MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Cosmetic/Interior Modifications => Topic started by: xxx_mojo_xxx on March 06, 2010, 08:29:39 pm

Title: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 06, 2010, 08:29:39 pm
I'm looking to reduce some of the tyre noise that travels into the cabin.  I'd like to do this in a way that avoids cancelling the engine noise. Like the sound of that....

Keen to hear where I should start, materials required, etc. 

I've never done anything like this so It'll have to be pretty straight forward stuff.

Thanks
Title: Re: Sound dampening/proofing
Post by: Top Cat on March 06, 2010, 08:36:07 pm
Sit on a cushion.  :laugh:

the added benefit from this is your head is further away from the tyres.  :jumping:

Why not just buy quieter tyres.  :chicken:

You do know, Robin will be along soon to tell you the GTI is a aurel treat, and that any less road noise felt and heard through the car diminishes from the amazing experience of driving the Scuderia   Golf.  :P
Title: Re: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 06, 2010, 08:40:42 pm
TC you actually made me laugh out aloud...now for some serious suggestion plz.

P.S.  I didn't think the Michelin PS2 were particularly noisy.
Title: Re: Sound dampening/proofing
Post by: Garth on March 06, 2010, 08:41:54 pm
Sit on a cushion.  :laugh:

the added benefit from this is your head is further away from the tyres.  :jumping:

Why not just buy quieter tyres.  :chicken:

You do know, Robin will be along soon to tell you the GTI is a aurel treat, and that any less road noise felt and heard through the car diminishes from the amazing experience of driving the Scuderia  Golf.  :P
No, the mk5's a bloody noisy car!  :P

I spend most of my time on the motorway and I would love it to be queiter. The first stage is dynamatting the doors and boot floor, then start lifting the carpets and deadening the floor too!
Title: Re: Sound dampening/proofing
Post by: alex_chung on March 06, 2010, 09:09:40 pm
Sit on a cushion.  :laugh:

the added benefit from this is your head is further away from the tyres.  :jumping:

Why not just buy quieter tyres.  :chicken:

You do know, Robin will be along soon to tell you the GTI is a aurel treat, and that any less road noise felt and heard through the car diminishes from the amazing experience of driving the Scuderia  Golf.  :P
No, the mk5's a bloody noisy car!  :P

I spend most of my time on the motorway and I would love it to be queiter. The first stage is dynamatting the doors and boot floor, then start lifting the carpets and deadening the floor too!

That is prob the best way to do it. If you really wanted to you could dynamat the roof as well!
Alex
Title: Re: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 06, 2010, 09:17:37 pm
Sit on a cushion.  :laugh:

the added benefit from this is your head is further away from the tyres.  :jumping:

Why not just buy quieter tyres.  :chicken:

You do know, Robin will be along soon to tell you the GTI is a aurel treat, and that any less road noise felt and heard through the car diminishes from the amazing experience of driving the Scuderia   Golf.  :P
No, the mk5's a bloody noisy car!  :P

I spend most of my time on the motorway and I would love it to be queiter. The first stage is dynamatting the doors and boot floor, then start lifting the carpets and deadening the floor too!

Cheers... boot is pretty simple... I can see all the bare metal when looking at the spare wheel.

But where would I stick the dynamat in the doors?  Would this be removing the interior door cards and sticking it on the back of that?

And where can I buy this dynamat stuff from?  Presumably, there are different types and grades of this?
Title: Re: Sound dampening/proofing
Post by: alex_chung on March 06, 2010, 09:26:09 pm

Cheers... boot is pretty simple... I can see all the bare metal when looking at the spare wheel.

But where would I stick the dynamat in the doors?  Would this be removing the interior door cards and sticking it on the back of that?

And where can I buy this dynamat stuff from?  Presumably, there are different types and grades of this?

