E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Did I blow my sub?



Reply
 
Thread Tools Search this Thread
      12-28-2009, 08:35 PM   #1
Gyuri87
New Member
 
Drives: 2006 BMW 325XI
Join Date: Dec 2009
Location: Montreal

Posts: 6
iTrader: (0)

Did I blow my sub?

I was driving my car earlier and I noticed a great loss of bass. All speakers work the same so I don't think it is any of them but perhaps the sub. Would anyone have an idea? Where's the sub in an e90 BMW 325XI Sedan anyway? I must admit I've just recently got it.

Thanks
Gyuri87 is offline  
0
Reply With Quote
      12-28-2009, 09:08 PM   #2
Heinzftw
Major
 
Heinzftw's Avatar
 
Drives: 2000 Civic+2008 Accord
Join Date: Sep 2008
Location: San Jose, Cali

Posts: 1,202
iTrader: (0)

Wrong section
__________________
Quote:
Originally Posted by Javi335 View Post
saw you comment and i'd lay on my bed and cry, then i put some Yulio Iglesias music, no more problem.


-█--------█-
Heinzftw is offline  
0
Reply With Quote
      12-28-2009, 09:13 PM   #3
kyleb350
Brigadier General
 
kyleb350's Avatar
 
Drives: F30 335i M-Sport
Join Date: Jun 2008
Location: LoMbard, IL

Posts: 4,179
iTrader: (6)

Did you check if you had the bass turned down all the way by accident?
kyleb350 is offline   United_States
0
Reply With Quote
      12-28-2009, 09:39 PM   #4
Gyuri87
New Member
 
Drives: 2006 BMW 325XI
Join Date: Dec 2009
Location: Montreal

Posts: 6
iTrader: (0)

Quote:
Originally Posted by kyleb350 View Post
Did you check if you had the bass turned down all the way by accident?
I did... I was hoping myself that it was only bad configuration but no... I might have listened to music a little too loud.
Gyuri87 is offline  
0
Reply With Quote
      12-28-2009, 11:22 PM   #5
Gyuri87
New Member
 
Drives: 2006 BMW 325XI
Join Date: Dec 2009
Location: Montreal

Posts: 6
iTrader: (0)

Anyone? I really need to get this cleared. I want to know exactly what it is so I can get it fixed asap.
Gyuri87 is offline  
0
Reply With Quote
      12-29-2009, 12:12 AM   #6
kaigoss69
Brigadier General
 
kaigoss69's Avatar
 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

Posts: 3,029
iTrader: (5)

Quote:
Originally Posted by Gyuri87 View Post
Anyone? I really need to get this cleared. I want to know exactly what it is so I can get it fixed asap.
You have one sub under each front seat. Put your head down there to make sure absolutely no bass is being produced. If you hear nothing at a moderate volume level, the respective amp channels may be blown (a blown speaker would still produce "sound" so you would definitely hear that).
kaigoss69 is offline   United_States
0
Reply With Quote
      12-29-2009, 02:38 AM   #7
Gyuri87
New Member
 
Drives: 2006 BMW 325XI
Join Date: Dec 2009
Location: Montreal

Posts: 6
iTrader: (0)

Quote:
Originally Posted by kaigoss69 View Post
You have one sub under each front seat. Put your head down there to make sure absolutely no bass is being produced. If you hear nothing at a moderate volume level, the respective amp channels may be blown (a blown speaker would still produce "sound" so you would definitely hear that).
Is there anyway I can get a fully detailed description of the sound system? I'm not even sure how many speakers there are in it. I counted seven if that pod in the middle dash is covering up a speaker. By the way, thanks for the tip, I'll check out those subs later.
Gyuri87 is offline  
0
Reply With Quote
      12-29-2009, 03:01 AM   #8
Ron1n
Speed Demon
 
Ron1n's Avatar
 
Drives: '10 335d E90
Join Date: Oct 2009
Location: The 858

Posts: 3,248
iTrader: (4)

Garage List
2010 335d  [5.00]
This should help
Take a look at this as well
__________________
Ron1n is offline   United_States
0
Reply With Quote
      12-29-2009, 12:41 PM   #9
Spec 1
Faster in the Corners
 
Spec 1's Avatar
 
Drives: '91 E30, '05 ZX6-R, '06 300C
Join Date: Jul 2008
Location: Portland, OR

Posts: 1,068
iTrader: (0)

