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      06-05-2010, 03:16 AM   #1
Hensel
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Subwoofer

Hi Guys,Took delivery of a used BMW yesterday but found out that the speakers under the seat don't work. Sound system does not sound good at all. what could be the problem
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      06-05-2010, 06:31 AM   #2
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take it to the dealer???
a bit more information might be helpful....
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      06-06-2010, 11:58 AM   #3
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Lift up the carpet next to the front seats (between door and seat at the join) and check that the wire is connected to the underseat speakers. Sometimes the audio guys use the signal for additional subs in the boot.
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      06-11-2010, 08:36 AM   #4
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What subs can i replace the ones under the seat with
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      06-13-2010, 03:54 AM   #5
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you can use the earthquake SWS8, or the Pioneer FLAT 8", these are the ones that fit in the current enclosure, there are a number of 6.5" split systems that fit too, but the grills then stick out.
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      04-06-2011, 08:15 PM   #6
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same thing happened to me today i was driving and all of sudden my bass stops working. Will this be covered under warranty?
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      04-07-2011, 12:19 PM   #7
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if you are under warranty everything should be covered
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      04-26-2011, 10:22 AM   #8
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Virk, did you get your subs replaced?
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      04-26-2011, 10:27 AM   #9
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In my 08 e92, I can't really hear the subs doing anything either and can only barely feel them moving. Wonder if this is my problem as to....Do you guys usually hear them specifically hit. I always just thought they were designed to blend in well to the rest of the sound so you didn't hear them specifically.
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      04-27-2011, 02:11 AM   #10
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The stock E9x system without logic7 is a very underpowered system as proven by the many people complaining about the sound. There is a distinct lack of bass, especially midbass in the saloons. I have personally replaced my underseat subs with Infinity 6.5" mid bass driver that is now powered by an amp in the boot and boy is there a marked improvement in the mid-bass and as stated you can actually feel the music now!

Word of warning, if you dont have a logic7 system, dont try and amplify the stock underseat subs as they are 2ohm to work more efficient on the low power from the head unit. I amplified my stock subs and consequently melted the coils on both subs, hence the replacement :-)
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