Center speaker rattles in Sport Plus

jhbodle · 07-25-2015, 04:22 PM

When I accelerate hard in Sport Plus throttle mode, the center speaker buzzes and vibrates from about 3000rpm onwards. It makes it really obvious that the engine note is coming out of the speaker and ruins the effect.

Is this an easy fix for me to do? I don't really want to take it to my dealer (60 miles away).

Mario_Kart · 07-25-2015, 04:24 PM

disable active sound by coding or pulling the plug in the trunk.

afadeev · 07-25-2015, 06:14 PM

Quote:

Originally Posted by jhbodle

When I accelerate hard in Sport Plus throttle mode, the center speaker buzzes and vibrates from about 3000rpm onwards. It makes it really obvious that the engine note is coming out of the speaker and ruins the effect.

Is this an easy fix for me to do? I don't really want to take it to my dealer (60 miles away).

There is something obviously wrong with the speaker, which just happens to be highlighted by the active sound.

If you can reproduce it reliably, on demand, you can save it until your next service appointment with the dealer, and they will replace the speaker.
In the meantime, you can either code out active sound (if you are comfortable DIY-ing that), or just unplug the speaker. But sooner or later, you need to have the speaker replaced.

a

jhbodle · 07-25-2015, 06:17 PM

Quote:

Originally Posted by afadeev

There is something obviously wrong with the speaker, which just happens to be highlighted by the active sound.

If you can reproduce it reliably, on demand, you can save it until your next service appointment with the dealer, and they will replace the speaker.
In the meantime, you can either code out active sound (if you are comfortable DIY-ing that), or just unplug the speaker. But sooner or later, you need to have the speaker replaced.

a

I was worried you were going to say that. The next service isn't due for 15,000 miles so I have a bit of a wait ahead of me

dmnc02 · 07-25-2015, 08:01 PM

I used to have exactly the same issue, as mentioned in this post: http://f80.bimmerpost.com/forums/sho...69&postcount=9

It stopped after I changed the equalization to the first of the suggested settings in this post: http://f80.bimmerpost.com/forums/sho...8&postcount=77 (reducing the artificial bass hump is probably what did the trick). As an added bonus, this also makes the HK system sound much more linear.

You might want to give this a try.

afadeev · 07-25-2015, 09:47 PM

Quote:

Originally Posted by jhbodle

I was worried you were going to say that. The next service isn't due for 15,000 miles so I have a bit of a wait ahead of me

15K miles for the first post-break-in service?
I am at 4.5K miles right now, and the car tells me that the next service is due in 5K miles, or by December (1 year since purchase), whichever one is earlier. Are we on a more aggressive maintenance schedule in the US, or have you not been flogging your M3 and thus extended your service cycle?

a

Wah · 07-25-2015, 10:08 PM

I get a similar buzzing but its very faint. I have Bavsound speakers though so it is a bit more complicated than just bringing it to the dealer. I'm not even sure if its a problem with the speaker.

jhbodle · 07-26-2015, 06:09 AM

Quote:

Originally Posted by afadeev

15K miles for the first post-break-in service?
I am at 4.5K miles right now, and the car tells me that the next service is due in 5K miles, or by December (1 year since purchase), whichever one is earlier. Are we on a more aggressive maintenance schedule in the US, or have you not been flogging your M3 and thus extended your service cycle?

a

In the UK our service intervals are every 16000 miles or two years, whichever comes first. I'll service it halfway into this interval as it seems stupid to run a M with this long an interval.

CardinalZeus77 · 07-27-2015, 01:18 AM

One of my rear speakers was rattling at certain speeds. Took it into the dealers and they sorted it.

whatheheck · 07-27-2015, 02:01 PM

I would start by checking to ensure all the center speaker hold down screws are tight. There's 3 of them. Very easy to do, takes 2 minutes. Lift up the screen and you will see the hold down screws.

Accel Junky · 08-12-2015, 03:06 PM

Same thing just happened with mine. Center channel buzzes during active sound but also when I have a phone call routed through the car it buzzes as well. Has to be a blown speaker or something. Sucks...I just got it back from the dealer and that was not happening before.