Sounds more like a shortage of your amp, not your sub. Blown speakers (subs included) still work and produce noise, they just don't produce quality noise and become static-y. I would check the connections and fuse of your amp.
__________________
'91 M42 E30 - All sorts of goodies.
Spec 1 is offline   United_States
0
Reply With Quote
      12-29-2009, 10:14 PM   #10
JayKay335i
Banned
 
Drives: ///M323 DCT
Join Date: Apr 2009
Location: North Dakota; its best DUHHHHHH

Posts: 5,047
iTrader: (1)

+1

Most likely the amp.
JayKay335i is offline   Egypt
0
Reply With Quote
      12-30-2009, 08:45 PM   #11
Gyuri87
New Member
 
Drives: 2006 BMW 325XI
Join Date: Dec 2009
Location: Montreal

Posts: 6
iTrader: (0)

Quote:
Originally Posted by JayKay335i View Post
+1

Most likely the amp.
Really, I think it's that speaker in the dash. It feels very weak. Is it possible? If so, how hard is to take that out? Does the dash need to be removed? Honestly I don't know much when it comes to car audio and it's driving me nuts. Where's that amp anyway?

Thanks
Gyuri87 is offline  
0
Reply With Quote
      12-31-2009, 01:16 AM   #12
Gavin@MMW
Brigadier General
 
Gavin@MMW's Avatar
 
Drives: MMW Supercharged E90 328i
Join Date: Nov 2009
Location: 818/805

Posts: 3,880
iTrader: (18)

Quote:
Originally Posted by Gyuri87 View Post
Really, I think it's that speaker in the dash. It feels very weak. Is it possible? If so, how hard is to take that out? Does the dash need to be removed? Honestly I don't know much when it comes to car audio and it's driving me nuts. Where's that amp anyway?

Thanks
the dash speaker is a center channel that wouldn't produce bass...
Gavin@MMW is offline   United_States
0
Reply With Quote
      01-13-2010, 03:08 AM   #13
Gyuri87
New Member
 
Drives: 2006 BMW 325XI
Join Date: Dec 2009
Location: Montreal

Posts: 6
iTrader: (0)

Well, I still haven't figured it out. I went to BMW and they said it sounds fine although I know it does not. I'm guessing it's the subs. Would anyone know what brand and model they are?

Quote:
Originally Posted by Spec 1 View Post
Sounds more like a shortage of your amp, not your sub. Blown speakers (subs included) still work and produce noise, they just don't produce quality noise and become static-y. I would check the connections and fuse of your amp.
Where's that fuse?
Gyuri87 is offline  
0
Reply With Quote
      01-15-2010, 10:36 PM   #14
Ron1n
Speed Demon
 
Ron1n's Avatar
 
Drives: '10 335d E90
Join Date: Oct 2009
Location: The 858

Posts: 3,248
iTrader: (4)

Garage List
2010 335d  [5.00]
Quote:
Originally Posted by Gyuri87 View Post
Well, I still haven't figured it out. I went to BMW and they said it sounds fine although I know it does not. I'm guessing it's the subs. Would anyone know what brand and model they are?



Where's that fuse?
I'm interested as well, actually. Noticed a distinct loss of bass in my car today as well...it made me sad.
__________________
Ron1n is offline   United_States
0
Reply With Quote
      01-16-2010, 10:02 AM   #15
kaigoss69
Brigadier General
 
kaigoss69's Avatar
 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

Posts: 3,029
iTrader: (5)

Quote:
Originally Posted by Gyuri87 View Post
Well, I still haven't figured it out. I went to BMW and they said it sounds fine although I know it does not. I'm guessing it's the subs. Would anyone know what brand and model they are?
READ MY LIPS: IT IS NOT THE SUBS!
kaigoss69 is offline   United_States
0
Reply With Quote
      01-16-2010, 09:25 PM   #16
amlebede
Guest
 
amlebede's Avatar
 
Drives: 2006 BMW 330i
Join Date: Apr 2009
Location: Chapel Hill, NC

Posts: 612
iTrader: (0)

Send a message via AIM to amlebede Send a message via Skype™ to amlebede
It might be a lot of things: fuse, subwoofer, amp, preamp, your ear adapting to bass so you don't hear it too loud anymore, etc..
Difficult to answer.
amlebede is offline   United_States
0
Reply With Quote
      01-20-2010, 09:55 AM   #17
Ron1n
Speed Demon
 
Ron1n's Avatar
 
Drives: '10 335d E90
Join Date: Oct 2009
Location: The 858

Posts: 3,248
iTrader: (4)

Garage List
2010 335d  [5.00]
Quote:
Originally Posted by kaigoss69 View Post
READ MY LIPS: IT IS NOT THE SUBS!
So far, all you suggested is to shove your head down there. Let's say the respective amp chans are blown...what do you do then?

