Rear Speakers failed - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-20-2006, 12:55 AM   #1
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Default Rear Speakers failed

Hmm
700 Watt Infinity 4 channel AMP
Powerd by my Sony Deck
Speakers are connected DIRECTLY to the amp, ofcourse, I did not use any of the stock wiring at all when I installed in June.
Driving tonight, I had my tunes on, changed the station and suddenly, i only had front speakers working.
I messed with the fader, fade compleatly to rear, and I can hear SOME through the rear, however, I think the only thing working in the back is my stock tweeters, or so it sounds anyway.
There was a slight "hot speaker" smell in my trunk, however, they do that after a really good workout. Nothing was warm at all, not even the resistor on the rear speakers.
Both rears are MB Quarts, as are the fronts.
Tomorrow at work i will mess with them a bit, what should I check for primarily?
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Old 10-20-2006, 12:58 AM   #2
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if you truely blew the voice coils on the speakers, you would know. They smell pretty rank.

I would start with checking all your connections. Try swapping the front and rear speakers on the amp. See if the rear speakers work then. Technically you could have blown a channel on the amp.
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Old 10-20-2006, 01:14 AM   #3
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disconnect the leads at the speaker, and use a multi-meter to check for a blow or open voice coil
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Old 10-20-2006, 01:32 AM   #4
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Quote:
Originally Posted by BlackIce
disconnect the leads at the speaker, and use a multi-meter to check for a blow or open voice coil
aka....measure their resistance
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Old 10-20-2006, 01:42 AM   #5
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Reistance..easy enough.
What kinda of reading..?
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Old 10-20-2006, 01:58 AM   #6
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Quote:
Originally Posted by SSEimatt93
Reistance..easy enough.
What kinda of reading..?
resistance is measured in ohms
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Old 10-20-2006, 02:11 AM   #7
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I know..am I looking for an infintate reading? or a specific numeric ammount?
I would be suprised if its the speakers..they kick ***..
If its the amp..WARRANTY!!!
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Old 10-20-2006, 08:56 AM   #8
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Quote:
Originally Posted by SSEimatt93
I know..am I looking for an infintate reading? or a specific numeric ammount?
I would be suprised if its the speakers..they kick A$$..
If its the amp..WARRANTY!!!
OL or 0 is bad

a good 4ohm speaker will generally measure between 3.5 and 4.5 ohms
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Old 10-20-2006, 10:27 AM   #9
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It would be easier, troubleshooting-wise, to just swap the rear and front RCA'*. If you get no sound from the front speakers being hooked up to the rear channel, then it is your amp (same if you get front soundstage from the rear speakers).
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Old 10-20-2006, 10:47 AM   #10
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I'm going to test that right away...
Thanks guys!
If its the amp, i can send it in to get fixed or whatever the warranty requires..i can toss an old 4 channel in there in the mean time...



On the topic...
I am running 4Ga wire from the battery to the amp.
Say I want to get a GOOD 12" sub, a small truck sized box (not to hinder all the space in my trunk)..how Does a person go about hooking up another amplifier to a 12" sub, when I already have an amp wired in?
Should I run a cap?
Thank You
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