Stereo on/no sound

December 02, 2007, 01:43:04 AM

First, this is not in my car, but a newer Subaru Legacy - I think 2005?

Anyways, supposedly one speaker at a time quit working after replacing the factory stereo and speakers with a Pioneer DEH-P880PRS and some Infinity Reference 6.5" speakers in the doors (not sure the model) - Two of the factory speakers were blown. I went in there today to take a look into this and removed every crimp connector to solder/heatshrink every connection from the stereo to the speakers. Everything tests out fine at the headunit with 11.8-12v coming in from the red and yellow wires, and something pretty low on the ground loop. From the harness to the speakers, they range from 3.6-4.0 ohms resistance with no continuity to ground. From the stereo being turned to max, there remains ZERO volts AC coming from the speaker channels.

I pulled the stereo and hooked it up inside to one of the speakers from the car and a power supply. Everything tests out fine and all 4 channels work with 3-4v on the speaker lines at full volume (just to get a reading so I know what to look for when in the car). Hook back up in car, no output from speaker wires again. Unhooked all speakers at the doors and the circuit on each set of speaker wires stays open ("1" on the multimeter).

From what I'm gathering, one of these factory wire runs are messed up somewhere, causing the headunit to go into protection. Is the next step to solve this removing speaker wire pins from the connector until I find the one thats causing the problem? Ideas?

btw, I got snowed and rained on hard today trying to solve this. I'd rather have an order of probability I can use to test this thing tomorrow so I don't have to freeze my ass off again.