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Old 09-05-2004, 04:32 PM   #1 (permalink)
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Sorry if this has been discussed but I couldn't get any good search results and its raining way to hard to go outside and pull the unit and follow the wires myself.

I'm looking to add a new head unit to my 92 325i 4dr. My question is does this car have an external amp from the factory? If so where is it located? If it has one I'd probably end up bypassing it for now because I plan on buying a HU with high RMS wattage or add a decent external amp at a later date.

Also does anyone know where the speaker crossovers are located?

Thanks

EDIT:

Okay, rain let up and I was able to locate the factory amp behind the panel on the left hand side of the trunk. I didnt do to much searching but it seems that all of the speakers get their own signal from the amp and there are no crossovers? I really didn't want to have to rewire everything but now it looks like I might have to. Is there any easy way to run all factory speakers from the internal amplifier on the aftermarket HU? (without adding crossovers).
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Old 09-06-2004, 12:26 AM   #2 (permalink)
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Im sure a search for crossovers would yeild the desired results for the other qs too

Yes, you have an amp. its in the trunk. Driver's side. behind the carpet. integeral crossovers. As far as I know, there is no way to ad power to ALL speakers without using an outboard amp and/or rewireing.
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Old 09-09-2004, 04:10 PM   #3 (permalink)
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red,

The trunk-located amp takes a high-level input from the head unit so you could just install your new head and continue using the trunk-mounted amp and speakers as they are. As you've probably already discovered, the amp in the trunk has built-in crossovers. You could bypass the amp in the trunk and use the power from your head unit but there's no point in doing that unless you are also replacing the speakers.

Pinouts: http://www.unofficialbmw.com/e36/stereo/e3...reo_pinouts.gif
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