E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > E92 Sound system FLAW- HELP.



Reply
 
Thread Tools Search this Thread
      07-06-2011, 06:10 AM   #1
$hah$
Second Lieutenant
$hah$'s Avatar
United_States
102
Rep
299
Posts

Drives: F80 MG/MT/ZCP & 2023 X7
Join Date: Nov 2010
Location: Los Angeles

iTrader: (0)

Garage List
2023 BMW X7  [0.00]
2018 BMW M3  [0.00]
Thumbs down E92 Sound system FLAW- HELP.

Anyone else having issues in their 2010 E92 328 cpe sound system being under powered and causing the speakers to have a crackling/tearing sound when it is turned up and windows down. I have gone to SA couple times and they can't diagnose the problem. Advice? Greatly Appreciated.
Appreciate 0
      07-06-2011, 06:56 AM   #2
Technic
Lieutenant General
Technic's Avatar
2258
Rep
12,985
Posts

Drives: 2021 i3S, 2024 i4 M50
Join Date: Apr 2005
Location: Florida

iTrader: (18)

Quote:
Originally Posted by SZ328i View Post
Anyone else having issues in their 2010 E92 328 cpe sound system being under powered and causing the speakers to have a crackling/tearing sound when it is turned up and windows down. I have gone to SA couple times and they can't diagnose the problem. Advice? Greatly Appreciated.
Search for "Stereo 6-speaker system". That's the way it is designed to work. Seriously.
Appreciate 0
      07-06-2011, 04:21 PM   #3
VP Electricity
Brigadier General
VP Electricity's Avatar
United_States
287
Rep
3,201
Posts

Drives: F34 xDrive
Join Date: Jan 2008
Location: portland oregon

iTrader: (3)

I guess I can't joke too much about your car having a terrible stereo - although it's a frequent topic and you should have found it without posting - but your SA and your service department should have explained this to you. I'm more critical of them, since you did what you should do, go to the BMW service department.

Quote:
Stereo
A US-model Stereo system can be easily identified by looking at the top of the
door panel, inboard of the side mirrors. If there are no tweeter grilles present
there, the vehicle has Stereo audio.

The Stereo system consists of:

- A head unit coded to Stereo mode, providing speaker-level analog signals

- Front door 4” cone speakers using the standard BMW 3-bolt frame

- Rear 4” cone speakers (rear deck, doors, or sides, depending on body)

- Underseat 6” cone speakers with 8” frames, inverted-mounted in 8”
enclosures

These speakers are powered by a 4-channel amplifier IC inside the head unit.

The iDrive head unit has slightly more power than the Professional CD player,
but both are limited in performance and can be thought of as having similar
output as an aftermarket CD player.

To compensate for the lack of tweeters and of larger 8” subwoofers, the head
unit front speaker signal is heavily boosted in the bass and treble. This
equalization curve is fixed at all volume settings.

The front 4” door speakers and the underseat 6” speakers are both connected to
the front channels of the head unit output in parallel. The 4” rear speakers are
connected to the rear output channels of the head unit, and that signal is
crossover-filtered within the head unit with a roughly 150 Hz high-pass filter.
Appreciate 0
Reply

Bookmarks

Tags
328, amplifier, e92, speakers, stereo

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:24 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST