BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > subwoofer replacement advice

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      09-02-2011, 10:58 AM   #1
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Location: Calgary, AB

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2008 335xi  [5.00]
subwoofer replacement advice

I have a 2008 E90 335xi with Logic7 that I have been happy with although the low bass is weak. My wife left a leaky water bottle under the passenger seat for a few days and the sub-woofer is damaged (sounds like a dragon fly is trying to escape).

I called my friendly local BMW dealer and was told that I need 65139143136 which is C$658! Tischer has it for about half that but they want a fortune to ship to Canada.

So I am looking for better and/or cheaper options. I did a bit of research here and it seems the Earthquake SWS-8X is well regarded and is (close to?) a drop in replacement. Can I change just the speakers without changing the amp? I think the factory speaker is 2 ohm while the SWS-8X is 4 ohm.

If I need to change the amp, how hard is that? I see in the sticky wiring diagram that the connection between the head unit and the factory amp is fiber optic. Is that BMW/HK proprietary or can that easily connect to other amps?


EDIT: I just found out that there is an SWS-8XI which is 2 ohms

Last edited by canderson; 09-02-2011 at 11:20 AM. Reason: updated info
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      09-20-2011, 12:06 AM   #2
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Drives: 2007 335i
Join Date: Jun 2009
Location: Jacksonville, FL

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also interested in this info. anyone have any inputs?
E92 335i
Engine: RB//SPEC 2+ SMFW//PTF tune//AA FMIC//AP DP//BMS DCI//BMS CDV Mod//AA BOV//AE Exhaust//
Body: MTEC body w/ M3 side skirts/M3 style CF hood/LCI tails/CSL trunk lid/OSS AE/M3 F/R control arms/Stoptech Cross drilled rotors & steel braided brake lines
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