I installed two subs and an amp on saturday, and had to take out the receiver to plug in the rca wire. Everything worked fine(and i've had the receiver for a little more than two months) till sunday. All of a sudden the music stopped playing while I was driving steadily on the highway. I turned off the receiver and waited five minutes and afterwards it worked again normally. A little later it cut again, and came back by itself a few minutes later. This has occured 5 times within two days. The receiver itself does not shut off, it looks perfectly fine even the track time keeps going, but no sound can be heard, not from a cd or from the tuner. My speakers are still plugged directly to the radio(no amp) and my subs have the amp which is connected by rca. So, it can't be a that all speaker wires come loose, even so the rca would keep pumping the subs. And, it can't be a ground or power wire problem either because the radio doesn't turn off, it stays lit normally the track keeps rolling.(When taken out of the dash I can see through the casing the cd is still turning) I am completely clueless as to what the problem is, I'm beginning to think it might be an internal problem with the receiver, the chip modulator or amplifier circuit inside...(Dont' know too much about electronics...) So, if anyone has any idea please help me!!
Do you have your subs in paralell and the amp bridged? is your impedance too low causing a thermal overload due to not providing the minimal impedance? could you give amp and model number along with sub , how many voice coils on each, and where youy have the amp physically located so I may better diagnose and help you fix your problem?
Posted on Apr 24, 2007
Assuming that you have no sound from any speaker (hardwired and amplified from the phono/RCA output) I think it could be a fault introduced by your sub install. Have you tried unplugging the phono lead to the sub? If the phono lead has a short in it, it may effect the entire system. It could also be down to heat or lack of power. Have you got adequate thickness of cable and a high enough rating of fuse?
Posted on Apr 24, 2007
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I installed a kicker zr240 with two jl audio 10w08. I bridged the amp and plugged the subs in parallel. I used 4 gauge wire for power and ground, an 80a fuse as well as a 2.5 farad cap. The amp is sitting in the bottom of my trunk.
I doubt it is a lack of power because last time it cut, I checked my voltage and it was fine. And, I also doubt that the radio over heats, cause yesterday morning the radio cut after two minutes of riding in the car, the volume was low and my engine temp hadn't even started going up. So, everything was still cold.
I'd be most happy if you could identify my problem without it being the receiver itself!
I fixed the problem. I had temporarily installed 2 speakers in the back and had just twisted the connecting wires by hand and covered them with electrical tape. One of the twists got loose and was creating too big of a resistance at times, which would trigger the protection of the receivers' amp, cutting it off. I spliced the wires properly using tubes and the sound hasn't cut off in 3 days....I assume it was the problem.
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