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High ohm reading on LH rear speaker wire, VP Calais standard head unit

VR38

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I am getting really high ohm reading (taken while system on) from the left rear speaker wires, around 120-160 ohm and the speaker sounds like crap.
The RH one is quite low, under 30, which i assume is normal as the right speaker (and the front speakers) sound normal.

Would it be a faulty head unit or a wire earthing somewhere?
 

aussie4life

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where are you testing it? HU or speaker? Is it original wiring or have you replaced it with better quality stuff?
 

Tasmaniak

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Not sure how your reading it but you need to test them disconnected from the HU and they should read about 3.8-4.2 making sure you are not touching the cone. A higher impedance will sound like arse and have heavily reduced volume. a lower impedance will put a lot of stress on your HU
 

VR38

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Speaker resistance is fine, tested at 3.8ohm.

The test I need answers to, the measurements have been taken from the speaker connector where the wire ends.

Whole system is standard VP Calais.
 

Tasmaniak

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Measure the resistance between each of the speaker wires and an earth. If there is a difference then yes, earthing issue. If they are all the same... the problem is H/U If they are different though, it may still be the headunit, you will then need to disconnect the head unit and measure for ANY short to ground. If none on any speaker wire... Turf the HU.
 

VR38

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Thanx for the tip, will resume testing next soon.
 

Tasmaniak

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No sweaterooni mate! Good luck!
 

VR38

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Ok, tested at boot and foot well, nothing showing to ground but still getting the high reading on the left positive and negative wire from the HU. :(
Console coming out soon...
 

hakhawk

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have you tried swapping the front speakers to see if it follows the speaker?
 

VR38

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The problem is in the wiring (or HU) nothing wrong with the speakers.
 
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