[Hartge]

Hi guys, firstly… what size subs can fitted under the front seats ?

and I believe I already have them fitted, just the stock ones.. but my question is can I use the wiring going to the subs to power an amp that will then run the new subs ??

Any help is much appreciated

Thanks

[ctuna]

You need to know which of the three system you have
to start with.

read these


BMW stereo types
http://www.e90post.com/forums/showthread.php?t=352586
http://www.e90post.com/forums/attach...2&d=1266451970
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/showthread.php?t=343673
http://www.e90post.com/forums/showthread.php?t=138949
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/showthread.php?t=641323
http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/
http://www.e90post.com/forums/attach...1&d=1209780865
electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...4&d=1278871872

Identify you system first then tell us what it is.

[Hartge]

thank you for this, much appreciated

[Hartge]

I have the base audio setup, but have already upgraded all the speakers with premium audio, but speakers only I have done

[ctuna]

Premium audio Huh is that a brand?
There are so many threads started here by guys wanting to upgrade
the base system. You need to be specific.

http://www.e90post.com/forums/showthread.php?t=1125051

Read links in entry 2 of the the above thread.