infinity Gold stock amp... One channel out? - JeepForum.com
 
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post #1 of 3 Old 12-09-2012, 01:38 PM Thread Starter
Bobbo7
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Join Date: Dec 2012
Location: Butler
Posts: 2
infinity Gold stock amp... One channel out?

I have a 94 Grand Cherokee Ltd with stock infinity gold stereo.
RR speaker not working.
I've verified from the connector at the amp that...

1. I'm getting signal from the factory head unit (pin 5 & 6)
2. Good continuity from connector to the door wires (pin 3 & 9)

Got the diagrams from this forum THANKS!!

From wiring dgm posts... I don't see separate fusing for each channel.

Other 5 outputs working FR, FR tweet, FL, FL Tweet, LRear.

Any ideas? or is that channel in amp out??

Thanks

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post #2 of 3 Old 12-09-2012, 03:41 PM
funkduck
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2015 KL Cherokee 
 
Join Date: Apr 2012
Posts: 1,210
I've had the later generation Infinity factory amp apart, there's not provision in the device for individual fusing.. in fact the IC's drive the external connector pins directly, you can see the big fat traces on the PCB right here (they go under the rail caps, but connect directly to the drive IC's) - so if you have a dead channel, the amp's dead. See if someone's selling/giving away theirs, or start shopping for an aftermarket replacement

Note: since it's a rear channel output not working, you may also be able to simply bypass the Infinity amp and drive the rear speakers directly with the head unit. I'd suggest doing this for both left and right at the same time and making sure you get polarity correct (wrong polarity won't cause a failure, just bad sound) - it's a cheap-and-dirty way to do it, but I'm not above doing cheap things when the cost isn't worth the results.
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post #3 of 3 Old 12-11-2012, 05:20 PM Thread Starter
Bobbo7
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Join Date: Dec 2012
Location: Butler
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Thanks, that saves me from opening up an amp I'm not impressed with! I'll grab one from salvage. It's not worth an audio upgrade. The head unit is so weak it's not worth the bypass but thanks for that option. Grandpap handed this one down to my 16 year old for his firs ride!! so the stereo matters...
It's safe and runs good.
thanks again for the quick response
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grand cherokee , infinity gold speakers , speakers

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