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Old 11-08-2004, 02:50 AM   #1 (permalink)
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hey wut up guys just got my 04 325 ci and wanted to wire in my sub and amp...i was wondering if there were any guides or nething neone has or any pointers. i was thinking about just switching the stock amp out with my own and then i have a seperate amp for the subs but i didnt know how to hook up the sub to the head unit? is it already prewired in the trunk? ne help would be coo thanx
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Old 11-12-2004, 12:14 AM   #2 (permalink)
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The oem wiring would not be beefy enough to support a large aftermarket set up consisting of a multi amp system. You would need to run new power, ground, add a distribution block, and would need a line level converter to convert to RCA's for an aftermarket amp. If using oem speakers with an aftermarket amp, make sure your new amp has a decent crossover network. If replacing be sure to purchase seperates with supplied crossovers as BMW's lend themselves well to such a system.

If none of this makes sense, take your ride to a reputable install shop. Not trying to be a jerk by any means, I just deal with eager folks with a little less know-how than necessary everyday, and it almost always spells blown amp, sub, or much worse electical damage to the auto.
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Old 11-12-2004, 02:14 AM   #3 (permalink)
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Originally posted by erandhawa@Nov 7 2004, 11:50 PM
hey wut up guys just got my 04 325 ci and wanted to wire in my sub and amp...i was wondering if there were any guides or nething neone has or any pointers. i was thinking about just switching the stock amp out with my own and then i have a seperate amp for the subs but i didnt know how to hook up the sub to the head unit? is it already prewired in the trunk? ne help would be coo thanx
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thanks man what guage wiring do you recommend?...in all honestly i dont want to mess with the system myself i think ia m going to take it to an install shop but want to make sure i know what they're doing because have the time they dont do nethin and say they did a lot. and also i was wondering if you would know what the power of the stock amp is because i am only gonna put 200 watt amp to the highs the other amp is a 800 for the subs. thanks for helping out man its greatly appreciated.
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Old 11-19-2004, 01:08 AM   #4 (permalink)
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Most amp kits rated for 600Watts or more (or cost $70+/kit) should come with ample wiring 4AGU power to distribution block 8AGU coming out, etc., etc.

Leave the oem amp, unless your replacing all the speakers
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