[bmwfan96]

Hi, so I stumbled upon some hi fi speakers for really really cheap and had to buy them but they come without the amplifier. Mu car has the base system without any amplifier ( no tweeters on the front doors ). Will changing the base speaker with the bigger hi fi ones fry my head unit? Is it safe to change every speaker or leave the subwoofers alone?

[ctuna]

Not likely to work well as the front door speakers and floor speakers are wired
in parallel and all the Hi Fi speakers are listed as 2 ohm .
Also the Hi Fi speakers are not all that good especailly the floors .
The Hi Fi doors can sound better with some amplification but the He Fi floors
are muddy with amplification .

[bmwfan96]

Thank you for the info, do you mind telling
me why the parralel wiring of the speakers leads to worse sound?

[ctuna]

Because it's a bigger load per channel and with Head Unit power you are not starting out with much.
Another point is if you are changing out the underseat's the base system speakers are glued into the enclosures
but the Hi Fi's are screwed in .


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/attach...1&d=1209780865
http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/
http://technicpnp.com/menuDiagrams/d...e90_92_93.html
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...3&d=1169133185
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/showthread.php?t=641323
http://www.e90post.com/forums/attach...4&d=1278871872
http://www.e90post.com/forums/showthread.php?t=343673
https://www.bimmerfest.com/threads/e...n-752.1275694/

base system wiring pre/post 3/09
https://www.google.com/url?sa=t&rct=...tDpLJPcGkw_ui_
Base System Guide
http://www.e90post.com/forums/attach...5&d=1493273253

Read these.
The first three especially .
Also the audio sticky build at the top of the page.