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i have heard many people talk about dynamat and products similar to that, some i have heard say it is well worth the money and totally improves sound quality from the subs, others say they can barely notice a difference.....if i could have any opinions as to why or why not i should invest in dynamat, it would be greatly appreciated.
thanks, G

 
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Just worried about sound of your subs eh.. damn dude.. It also greatly improves midbass response flexing in panles, drastially reduces road noise..stops alot of rattling..slightly increases SPL..eliminates alot of road noise(most road noise is 10-25hz) so your subs have to compete with that..not to mention road noises causes some cancellation at higher frequencies....Your entire system sound improves because it's competing less with ambient noise. and also the reduced resonances from the panles imrpoves. Bass, Midbass and midrange clarity...



Cheers
Mohawk

 
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yeah, its all just hype. everything woll work out JUST as well, tho you might need a few xtra layers [IMG]i/expressions/face-icon-small-wink.gif[/IMG]

the advantage to dynamat extreme and stuff like that comes with competition, where you are allowed MAX 2 layers, other wise your in teh extreeme class with people who use cement and such casue with ONLY two layers, dynamat is thicker, weighs more, and will deaden batter.

but if your just looking to improve yoru sound, who cares? get teh cheap stuff and install a biillion layers

only reason IM gonna get extreem next time is cause its a PAIN to install so many layers of deadener. two is bad enuff, but three? four? even five? it took me two weeks to do my entire car! (minus trunk and floor)

 
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There is no limit on how much damping material of any kind you can use when you compete in USACI or IASCA.

Is using damping materials in general hype? No, they can be extremely effective if applied properly.

Is there hype surrounding some brand name damping materials? Yes, but it's not that they aren't effective, it's just that they cost much more than the many comparable products that are also available.

IMO, do it right the first time and get a quality product. You'll be glad you did.

 
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Well Dynamat Extreme is a Great product no doubt.. But at it's price it's like taking a roll up the old [IMG]i/expressions/moon.gif[/IMG][IMG]i/expressions/moon.gif[/IMG]..

Raam Mat uses the same deadening material as Brown bread 1.6mm Thick Bitumen.. which is actually more efficient at deadening than Dynamat Extreme (Asphalt based) The Dynamat Extreme is heavier yes and deadens a bit better than Brown bread and Raam60...true.. but the actual effectiveness of 2 layers of Either product is unnoticable as far as damping goes.. Not for sound absorption and road noise.. D'mat has a bit of an edge..but not much.. but to truly absorb noise.. a Sound damping material is not what you need you need actual sound absorbing matrials, not dampers.. ex



B-Quiet Lcomp


The Adhesiveness of Raam mat could be more enduring.. But on vertical panels such as doors it's nothing to worry about.. but as a hoodliner or roofliner the heat weakens the adhesive.. With Brown bread and Dynamat Extreme it's not an issue

Besides that if your that serious about adhesion you can always buy a can of 3m high temp permanent adhesive and Spray the area you're gonna deaden.. off $13.99 a can at Wal-Mart [IMG]i/expressions/face-icon-small-smile.gif[/IMG].. still about 70% Cheaper than Dynamat Extreme..

Power to RAAM Mat for Yankees
Brown Bread for Canucks (works out cheaper)

Cheers
Mohawk

 
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/me has VERY few rattles in his ride....

but yeah, said this in another post, if your gonna compete, then you can only have 2 layers by regulation to not be an extreme car (dbdrag, anyways) so youll wanna get teh best.

otherwise, if it will all work, then may as well get teh cheap stuff, unless you dont have teh time to invest, (cause stormguard takes a boatload of time to put in!)

that adhesive spray is a good idea, might just use that next time, mohawk [IMG]i/expressions/face-icon-small-wink.gif[/IMG]

 
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WhiteRabbit - I'd like to see where you are getting your information about only being allowed two layers of damping material to compete. I know for a FACT that is not true for IASCA, USACI, MECA, & SLAP. I'm not an SPL person so I can't speak for DBDrag but I seriously doubt it applies there either. There is no way to enforce such a rule and it makes no sense to implement something like that.

Mohawk - You should talk to Rick about RAAMmat's "lack of enduring adhesive" and see what he has to say. I have at length.

Anyone else reading this stuff - Damping or "adding mass" to eliminate vibration is only one step in the process of improving the noise level in an automobile environment. It is a great start but by no means the final solution. There are many other steps that can and should be taken to further address the problem. As Mohawk said earlier damping is not sound proofing. Absorbtion and barrier materials can also be introduced in addition to the damping to address the problem on the next level.

 
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like i said, db drag only (i dunno rules for iasca, ucas, or anywhere else ;p)

"Street Division Passenger Compartment Restrictions


The following passenger compartment restrictions apply to the Street Division only.



· Modifications to the passenger compartment are prohibited.



Additional Guidelines:



· The OEM headliner (or an equivalent replacement) must remain in place.

· The OEM door panels (or an equivalent replacement) must remain in place.

· The OEM carpeting (or an equivalent replacement) must remain in place.

· Sound damping materials may be used to reduce vibration when installed in accordance with the manufacturer’s recommended installation instructions. For mat-type materials, a maximum of 2 layers may be applied at any given point. For spray-on materials, a maximum spray thickness of 1/8 inch may be used. (Only one type of sound damping material may be used at a given point.)

· Expanding foam may be used sparingly throughout the vehicle to seal small openings or reduce vibration, but may not be used to fill voids or other large cavities (such as the dashboard or doors)"





db drag rules, 2002

 
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<< Absorbtion and barrier materials can also be introduced in addition to the damping to address the problem on the next level. >>



my personal favorite stuff in the whole wide world is expanding foam

 
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I didn't know that about dbdrag, that's real interesting. I'm thinking the reasoning behind it might be that since the contest is strictly for SPL and not SQ, those types of restrictions could make for a more level playing field. I still think it would be very hard to enforce but I guess I do see the logic there. Thanks for that info.