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Discussion Starter #1 (Edited)
I have a base 2011 328i with the Hi-Fi stereo. Can I add the under seat sub woofers to my car? Is the wiring existing under the seats to add them?
Thanks
 

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subwoofer threads
http://www.e90post.com/forums/showpost.php?p=13814862&postcount=66
http://www.e90post.com/forums/showthread.php?t=64582&highlight=Ultimate+Sub
http://www.e90post.com/forums/showthread.php?t=887456&highlight=subwoofer

Base Stereo info (the ampless system)
http://www.e90post.com/forums/showthread.php?t=461636&highlight=graph

HI Fi upgrades
http://www.e90post.com/forums/showthread.php?t=567325&highlight=level
http://www.m3post.com/forums/showthread.php?t=540446
http://www.e90post.com/forums/showthread.php?t=479258&highlight=technic
http://www.e90post.com/forums/showthread.php?t=532585
http://www.e90post.com/forums/showthread.php?t=833581
http://www.m3post.com/forums/showthread.php?t=443043
http://www.e90post.com/forums/showthread.php?t=324214
https://www.bimmer-tech.net/blog/item/39-harman-kardon-vs-hi-fi-vs-standard-audio-for-bmw
http://www.e90post.com/forums/showthread.php?t=833581&highlight=level+3


Base System Upgrades
http://www.e90post.com/forums/showthread.php?t=445266
http://www.1addicts.com/forums/showthread.php?t=634957
http://f30.bimmerpost.com/forums/showthread.php?t=1003810
http://www.e90post.com/forums/showthread.php?t=822366
http://www.e90post.com/forums/showthread.php?t=581379
http://www.e90post.com/forums/showthread.php?t=451941
http://www.e90post.com/forums/showthread.php?t=540954
http://www.e90post.com/forums/showthread.php?t=545186&highlight=Dotech
http://www.e90post.com/forums/showthread.php?t=495855
http://www.e90post.com/forums/showthread.php?t=494299
http://www.diymobileaudio.com/forum...mw-335d-install-mosconi-gladen-morel-jbl.html
http://www.e90post.com/forums/showthread.php?t=157820&highlight=amp+upgrade
https://www.bimmerfest.com/forums/showthread.php?t=550771
http://www.e90post.com/forums/showthread.php?p=16679904&posted=1#post16679904
http://www.e90post.com/forums/attachment.php?attachmentid=1094891&d=1411521234
http://www.e90post.com/forums/showthread.php?t=1378833
base system wiring pre/post 3/09
http://www.e90post.com/forums/attachment.php?attachmentid=1094891&d=1411521234
https://www.google.com/url?sa=t&rct...entid=616552&usg=AOvVaw1Z7YCHDLtDpLJPcGkw_ui_
http://www.monsteraudiodesign.co.uk/
http://www.e90post.com/forums/showthread.php?p=16679904&posted=1#post16679904


BMW stereo types
http://www.e90post.com/forums/showthread.php?t=352586
http://www.e90post.com/forums/attachment.php?attachmentid=350502&d=1266451970
http://www.e90post.com/forums/attachment.php?attachmentid=334282&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/attachment.php?attachmentid=151088&stc=1&d=1209780605
http://www.e90post.com/forums/attachment.php?attachmentid=151087&stc=1&d=1209780865
http://www.e90post.com/forums/showthread.php?t=641323
http://bmwcoders.com/forum/3-er-8/bmw-e90-e91-e92-e93-291/
http://technicpnp.com/menuDiagrams/diagram_template_e90_92_93.html
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attachment.php?attachmentid=55323&d=1169133185
http://www.e90post.com/forums/attachment.php?attachmentid=406534&d=1278871872
 

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Discussion Starter #3
Thanks for the reply. I do have speakers under the front seats. System just sounds like crap.
 

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If I have learned one thing on this forum over the years, it's that ctuna has 2-click access to every relevant stereo link possible :bigpimp:
 

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Lost but making good time
'11 335xi; '03 330Ci
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If I have learned one thing on this forum over the years, it's that ctuna has 2-click access to every relevant stereo link possible :bigpimp:
...and a few more besides. :thumbup:
 

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Big subwoofers + crap system = big bass + crap system
in which all you hear is the bass but that may be what you want.
 
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