To do the doors you would need to take off the door cards (which is prob like the Leon MKII i.e. a pain in the arse) You just put the dynamat on the back of the door skin and then on the back of the door card. Lots of ICE or Audiophiles recommend that Sound Deadening is one of the best things you can do to your car for Sound.
Dynamat can be had from any Audio place or online. Its not cheap though! Have a look at http://www.dynamat.com/ (http://www.dynamat.com/)
Alex
Title: Re: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 06, 2010, 09:48:12 pm
Don't particularly want to mess around with the door skins...  is there no other way or compromise.
Title: Re: Sound dampening/proofing
Post by: ollie288 on March 06, 2010, 09:50:44 pm
Door cards aren't that difficult to remove at all.  :happy2:
Title: Re: Sound dampening/proofing
Post by: bacillus on March 06, 2010, 10:15:59 pm
The door skins on the mk5 Golf just unbolt from the door itself. You won't easily reach the skin if you just remove the door cards.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fwww.aibrahim.co.uk%2Fdoorskin.jpg&hash=662d0c228e6175ec7c9c0ebb7783de79a5494613)
Title: Re: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 06, 2010, 11:11:46 pm
Yeah, but, yeah - you got to faff around with the door handle bits....  :chicken: :chicken:
Title: Re: Sound dampening/proofing
Post by: QD MBE on March 08, 2010, 10:09:16 pm
Sit on a cushion.  :laugh:

the added benefit from this is your head is further away from the tyres.  :jumping:

Why not just buy quieter tyres.  :chicken:

You do know, Robin will be along soon to tell you the GTI is a aurel treat, and that any less road noise felt and heard through the car diminishes from the amazing experience of driving the Scuderia   Golf.  :P
:popcornsoda:
Title: Re: Sound dampening/proofing
Post by: Gti Jal on March 08, 2010, 10:17:14 pm
Title: Re: Sound dampening/proofing
Post by: stealthwolf on March 08, 2010, 10:24:29 pm
I recall somebody here stripped out their entire car and had it soundproofed with dynamat. Can't recall whether it was illyun (since he wanted it done) or someone like plush-automotive who is heavily into soundproofing/music.
Title: Re: Sound dampening/proofing
Post by: ollie288 on March 08, 2010, 10:35:46 pm
I recall somebody here stripped out their entire car and had it soundproofed with dynamat. Can't recall whether it was illyun (since he wanted it done) or someone like plush-automotive who is heavily into soundproofing/music.

Luke did the whole of his car. :happy2:
http://www.mk5golfgti.co.uk/forum/index.php/topic,4771.30.html (http://www.mk5golfgti.co.uk/forum/index.php/topic,4771.30.html)


Title: Re: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 08, 2010, 11:26:40 pm


This video demonstrates how to remove the interior door card.  That was never the issue...it's removing the exterior door skin which is more fiddly....

Could I sound proof the metal areas exposed with the interior door card off?  Would that be a worth while exercise?
Title: Re: Sound dampening/proofing
Post by: Gti Jal on March 09, 2010, 07:40:01 am
Could I sound proof the metal areas exposed with the interior door card off?  Would that be a worth while exercise?

Thats exactley what I did and it has made ALL the difference. When you see the pro Audio installers sound proof a car they stick it to everything. You dont need to do that. A big bit on the centre of the panel is usually enough.

When you take the factory speaker out you have a large enough hole to work through. I used strips the same width as the diameter of the hole.

Taking the door skin off is fraught with risk of damage.
Title: Re: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 09, 2010, 08:14:47 pm
I take it you drilled out the rivets to remove the speakers?
Title: Re: Sound dampening/proofing
Post by: Gti Jal on March 10, 2010, 06:20:11 pm
Sure did. The rivet size is 4.6mm.  I was keen not to break the factory primer on the hole so I used a 2.5 -3mm first and then a bigger one to take the head off. You should then be able to push the old rivet through the back. Be careful not to drop it as it will rattle around if it gets out of reach.
Title: Re: Sound dampening/proofing
Post by: xxx_mojo_xxx on March 10, 2010, 08:09:56 pm
How did you fix the new speakers?
Title: Re: Sound dampening/proofing
Post by: Gti Jal on March 10, 2010, 11:12:10 pm
The plastic adapters are drilled for the rivets to attach to the door and on the speaker face for screws.


I really wouldn't use the plastic adapters. I have great overall bass response given the location, BUT snare drums seem to induce a strange panel resonance that is annoying.  I blame the plastic adapters for this, there is no dampning between the adapter and the door. I am pi$$ed off as I'm going to strip them down again to fit MDF speaker rings as a potential cure.


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