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Mobile Electronics Australia > Mobile Electronics Discussion > Sound Quality Discussion
simmoclayto
Hi guys

I have a slight issue at the moment.

I setup my stereo system and its been working perfectly for the last 3-4 years.

Basically the setup is:

2 x 5" speakers connected directly to the head deck

2 x 6x9's connected to a 1000watt 4 channel amplifier

1 10" subwoffer connected to the 1000watt 4 channel amplifier.

The amplifier has two built in fuses as well as a manual one I put in before the current gets to the amplifier to hopefully save the amplifier.

So its been working fine till now.

All of a sudden the sub and 6x9's stopped working (but the 2 x 5" continued to work). So I originally thought it was the amplifier or the fuse. I tested the manual fuse and it was fine.

I put in another amplifier which previously was working....but that didn't work either. The amplifier actually turns on though.

So from there I thought it must be a cabling issue (that connect the ground to the head deck). So I replaced the cables and it still didn't work.

This led me to the conclusion that it must be a head deck issue........however when i tested the cable wires (that connect the ground to the head deck) again with the stereo still on I found that when I attach the two cable wires (that connect the ground to the head deck) together that the speakers work for half a second before cutting out.

This has got me puzzled. does anyone know what might be happening?? or any advise??

Cheers

Simon

syd-monster
Im having a little trouble understanding what you tested out, specially when you conitnue to connect things to ground... however cool.gif lets try this.
It sounds to me like either:
a) you the speaker wiring from the amplifier to one of the 6x9's or the sub has shorted out. That is; the copper cores inside each cable are touchin each other somewere in the lenght of cable
b) or the cabling plastic seath (outercover) is damaged and touching metal of the car somewere, thus shorting it to ground.
c) or one of the voice coils in one or more of the speakers is damaged and shorted out.
>>> all of these COULD THEREFORE be making your amplifier go into protection mode and its shutting itself down, pretty quickly.

I hope that helps, its
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