Sound Deaden the subwoofers and surrounding rear trim panel

How-To articles are in here.
Post Reply
billy_beemer
Member
Member
Posts: 134
Joined: Thu Sep 29, 2011 4:18 pm

Sound Deaden the subwoofers and surrounding rear trim panel

Post by billy_beemer » Sun Mar 29, 2015 11:05 pm

I have the 11 speaker setup, to start with I thought one of the subs was blown, but mainly the farting noise of the stock subs comes from the surrounding trim (at least on my car it did)...

As I couldn't really find any concrete documents on the wattage and resistance of the subs (which I know at least are 2 ohm and probably 30-40watts RMS) I felt it best just to have a go at applying some good old Dynamat to try and resolve the problem..... and it seems to have worked quite well, more punch to the subs and less farty noise.... almost no farty noise in fact..... not bad for an afternoons work... as I couldn't find a guide, here's how:

Wind deflector off, prise off the little caps to reveal some screws, pop those out...
Image

Prise apart the rollbar cover...
Image

Image

Unscrew.....
Image

Image

Pull out the weather trim...
Image

Pull up to remove the kick plate guard, you'll need to remove the rivets and slide them back in to put it back on later...
Image

Image

You need to unscrew and remove the speaker before doing this part, and make sure you have a small precision flat head to remove the wire connections for the rear courtesy light and the speaker - remember extra care must be taken when using screw drivers near speakers...
Image

Wasn't 100% sure whether these rivets should be removed but I wiggled this around until it came free
Image

Remove cheeky bolt (you need to remove the trim nearer to the front of the car to reveal this)
Image

Pop this off...
Image

Take a tea break and ponder on whether this is worth while..... of course it is - you're a man, man up....
My pondering took me to a time when I owned an MX-5 and I thought.. the BOSE on the cheap mazda didn't rattle......
Image

Open the roof half way, remove cheeky rivets - there's one hidden at each end too.
Image

Image

Now the panel can slide free to reveal some bolts, pop those out...
Image

Cheeky bolts hidden behind the little plastic cover that just kinda wiggles free
Image

Remove remaining top bolts and you'll find the whole trim panel starts to wiggle free - its held in around the centre console and removing this was a faff, you have to peel back the side covers slightly and work it free - a 2nd pair of hands or even a 3rd would have been a bonus but I managed to do it - you have to be weary as the plastic going into the centre console is dead sharp and will mark the soft leather arm rest...
Image

Image

Image

Subs! Unbolt, unclip and take inside.....
Image

Image

4 screws hold in the sub, once removed it took a fair bit of prising to get it out but with care and force (forceful care?) out it will come.
Image

Now go to town with the Dynamat, I coated the inside of the box, the back of the box, inside the metal enclosure on the car and parts of the bulkhead trim before slinging it all back together.
Image

Image

Now play some dance music with the BASS up and hope you haven't caused any new rattles in doing all this.

I lost a couple of rivets putting it back together so some spares would come in handy........
Z4M gone / 2009 35i just arrived / E Class Merc going strong

User avatar
Fast3000
Senior Member
Senior Member
Posts: 1016
Joined: Sun Feb 23, 2014 11:43 am
Location: Surrey...England

Re: Sound Deaden the subwoofers and surrounding rear trim pa

Post by Fast3000 » Mon Mar 30, 2015 12:28 am

Anything to make that bass sound better! Top job! :thumbsup:

User avatar
Squiddie
Member
Member
Posts: 125
Joined: Fri Oct 31, 2014 3:13 am

Re: Sound Deaden the subwoofers and surrounding rear trim pa

Post by Squiddie » Mon Mar 30, 2015 2:52 am

Nice, nice.

When I put the BSWs into my e46 I spent a lot of time on the so-called "optional" sound dampening.

Optional my rear. You need to quieten these things up.

billy_beemer
Member
Member
Posts: 134
Joined: Thu Sep 29, 2011 4:18 pm

Re: Sound Deaden the subwoofers and surrounding rear trim pa

Post by billy_beemer » Mon Mar 30, 2015 9:50 am

Ah I emailed them BSW to see if any of the speakers which are similar in parts used on the X3s I believe would fit, they replied saying the ones they offer are too deep - sad times.

