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Z1000 Profile
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Date Registered: 06-2006
Location: Sydney.
TOTAL POSTS: 83
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How effective is the Dynamat Xtreme?


Hi,

I think many forum members have already used Dynamat Xtreme to improve their after-market car audio system, hence I am wondering how effective it is in stopping the door from rattling? Slight, marginal or significant sound improvement?

Has anyone actually used it extensively to their doors and floor area to cut down the outside noise and vibration? If so, how well does it perform?

Any downside at all other than extra weight in the car?

Are there any equally good but cheaper sound deadener on the market that people have used and deserve your recommendation?

Thanks in advance


---
Cheers
William (X363)

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06 Platinum STS
1/Jun/2006, 1:30 pm Link to this post Send Email PM   Send Private Message
 
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Date Registered: 06-2005
Location: Orange, NSW
TOTAL POSTS: 269
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Re: How effective is the Dynamat Xtreme?


Please excuse my ignorance, but what is Dynamat Xtreme? Where do you get it?

Years a go I purchased a sound deadening material that was heavy, had felt on one side and vinyl on the other. Is it anything like this?

I will be interested to learn of peoples experience with any sound deadening stuff.

Thanks.

---
John,
From Orange NSW.
My rides are:
2002 TI Auto (Series 1) in Twilight, and
2007 Maxima in Bright Silver
2008 Piaggio MP3 400 in Black
Member number: X165
1/Jun/2006, 3:48 pm Link to this post Send Email PM   Send Private Message MSN Blog
 
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Date Registered: 06-2006
Location: Sydney.
TOTAL POSTS: 83
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Re: How effective is the Dynamat Xtreme?


Hi Dunoon,

Check this out: http://www.dynamat.com/products_car_audio_speaker_kit.html

It has recieved some good reviews.

You can find it on the ebay.



---
Cheers
William (X363)

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1/Jun/2006, 5:40 pm Link to this post Send Email PM   Send Private Message
 
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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: How effective is the Dynamat Xtreme?


William, I thought I'd already covered this in another topic, but I did a search and couldn't find my post. It could've been in the yahoogroup instead...

Dynamat is a premium high quality brand-name sound deadener, and you're most likely paying for the brand name (and research that goes into the product) as it is considerably more expensive than other brands (even when the product appears almost identical).

I have never used Dynamat (which even has different grades/thicknesses) however I have used a brand called Brown Bread which I believe is made in the UK and is very similar to Dynamat. It was available from Jaycar and Doran Pro Audio (Bankstown), and probably other stereo shops.

Another brand is G-Spot which is relatively new to the market, and similar to Dynamat in that is has different grades/thicknesses. I trialled a sample of it when it first became available (as I was heavily involved in the car audio scene several years ago).

Bostik also make a sound deadener that comes in sheets about 60cm long and 25cm wide, and I think it had about 20 sheets in a box for about $60?

All the above examples come with a self-adhesive backing (like a sticker). You can also get brush-on sound deadener for the really curvy or hard-to-reach panels.

If my memory serves me correctly, one of the car performance or car stereo magazines from years ago actually did a review of various brands of sound deadener (including a commonly- and cheaply-available construction sealant which comes as black sheets/strips/rolls with foil backing which became popular in the car audio circuit for some time, even though it was never intended for that purpose).

I say "was" because it's been several years since I've bought and used them, and am not sure if they are still available.

I can't remember exact prices or quantities off the top of my head - I think a roll of 50cm x 1m Brown Bread was about $30, yet for a similar size of Dynamat you'd be looking at well over double the price. I've already mentioned the Bostik price, and I can't remember where I bought that from - it was from a place that supplied automotic spare parts (ie: to smash repairers).

Each of the self-adhesive ones required heating up before applying them (so they could be bent into shape to cover the panels) - but some needed alot more heating than others. The Bostik ones I let sit separately on concrete in the sun on a hot day before I used them, and even then they still cracked as they cooled too quickly. The other brands were much more flexible and didn't require as much heating to mold them into shape.

On my previous car, I used up to 3 layers of Brown Bread on the two front doors. This made the doors very solid-sounding (when you knocked on them with your knuckles, and also when closing the doors). The "sample" G-Spot was used on the underside of the roof (trying not to damage the roof lining was a challenge) to try and reduce the booming noise the roof made as it flexed in and out from having three 12inch subs pumping away. I used the Bostik extensively on the floor of my previous car before that (I stripped the interior).

To summarise, any sound deadener is better than none at all, and more is better than a little bit. It isn't critical that every square inch is covered for sound quality, but to keep road noise out, you're going to need quite alot.

Applying it is very easy, and it's impossible to "make a mistake" apart from damaging trim panels in the process of removing or replacing them.

