[Chrisguilday]

Originally Posted by ctuna

Every Speaker in a Hi Fi system is 2 ohms and
they are all crap . But not as crappy as the stock amp.
Hi Fi amp is 6 channels which means 6 sets of wires from the amp.
Please read the first 3 or 4 links it will be come clear.

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
http://www.e90post.com/forums/showth...1#post16679904
Base System Guide
http://www.e90post.com/forums/attach...5&d=1493273253

Download the Manual for the specifics on Bridging.

Jehnert XE 200 underseats are the most audiophile like speaker's for a midrange price.
Warm and accurate. (They are not lacking in bass accurate bass) They are not subwoofer's though
which are mostly unneeded for full range music.

don't waste your money on rear speakers.
Be prepared to tune the system.
You could go active on the front tweeters if you are willing
to run another pair of wires to the doors. (seprate channel for tweeters)
Do your homework on tuning a DSP at the Helix audio tech fisher website.

dsp
https://www.e90post.com/forums/showthread.php?t=1384218
https://www.e90post.com/forums/showthread.php?t=1383653
https://www.e90post.com/forums/showthread.php?t=1381697

If you bought is from Bimmertech they will have a stock tune or tunes.

From the Audiotech Fisher Website.
You can buy either the 86dsp or the BMW 7 directly from Audio Tech Fisher.
but they don't include tunes or whatever other add on's there are.
At least the tunning ability of the amp is not locked down from Bimmertech.

You are not doing your homework if Bavsound speakers are your first and only
consideration. There are many plug and play speaker kits for these now from
Jehnert , Focal , Match, MBQuart and more , and they will give you there specs and in the
case of door speaker actual physical crossovers between the tweeters and mid's

Both the amp/dsp's you are talking about are multi channel 8 and 7 I believe.

https://www.audiotec-fischer.de/en/m...fiers/pp-86dsp

https://www.ebay.com/itm/23362374350...Cclp%3A2047675

Match speaker set for all the fronts around 500 bucks on ebay.

Pretty sure you would have to modify the Harness to Bridge the under seats .

Amazing information. Thank you. I’ve talked to you previously regarding the bad amp in my car, your a great asset to this forum.

I did do research regarding the speakers, I guess it just wasn’t good research. A lot of threads pointed me in the direction of the bavsound speakers. I got all the speakers minus the underseat mids. It was $450.

Are the bavsound speakers not that great? How much worst are they compared to something else of them similar cost? I could return them but I’d rather not because their already installed.

When I installed them it didn’t change the sound quality very much because my amp is bad. The mids and highs are better, but the sound quality is so bad that it’s unpleasant to play music. There are hardly any low notes, just mainly fuzz. Once the amp arrives I’m sure it’s going to make a significant difference.

I’m going to take some time tonight and read through your links.