Adding Subwoofer to basic e90 system

eliotn · 07-09-2010, 05:15 AM

Hi folks,

My E90 SE came with basic audio system. There is no factory amp, only CD changer. Also I can not see any amp cables mentioned lots of time in this forum.

What is the easiest way to install subwoofer in the trunk ? I was hoping to take signal from rear speakers via adapter, use REM from CD changer and thats about it. I can not see how can I get to the rear speakers from the trunk ?

Help please...

Technic · 07-09-2010, 07:47 AM

Quote:

Originally Posted by eliotn

Hi folks,

My E90 SE came with basic audio system. There is no factory amp, only CD changer. Also I can not see any amp cables mentioned lots of time in this forum.

What is the easiest way to install subwoofer in the trunk ? I was hoping to take signal from rear speakers via adapter, use REM from CD changer and thats about it. I can not see how can I get to the rear speakers from the trunk ?

Help please...

You need to tap the underseat woofers for bass... there is no bass from your rear speakers in the base system.

VP Electricity · 07-09-2010, 11:29 AM

Yes, tapping the rears would be really, really unrewarding.

FoShizzle · 07-09-2010, 05:22 PM

When I did mine, I picked up a signal somewhere in the trunk - worked perfectly. (don't remember, its been so long) Is that because i have the upgraded sound system and the OP doesn't?

Jamesbondniuk · 08-20-2010, 10:34 AM

Quote:

Originally Posted by Technic

You need to tap the underseat woofers for bass... there is no bass from your rear speakers in the base system.

Hi, I am also going to install a sub and amp on the E90 saloon w/o iDrive.
Q1. Will I just vibration if I put a 14" sub in the boot - powered with own amp (no fold down seats).
Q2. Where's best location to tap-in to the underseat woofers, what colour are the wires?
Q3. Best location for a remote wire?
As eliotn, I dont have factory amp - doh!

Just sold my Jet Black E46 and got me this E90 baby in Graphite

!

Thanks

IMissMySTi · 08-27-2010, 01:43 AM

Quote:

Originally Posted by Jamesbondniuk

Q2. Where's best location to tap-in to the underseat woofers, what colour are the wires?

REAR LEFT WOOFER
Yellow/Red + pin 14
Yellow/Brown – pin 4

REAR RIGHT WOOFER
Blue/Green + pin 13
Blue/Brown – pin 3

They are easy to spot in the harness, they are the 4 bigger wires. Hook them up to a 2-channel line output convertor and you're good to go.
From: http://www.e90post.com/forums/showth...t=52193&page=2
http://www.e90post.com/forums/showthread.php?t=138949

Quote:

Originally Posted by Jamesbondniuk

Q3. Best location for a remote wire?

My wiring harness had a tiny black wire which I found out was the stock amp's remote wire. I just spliced into that. Worked perfectly.
Eliotn: Since you don't have factory amp, you could tap into cigarette lighter wiring, I have heard of other people on hear doing that.

This thread may help too
http://www.e90post.com/forums/showthread.php?t=163804
It goes over how to do SWS-8 install but the amp info included helps.

rightaway · 06-16-2019, 09:22 PM

What subwoofer and amp is everyone running? I’m have older 12 alpine type with pdx5 amp. 200-300 rms and since my seat doesn’t fold down or have a pass through I can barely hear it. I have a small custom made corner box that I bought off here a few years ago. It’s about 1 cubic foot sealed. What’s should I be looking for?

mweisdorfer · 06-17-2019, 09:40 AM

Quote:

Originally Posted by rightaway

What subwoofer and amp is everyone running? I’m have older 12 alpine type with pdx5 amp. 200-300 rms and since my seat doesn’t fold down or have a pass through I can barely hear it. I have a small custom made corner box that I bought off here a few years ago. It’s about 1 cubic foot sealed. What’s should I be looking for?

What's the RMS of the Alpine Sub?

rightaway · 06-17-2019, 08:50 PM

Quote:

Originally Posted by mweisdorfer

What's the RMS of the Alpine Sub?

300 rms

07-09-2010, 05:15 AM	#1
eliotn New Member 4 Rep 15 Posts Drives: 320D E92 M Sport Join Date: Jul 2010 Location: Bristol iTrader: (0)	Adding Subwoofer to basic e90 system Hi folks, My E90 SE came with basic audio system. There is no factory amp, only CD changer. Also I can not see any amp cables mentioned lots of time in this forum. What is the easiest way to install subwoofer in the trunk ? I was hoping to take signal from rear speakers via adapter, use REM from CD changer and thats about it. I can not see how can I get to the rear speakers from the trunk ? Help please...
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07-09-2010, 11:29 AM	#3
VP Electricity Brigadier General 289 Rep 3,201 Posts Drives: F34 xDrive Join Date: Jan 2008 Location: portland oregon iTrader: (3)	Yes, tapping the rears would be really, really unrewarding.
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07-09-2010, 05:22 PM	#4
FoShizzle aka Mike 106 Rep 1,395 Posts Drives: AW E92 335is Join Date: Jun 2008 Location: LA/Ventura, CA iTrader: (11)	When I did mine, I picked up a signal somewhere in the trunk - worked perfectly. (don't remember, its been so long) Is that because i have the upgraded sound system and the OP doesn't?
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06-16-2019, 09:22 PM	#7
rightaway First Lieutenant 13 Rep 358 Posts Drives: 2009 BMW 328i Join Date: Apr 2013 Location: PA iTrader: (1)	What subwoofer and amp is everyone running? I’m have older 12 alpine type with pdx5 amp. 200-300 rms and since my seat doesn’t fold down or have a pass through I can barely hear it. I have a small custom made corner box that I bought off here a few years ago. It’s about 1 cubic foot sealed. What’s should I be looking for?
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