Try posting a bit more information than a simple statement, if you intend to be helpful.
__________________
Ron1n is offline   United_States
0
Reply With Quote
      01-20-2010, 11:27 AM   #18
kaigoss69
Brigadier General
 
kaigoss69's Avatar
 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

Posts: 3,029
iTrader: (5)

Quote:
Originally Posted by Ron1n View Post
So far, all you suggested is to shove your head down there. Let's say the respective amp chans are blown...what do you do then?

Try posting a bit more information than a simple statement, if you intend to be helpful.
It has been stated at least twice that speakers still produce sound after they are blown. This distorted and/or mechanical sound of a blown speaker is quite obvious. So if the subs were blown, the OP would still hear SOMETHING coming from under the seats.

This leaves us with two possibilities:

1. The OP is deaf in the frequencies below 150Hz
2. The respective amp channels are blown

I can't believe I have to point this out but the obvious proof of the amp not working would be to remove one of the grilles, crank up the volume and the bass setting, and see if there is any movement of the cone. If it moves, the OP has a problem with his hearing, and if it doesn't, the amp is blown.
kaigoss69 is offline   United_States
0
Reply With Quote
      01-20-2010, 11:43 AM   #19
vladster
Private First Class
 
vladster's Avatar
 
Drives: BMW 335 ci
Join Date: Mar 2007
Location: Slovenia

Posts: 190
iTrader: (0)

It happened to me once. By accident I had may fader to Front all the way and it also reduces bass.

1st check your settings.
2nd check fuses for the amp
3rd check your sub
......


That is how I would do it.
__________________
vladster is offline   Slovenia
0
Reply With Quote
      01-20-2010, 11:58 AM   #20
Ron1n
Speed Demon
 
Ron1n's Avatar
 
Drives: '10 335d E90
Join Date: Oct 2009
Location: The 858

Posts: 3,248
iTrader: (4)

Garage List
2010 335d  [5.00]
Quote:
Originally Posted by kaigoss69 View Post
It has been stated at least twice that speakers still produce sound after they are blown. This distorted and/or mechanical sound of a blown speaker is quite obvious. So if the subs were blown, the OP would still hear SOMETHING coming from under the seats.

This leaves us with two possibilities:

1. The OP is deaf in the frequencies below 150Hz
2. The respective amp channels are blown

I can't believe I have to point this out but the obvious proof of the amp not working would be to remove one of the grilles, crank up the volume and the bass setting, and see if there is any movement of the cone. If it moves, the OP has a problem with his hearing, and if it doesn't, the amp is blown.
Fair enough.

Let's assume it's the amp fuse. Do you happen to know where that resides in an E90 LCI? Is it in the fuse box? If so, are you aware of which fuse it is?
__________________
Ron1n is offline   United_States
0
Reply With Quote
      01-20-2010, 12:51 PM   #21
kaigoss69
Brigadier General
 
kaigoss69's Avatar
 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

Posts: 3,029
iTrader: (5)

Quote:
Originally Posted by Ron1n View Post
Fair enough.

Let's assume it's the amp fuse. Do you happen to know where that resides in an E90 LCI? Is it in the fuse box? If so, are you aware of which fuse it is?
I would expect the L7 amp to have only one power supply so there can be only one main fuse. Doesn't really matter where the fuse is located though, since a blown fuse would mean ZERO music, from any of the speakers.
kaigoss69 is offline   United_States
0
Reply With Quote
      01-20-2010, 12:55 PM   #22
kaigoss69
Brigadier General
 
kaigoss69's Avatar
 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

Posts: 3,029
iTrader: (5)

Quote:
Originally Posted by vladster View Post
It happened to me once. By accident I had may fader to Front all the way and it also reduces bass.
Not in my car and I have Logic 7, like the OP.
kaigoss69 is offline   United_States
0
Reply With Quote
Reply

Bookmarks

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
Forum Jump


All times are GMT -5. The time now is 01:22 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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