So this was the next best option. I also snuck some Dynamat in behind the rear speakers which can't hurt. Not sure I can be bothered but I do have enough to do behind the door cards but I remember it being a total faff doing the doors on the E85.

Might do the centre speaker as that takes 5 seconds to pop out. Now to cure the dashboard rattle (passenger seat) grrrr :)
Z4M gone / 2009 35i just arrived / E Class Merc going strong

User avatar
KERMIT1970
Senior Member
Senior Member
Posts: 2057
Joined: Fri Sep 03, 2010 10:03 pm
Location: Ardrossan Ayrshire Scotland

Re: Sound Deaden the subwoofers and surrounding rear trim pa

Post by KERMIT1970 » Mon Mar 30, 2015 1:47 pm

Good write up Billy :thumbsup: was think about doing mine as I think the bass is a bit rattley :thumbsdown: only concerned about causing more rattles :x
Cars: 2016 M4 vert YMB & Range Rover Sport Overfinch

Gone
: 2014 z4 35is melbourne red & black leather
: 335d M sport Coupe Black with red leather
: z4 Coupe 3.0 si Red with Black Leather 18" CSL`s
: z3 2.2 sport

billy_beemer
Member
Member
Posts: 134
Joined: Thu Sep 29, 2011 4:18 pm

Re: Sound Deaden the subwoofers and surrounding rear trim pa

Post by billy_beemer » Mon Mar 30, 2015 10:47 pm

It is a danger, however I have both seats so far back they almost squish the bulkhead panel anyway so I'm sure that helps lol.

I have some rattle to cure around the sat nav screen / to the passenger side dashboard, no idea how to remove that safely (yet) :D
Z4M gone / 2009 35i just arrived / E Class Merc going strong

fmorelli
Newbie
Newbie
Posts: 2
Joined: Wed Mar 30, 2016 11:39 pm

Sound Deaden the subwoofers and surrounding rear trim panel

Post by fmorelli » Wed May 16, 2018 10:53 pm

Ok where did all the images go?

Filippo

flybobbie
Senior Member
Senior Member
Posts: 1288
Joined: Sat May 25, 2013 8:27 pm

Sound Deaden the subwoofers and surrounding rear trim panel

Post by flybobbie » Sun May 27, 2018 7:49 pm

Probably in the photo bucket.

taranfx
Newbie
Newbie
Posts: 11
Joined: Wed Jun 06, 2018 7:25 am

Sound Deaden the subwoofers and surrounding rear trim panel

Post by taranfx » Thu Jun 07, 2018 9:32 pm

Can you repost pictures?

Pantosh
Newbie
Newbie
Posts: 1
Joined: Sat Jun 30, 2018 11:53 pm

Sound Deaden the subwoofers and surrounding rear trim panel

Post by Pantosh » Fri Jul 06, 2018 7:09 am

Hey Billy, can you please repost the pictures? Or send those to my email? (cpantojadlm@gmail.com) Would be very helpful. Thanks!

fmorelli
Newbie
Newbie
Posts: 2
Joined: Wed Mar 30, 2016 11:39 pm

Sound Deaden the subwoofers and surrounding rear trim panel

Post by fmorelli » Fri Jul 06, 2018 2:32 pm

Billy has not logged in since August 2016. No one seems to be repairing this. In the interest of keeping E89 Z4 information available to all of us (information is scant for us Z4 owners), I have replicated the thread and images here: https://bmw.spoolstreet.com/threads/sou ... post-49047. I have this content as it was invaluable for the complete stereo change we did on my Z4. I've documented this on Spoolstreet where a number of E89 Z4 enthusiasts have been gathering.

For those looking to leverage this information, I suggest you use the link above, then read my build thread post, where I attempt to provide further annotations on the process: https://bmw.spoolstreet.com/threads/e89 ... post-38469

Filippo

Post Reply