subwoofer replacement advice

canderson · 09-02-2011, 09:58 AM

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?

Thanks!

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

qubansailor · 09-19-2011, 11:06 PM

also interested in this info. anyone have any inputs?

09-02-2011, 09:58 AM	#1
canderson Cogito Ergo Zoom 12 Rep 64 Posts Drives: 2013 BMW M3, 2016 BMW X1 Join Date: Jul 2009 Location: Scottsdale AZ iTrader: (1) Garage List 2008 335xi [10.00]	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? Thanks! EDIT: I just found out that there is an SWS-8XI which is 2 ohms Last edited by canderson; 09-02-2011 at 10:20 AM.. Reason: updated info
	Appreciate 0 Tweet Quote

09-19-2011, 11:06 PM	#2
qubansailor Lieutenant 43 Rep 489 Posts Drives: 2007 335i Join Date: Jun 2009 Location: Jacksonville, FL iTrader: (4)	also interested in this info. anyone have any inputs? __________________ (SOLD) 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
	Appreciate 0 Quote