07-25-2015, 04:22 PM	#1
jhbodle Captain 147 Rep 899 Posts Drives: F90 M5 Join Date: Mar 2005 Location: UK iTrader: (0) Garage List 2007 E92 335i M-Spo ... [10.00] 2005 E90 325i SE (E ... [0.00]	Center speaker rattles in Sport Plus When I accelerate hard in Sport Plus throttle mode, the center speaker buzzes and vibrates from about 3000rpm onwards. It makes it really obvious that the engine note is coming out of the speaker and ruins the effect. Is this an easy fix for me to do? I don't really want to take it to my dealer (60 miles away). __________________ F90 M5 (Marina Bay Blue, M Performance Parts) / U11 iX1 xDrive 30 (Storm Bay) Previous: F82 M4 / F20 125d M / E92 335i M Ind / E90 325i SE / E46 318i SE / E36 316i
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07-25-2015, 04:24 PM	#2
Mario_Kart Captain 398 Rep 732 Posts Drives: 328 Join Date: Oct 2011 Location: BC iTrader: (1)	disable active sound by coding or pulling the plug in the trunk.
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07-25-2015, 08:01 PM	#5
dmnc02 Major 920 Rep 1,481 Posts Drives: 2015 M4 Join Date: Feb 2015 Location: PA iTrader: (0)	I used to have exactly the same issue, as mentioned in this post: http://f80.bimmerpost.com/forums/sho...69&postcount=9 It stopped after I changed the equalization to the first of the suggested settings in this post: http://f80.bimmerpost.com/forums/sho...8&postcount=77 (reducing the artificial bass hump is probably what did the trick). As an added bonus, this also makes the HK system sound much more linear. You might want to give this a try. __________________ 2015 Mineral Grey ///M4 6MT
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07-25-2015, 10:08 PM	#7
Wah IG@i.am.wah 2780 Rep 3,815 Posts Drives: M2 CS Join Date: Jul 2009 Location: NJ iTrader: (4) Garage List 2022 Tesla Model Y ... [0.00] 1974 BMW 2002 [0.00] 2020 BMW M2 CS [0.00]	I get a similar buzzing but its very faint. I have Bavsound speakers though so it is a bit more complicated than just bringing it to the dealer. I'm not even sure if its a problem with the speaker.
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07-27-2015, 01:18 AM	#9
CardinalZeus77 Captain 190 Rep 817 Posts Drives: Porsche 991.2 Carrera S Join Date: Jul 2005 Location: United Kingdom iTrader: (0) Garage List 2019 G20 BMW 320d X ... [0.00] 2014 BMW F80 M3 [10.00]	One of my rear speakers was rattling at certain speeds. Took it into the dealers and they sorted it. __________________ Current: 991.2 Carrera S Sold: BMW G20 320d Xdrive M Sport Sold: Porsche Macan GTS Night Blue / Full GTS Interior Sold: F80 M3 Black Sapphire/Sakhir Orange Sold: E92 M3 Jerez Black/Fox Red Leather
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07-27-2015, 02:01 PM	#10
whatheheck Private First Class 95 Rep 140 Posts Drives: Ferrari 360, 2015 SO M4 Join Date: Aug 2012 Location: Everett, WA iTrader: (0)	I would start by checking to ensure all the center speaker hold down screws are tight. There's 3 of them. Very easy to do, takes 2 minutes. Lift up the screen and you will see the hold down screws.
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08-12-2015, 03:06 PM	#11
Accel Junky High on Acceleration 671 Rep 1,439 Posts Drives: 08 M3, 90 GTR, 21 Gladiator Join Date: Mar 2008 Location: Georgia, USA iTrader: (6)	Same thing just happened with mine. Center channel buzzes during active sound but also when I have a phone call routed through the car it buzzes as well. Has to be a blown speaker or something. Sucks...I just got it back from the dealer and that was not happening before.
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