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Discussion Starter #1
This car is definitley a project. Keep getting Trouble codes for the O2, the T/C light is on, the ABS light is on, gotta check fuses.

The stereo is a mess. Tried to pop in a cd and it just fell into a void LOL Sounds good except form the rear speakers I only hear low level bass coming out of them when i turn the fader to the rear. I'm familiar a bit with the monsoon amp as my friend had one and the rear speakers with the dual inputs, would there be any setting that would make the rears emulate a subwoofer? Or maybe the previous owner tried something like that? Or maybe they unplugged the speaker outs for the mid and hi's? Any other suggestions?
 

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Nobody have a clue as to why this would happen? My dad had a Grand AmGT with a monsoon but never encountered this. Unfortunately he's no longer with us, so I'm stuck. Fuse seems to be good. Connectors in tight on amp and speakers. If I bypass the amp the speakers will either get only bass or treble, which means having to get new speakers. As a student with a pizza delivery job, that falls behind the cat problem, which by the way has not happened again since.
 

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Fuse check good. I measured voltage on both sets of terminals so figure the amp is working. Hooked up a cheap speaker using both the bass and mid/hi connections and there is audio there, which means the highs/mids on the rear speakers are not working. I've heard of distorted sound from blown speakers on these, and losing bass, but not losing the hi/mids. It's a pain to remove these but will do so and see if there are any cut wires. Oherwise a new set of speakers when I can.
 

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Fuse check good. I measured voltage on both sets of terminals so figure the amp is working. Hooked up a cheap speaker using both the bass and mid/hi connections and there is audio there, which means the highs/mids on the rear speakers are not working. I've heard of distorted sound from blown speakers on these, and losing bass, but not losing the hi/mids. It's a pain to remove these but will do so and see if there are any cut wires. Oherwise a new set of speakers when I can.
If the mid/hi signals are adequately driving the test speaker, then I'd say the mid/hi speakers are blown. But you want to verify that. You will need to get a signal source - I use a battery operated radio with a patch cord plugged into the speaker/earphone output to drive the speaker being tested.

You should be able to do that test without removing the mid/hi speakers. Be sure the amp wires to them are disconnected when you hook up the patch cord - some amps can be damaged by back-driving them.

Doug

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