossover settings and stuff. Might want to look at Clarion's website for troubleshooting info.