If you're after a bargain, I'd be surprised if eBay didn't spit out pages of sound deadener from a search. Otherwise I'd recommend the previously-mentioned stores, or check out Car Audio Australia's website/store.


---
Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_YokoGeoA/T-S_TBS_bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.
1/Jun/2006, 11:18 pm Link to this post Send Email PM   Send Private Message MSN Yahoo Blog
 
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Date Registered: 06-2006
Location: Sydney.
TOTAL POSTS: 83
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Re: How effective is the Dynamat Xtreme?


Thanks Rich. I enjoy every bit of your reply.

I have just found out Brown Bread (now called B-Quiet) is a lot more cost effective than Dynamat according to the overseas cost comparison, about half the cost I found. Which means I can now apply double layers for the same amount of money.

Called up Jaycar and they have never heard of such thing, I will try that Bankstown place and the website you suggested.

WRT installation, is an hair dryer sufficient to heating up the Brown Bread?


---
Cheers
William (X363)

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2/Jun/2006, 9:08 am Link to this post Send Email PM   Send Private Message
 
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Date Registered: 06-2006
Location: Sydney.
TOTAL POSTS: 83
Reply | QUOTE
Re: How effective is the Dynamat Xtreme?


Hi Rich,

Just rang up another Jaycar, and it does have the sound deadener (the one with adhesive backing).

Believe or not, for the qantity I require (approx. 3m^2), buying Dynamat off ebay is actually cheaper than buying Jaycar's one; Dynamat costs $76 per square metre while Jaycar's one costs $125.

Plus Dynamat can withstand higher temperature than Brown Bread (260c vs. 70c), and it is thicker too (67 vs. 45 mil). Therefore I guess the choice is clear.

Apparently the best sounddeadener available on the market is made by a company called Second Skin Audio, it is cheaper than Dynamat however I doubt we have it here. Have you heard of Damplifier Pro by Second Skin Audio?

Anyway, thank you for pointing me to the right direction, you have been helpful.

 

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Cheers
William (X363)

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06 Platinum STS
2/Jun/2006, 11:17 am Link to this post Send Email PM   Send Private Message
 
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Date Registered: 10-2005
Location: Newfoundland Canada
TOTAL POSTS: 395
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Re: How effective is the Dynamat Xtreme?


quote:

Z1000 wrote:

Apparently the best sounddeadener available on the market is made by a company called Second Skin Audio, it is cheaper than Dynamat however I doubt we have it here. Have you heard of Damplifier Pro by Second Skin Audio?

 



William:

Here's a link to Second Skin:

http://www.secondskinaudio.com/cgi-bin/index.cgi

Friend of mine from Montreal, Canada has used it extensively on his X-T and swears by it - says it's the best invention since sliced bread.

When the weather improves here (hopefully soon) I plan to use the same product.

Cheers = Roger



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Roger
X 228


2006 X-T Bonavista Edition
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2/Jun/2006, 11:36 am Link to this post Send Email PM   Send Private Message
 
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Date Registered: 06-2006
Location: Sydney.
TOTAL POSTS: 83
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Re: How effective is the Dynamat Xtreme?


Hi Roger,

Thanks for the link ..... just thinking how I can get my hands on those downunder? I'd imagine the shippping cost is going to be a killer because of the weight.

Let me know how you think once you have applied it to your car.



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Cheers
William (X363)

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2/Jun/2006, 12:40 pm Link to this post Send Email PM   Send Private Message
 
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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: How effective is the Dynamat Xtreme?


You may need to be a member to view this thread:

CAA Sound Deadening thread with link to Install Tutorial

It contains prices eg: Dynamat Extreme door pack contains 4 sheets of 292mm x 812mm RRP $129 a year ago. More info in the thread.

I've never heard of Second Skin before.



Last edited by basshead, 2/Jun/2006, 5:38 pm


---
Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_YokoGeoA/T-S_TBS_bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.
2/Jun/2006, 5:37 pm Link to this post Send Email PM   Send Private Message MSN Yahoo Blog
 
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Date Registered: 06-2004
TOTAL POSTS: 37
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Re: How effective is the Dynamat Xtreme?


Hi

I dynamated mine, both front doors and the rear door and the tailgate. as for sound dead deadening I can only go by how I feel and hear about it as I am unable to take any measurement.

There is a noticable difference in speaker responses straight away, as there is less reflection now which will cancel out some of the bass. You can hear lower bass frquency more easily.

As for every day driving wise, the car is a little more quiet now than before, most noticeble is when you drive pass another car in parallel or they drive pass you. It is quite a bit subdued. As for road noise, don't seem to hear it is much different, it just come from a difference place now rather all over.....

Hope this helps.
Alan
3/Jun/2006, 2:58 am Link to this post Send Email PM   Send Private Message MSN
 


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