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Jeep cherokee infinity amplifier

My caar, jeep cherokee 2000 has an Infinity Mdel #36670, serial # 56007653AD and the front speakers have quick working except for one tweeter. Are the amp or speaker problems easy to fix

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Yes, you have a few options. Chances are, its your amp. 
1st I would test the speakers - find the amp under the back seat, then test which wires go to the front speakers and use a AA battery to check if the speaker pops with those two wires and the battery.  If it does pop, its your amp needing replaced.  You can switch out that infinity amp for an aftermarket one very easy. Just use a testlight, or voltmeter to test the wires, and switch them to a new 4-channel amp.  
if you need the wiring diagram, let me know...and dont forget to rate me! or ask for more help!

Posted on Sep 04, 2008

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I have very similiar problem. I have a 2003 grand cherokee. front speakers are very low, mostly just bass from them. So I switched them out with brand new sonys. wasnt the problem. I put in all new speakers head unit and amplifier and my front speakers still are very low sounding. any help?

Posted on Jan 29, 2010

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You have to cut the factory speaker wires on both sides of the amp and solder them together.(bypass the amp) Pull out the factory radio so you can identify the color of the speaker wires or look at the wire colors on the back of the factory speakers.

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are the tweeters connected to a crossover?

I'd recommend a rockford fosgate 4 channel punch series. affordable, yet the quality is superd. i had a p450.4 run infinity kappa series seps in the front and a polk audio db691 ovals at the back. wired it up. it was LOUD. and the clarity was just amazing.

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The easiest thing to test is to try swapping the connections of the front component speakers at the amp connections. If the problem follows the speakers, the issue is probably with the speakers. I would triple check (again) the speaker wire connections. It's also possible the crossover for the driver side component speakers has an issue (thus why the tweeter worked for a while).

If the problem stays on the drivers side, the issue is probably with that channel on the amp. Triple check the RCA connections for that channel.

It's much easier to test other speakers on an amp channel versus trying to check it with a meter.

If the driver's door is "abused" often, my initial thought is the wiring at the speaker or the wiring in the speaker (to voice coil, within the crossover, etc) is the most likely culprit.

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