Audio wiring faulty?

[PDACPA]

I just replaced the door speakers and rear deck speakers with some brand new Blaupunkt replacements. They fit perfect and look great.

I also replaced the aged Blaupunkt Reno with a new Blaupunkt Miami Beach which also fit perfect and looks nice.

I had a radio shop run the wires for the new radio to bypass the preamp (factory) that is under the drivers seat.

My problem is that I am getting static sounds, cutting out of speakers momentarily, etc. For the most part it sounds fine, but these symptoms occur.

I am wondering if the old stock wires for the speakers could be faulty and should they be replaced? I double checked all the connectors on the speakers and they all fit tight and are on the correct posts.

Thanks in advance and if your advice is to replace the wiring, how difficult is it to get to the door wires? The rears appear to slide down behind the rear passenger seat and under the carpet.

[gr8fl4porsche]

I doubt if its the speaker wires.
Sounds like a connection problem or most likely a bad ground.
Check all the connections again, speakers, head unit, ground wire.
Check for split/cut wires where they may be move or go thru an opening.

[mike f]

I recently upgraded my stereo and had the exact same problem afterwards. It turned out to be faulty wiring in the door, specifically the drivers side. If you take off the door skin(or just the speaker itself), you can reach in and jiggle the wires. This reproduced the static. To change out the wires was easy. Just splice the new wire onto the old one securely. Spray lots of wd40 on them, and firmly but gently pull the wire through from inside the cabin. The whole process took only a few minutes. Good luck.

[PDACPA]

Door re-wire sounds easy enough.

I was hoping the connections on the head unit (and to the speakers) were ok since the radio shop did it and they are highly recommended. I will double check those first and then reconsider the rewire options.

Thanks guys.

[bell]

depending on how they bypassed the factory amp, they could have a wire shorted somewhere. either by incorrectly bypassing it or by running a screw through a wire. i've been doing this for 10 years and trust me, even the best shops make mistakes.
the difference is the better shops WILL find the problem and not charge you again.
if you have a multi meeter you can check for grounded out wires.
1....unplug the radio (need to do this so you won't see a ground through the radio)
2....take one of your meter leads and ground it, then at the radio plug, take the other meter lead and go through the 8 speaker wires one at a time. leave the speakers hooked up and mounted while doing this also, many times it's the speaker basket that has a short.
if the meter reads ANY continuity to ground it can cause all of the problems you mentioned.

hope this helps

[Roland Kunz]

Hello

A other problem is that high power amps build into the head unit will run into heat relatet problems. You must vent the unit wiith a small hose and blower to avoid cliping noises under load.

Always the best is to have headunits without any amp and leave the amp underthe passengerseat.

Grüsse

[PDACPA]

I did not even realize I had a preamp under the passenger seat until I went tracing the wires before install. That was how I ended up letting a radio shop do it.

I skipped replacing the amp as I was just wanting to have a clear workable cd/radio which for the most part I have. Of course driving yesterday, it did not show any symptons of not working right. I am guessing the connectors may be loose, or maybe the grouding issue.

I will take a look at it this weekend, and if I suspect the radio shopped made an error, take it back to them to test it out.