Re: Issue with OEM radio sound cutting out . . .
Originally Posted by Ian69
(Post 841862)
Have just checked and can feel a flow of out of the pipe and here the fan running
It is a gentle flow not a blast Is this sufficient to cool it? :) Should be IF the car A/C fan isn't on (you could be feeling the air exhausting out the end where it exits the car). If it is blowing with the car A/C fan off then it is blowing enough. So, something may be causing a thermal shutdown, is there any dirt/sand/debris around the amp? If not, is there a bad impedance mismatch on the output to the speakers (ohm the coils from the plug at the amp going to the speakers not the amp side, the values/pinouts are somewhere in the service manual available for download). Is there any specs for how much current the amp draws? Can you measure that value to compare it? :) . |
Re: Issue with OEM radio sound cutting out . . .
GG is right, this sounds to me (and I've worked in electronics since 1984 and currently work for JVCKenwood) like you have either a bad amp (It happens) or you have a bad load on the amp - is there ANY chance that you have one or more speakers not working or VERY low volume (this would indicate that maybe one side of the line feeding those speakers is coming electrically close to ground or the voice coil of one speaker has a shorted turn).
I'm sorry, but it may be hard to get to the bottom of this one! I actually have a spare OEM amp here I could send you, it was pulled from a car and given to me but I am going to go all JVC with my system (since I can get free stuff from our marketing department). You could swap the amp, if THIS amp does the same thing, then you have a speaker/wiring issue. If this amp works fine, then just throw yours away!!! That's as good as I can do. |
Re: Issue with OEM radio sound cutting out . . .
Maybe set the balance to either full left or right, and see if it fails, then set it the other side and see if it fails,
my guesses if never fails when only on 1 side then it is a current/heat issue with amp if fails on both sides, still probably amp or amp wiring (or maybe a sub, are the dual voice coils used as l/r in each one?) if fails only on one side, that at least narrows it down to ½ the wiring or speakers. |
Re: Issue with OEM radio sound cutting out . . .
Had similar problems as reported on this thread -- radio working but intermittent sound. Tip: if you are searching ebay for a replacement amp search for a Jeep Infinity Amp as they used the same amp as the Crossfire in older Jeep models. Only difference are the mounting brackets which can be changed easily. Crossfire Infinity Amps on ebay run $300 and I picked up a Jeep Infinity Amp for $65.
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Re: Issue with OEM radio sound cutting out . . .
Originally Posted by Gregm
(Post 845970)
Had similar problems as reported on this thread -- radio working but intermittent sound. Tip: if you are searching ebay for a replacement amp search for a Jeep Infinity Amp as they used the same amp as the Crossfire in older Jeep models. Only difference are the mounting brackets which can be changed easily. Crossfire Infinity Amps on ebay run $300 and I picked up a Jeep Infinity Amp for $65.
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Re: Issue with OEM radio sound cutting out . . .
Here is a link that should help
Infinity Amplifier Jeep Grand Cherokee 99 02 WJ | eBay |
Re: Issue with OEM radio sound cutting out . . .
Originally Posted by Gregm
(Post 845975)
Here is a link that should help
Infinity Amplifier Jeep Grand Cherokee 99 02 WJ | eBay |
Re: Issue with OEM radio sound cutting out . . .
interesting when looking up the p/n on the ebay auction.. notice the "fits" section..
AMPLIFIER. Power Amplifier. Radio made by Chrysler. #56038407AG |
Re: Issue with OEM radio sound cutting out . . .
Originally Posted by Mrmiata
(Post 845981)
interesting when looking up the p/n on the ebay auction.. notice the "fits" section..
AMPLIFIER. Power Amplifier. Radio made by Chrysler. #56038407AG Geez, You Save$ 412.50 (22%) |
Re: Issue with OEM radio sound cutting out . . .
Originally Posted by Mrmiata
(Post 845981)
interesting when looking up the p/n on the ebay auction.. notice the "fits" section..
AMPLIFIER. Power Amplifier. Radio made by Chrysler. #56038407AG |
Re: Issue with OEM radio sound cutting out . . .
You can buy an entire totaled Crossfire with a good amplifier at auction for less than that !
Your Price $ 1462.50 |
Re: Issue with OEM radio sound cutting out . . .
I went to a u-pull-it junkyard today and saw 3 of these in Jeep Grand Cherokees.
First one I saw, I grabbed, it was from a 1999 and then I found another in a 1999, then a 2002. I only took the one from the 2002, and a length of harness so I have spare plugs and wires to mess with. The part numbers I saw were On the 1999s, 56038407AD & 36670 On the 2002 56038407AF & 36670C https://www.crossfireforum.org/forum...side-90379.jpg https://www.crossfireforum.org/forum...-end-90378.jpg If someone else has a need for one of these, I could grab one if they are still there next time I go. |
Re: Issue with OEM radio sound cutting out . . .
Well looks like I may be able to rain on everyone's parade. I Just tried the amp in my car, and no sound, and it is a different size. It is noticeably longer. I will check it out more later today/tomorrow, and take comparison pictures.
The shape is similar, but swapped end for end, and the brackets are different. The connectors are the same and plug right in. I got 2 of these, so if I happen to have a dead one, I will try both. |
Re: Issue with OEM radio sound cutting out . . .
Originally Posted by Gregm
(Post 845970)
Had similar problems as reported on this thread -- radio working but intermittent sound. Tip: if you are searching ebay for a replacement amp search for a Jeep Infinity Amp as they used the same amp as the Crossfire in older Jeep models. Only difference are the mounting brackets which can be changed easily. Crossfire Infinity Amps on ebay run $300 and I picked up a Jeep Infinity Amp for $65.
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Re: Issue with OEM radio sound cutting out . . .
Originally Posted by mariontr
(Post 983374)
I know this is an old thread but did it work using the jeep amp for the crossfire amp?
And with a little re-wiring, the new JVC and Kenwood (as well as others) amps are easily adapted to our cars; and their prices are attractive. One need only get the manual to our car out and compare to the diagrams that come with the new amp and off you go. There are three threads in the top of this part of the form ("STicky Threads") that give additional help in upgrading the system to four channels. It is really not that hard and the new stuff on the market is really good, if you stay away from the super-cheap products. |
Re: Issue with OEM radio sound cutting out . . .
Originally Posted by mariontr
(Post 983374)
I know this is an old thread but did it work using the jeep amp for the crossfire amp?
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Re: Issue with OEM radio sound cutting out . . .
pizzaguy and Red Dog, thanks for the response. Red Dog I may take you up on your offer, I'll email you separately. The only problem that I have encountered since the wet carpet after drain got plugged is the rear speakers no longer play, front works fine.
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Re: Issue with OEM radio sound cutting out . . .
Originally Posted by mariontr
(Post 983417)
pizzaguy and Red Dog, thanks for the response. Red Dog I may take you up on your offer, I'll email you separately. The only problem that I have encountered since the wet carpet after drain got plugged is the rear speakers no longer play, front works fine.
I have at least five OEM amlifiers available. When you email me please include photo of your OEM amplifier showing the part number . . . So I can match it up with one that I have . . . https://cimg1.ibsrv.net/gimg/www.cro...fad2d8c04b.jpg |
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