Sound Deadening / Deadener Tips

[jhnkvn]

Pag nagpa-deadening po ba kailangan "double walling" to achieve the best result? Pag ganun it will consume at least 4 sheets per door.
Me nakita kasi ako, yung nilagyan ng deadener eh yung outer wall lang ng pinto.
Me pics kasi dito sa thread, ang me deadening is yung side na me mga wirings.
Ano po ang tama?

Sent from my iPod

It won't really consume 4 sheets per door unless you're talking about Expedition-sized cars. Usually one sheet inside and another outside or a total of 2 sheets/door.

If you need to choice between the two, deaden the outer wall which has more surface area and where speaker back-waves bounce at.

mga paps, may nakasubok na ba ng butyl based na Car Builders-Sound Deadener from Aus? may fs sa KAC 10 sheets for 2k. comparable kaya sa mga stp, dynamat and other dampening sheets. TIA

Should be comparable. You don't really need branded deadeners. Sure, there are "grades" when it comes to rubber butyl but performance is inherently physics-based. The reason for deadening is just to add mass. The heavier.. the better because it lowers the resonant frequency of the panel (which is the main reason of deadening)

So is it comparable? Yes.

[monty_GTV]

Should be comparable. You don't really need branded deadeners. Sure, there are "grades" when it comes to rubber butyl but performance is inherently physics-based. The reason for deadening is just to add mass. The heavier.. the better because it lowers the resonant frequency of the panel (which is the main reason of deadening)

So is it comparable? Yes.

thanks a lot sir kevin

[D3nb3r]

yung Acoustipad po ni Jeff Tan *P300/sheet is butyl po ba or asphalt?.
Nag pm kasi ako sa kanya and asked for an OEM butyl or stp price and yun ang reply nya.

[atog]

mga sir expert..tanung ko lang pwede ba sa engine cover yan sound deadening mat..balak ko sana ilagay sa engine hatch cover nga grandia..maingay at medyo mainit kasi yun seat..thanks po..

[MonteroGLSV]

Sir ano po pinakamagandang klase ng deadening? Thanks po kahit pricey cya basta sulit at hindi nagmemelt pag mainit

yung Acoustipad po ni Jeff Tan *P300/sheet is butyl po ba or asphalt?.
Nag pm kasi ako sa kanya and asked for an OEM butyl or stp price and yun ang reply nya.

[jhnkvn]

Ganito kasi yan,

Sound deadening, although contrary to its name, has the main purpose of lowering the resonant frequency of a panel by adding mass so that it vibrates at a lower frequency hence less annoying to our ears. For example, a bee buzzing by your ear is extremely annoying while a grinding cement truck isn't. It's primarily used in car audio applications.

If you plan on lowering the noise inside your cabin.. you need to do more than just deadening. Deadening helps.. but it's quite inefficient as a sound barrier. This is why the NVH insulation of car manufacturers like Lexus is legendary. This is because they engineer the car from ground up to plug as many leaks as possible - so what you get is a cocoon inside that shields noise coming from outside. In a practical sense, let's say meron ka space na meron sliding windows - the easiest way on how to block sound is to slide the window to create a "bubble" by plugging in air leaks (because noise travels by air).

Can you use this on your engine/cabin firewall to reduce the amount of engine noise? Yes. How? Just plug as many air leaks you see. Still, this is inefficient.

[attorney]

Has anyone installed these at the engine bay of super grandias? Sobra ingay when in expressways..

[MonteroGLSV]

Thanks sir jhnkvn your the best. actually i have put some soundproof concept stuffit and noticeable quieter at the high speed however engine noise still there

Ganito kasi yan,

Sound deadening, although contrary to its name, has the main purpose of lowering the resonant frequency of a panel by adding mass so that it vibrates at a lower frequency hence less annoying to our ears. For example, a bee buzzing by your ear is extremely annoying while a grinding cement truck isn't. It's primarily used in car audio applications.

If you plan on lowering the noise inside your cabin.. you need to do more than just deadening. Deadening helps.. but it's quite inefficient as a sound barrier. This is why the NVH insulation of car manufacturers like Lexus is legendary. This is because they engineer the car from ground up to plug as many leaks as possible - so what you get is a cocoon inside that shields noise coming from outside. In a practical sense, let's say meron ka space na meron sliding windows - the easiest way on how to block sound is to slide the window to create a "bubble" by plugging in air leaks (because noise travels by air).

Can you use this on your engine/cabin firewall to reduce the amount of engine noise? Yes. How? Just plug as many air leaks you see. Still, this is inefficient.

[atog]

sa engine wall or hood may naka pag kabit na kaya..di ba matutunaw yun mat pag mainit..

[monty_GTV]

check out FB of JC car audio, they had put deadening on a grandia...

https://www.facebook.com/media/set/?...4736775&type=3

https://www.facebook.com/jccaraudiop...type=3&theater

[gh0str1d3r]

Noob. Question, pede po gamitin yung insulation n ginagamit s bubong ng bahay? Para sound deadening s car? Malaki po b pinagkaiba non?

[sientobente]

Noob. Question, pede po gamitin yung insulation n ginagamit s bubong ng bahay? Para sound deadening s car? Malaki po b pinagkaiba non?

pang heat rejection ata yun chief. yung sound deadener kasi, can absorb sound at the same time making your doors rigid.

[jick.cejoco]

Insulation for the engine compartment and other areas with flammable fluids are fibreglas. Doors, floor, headliner and trunk are either fibreglas or urethane foam. The rebonded/recycled foam at upholstery suppliers are the most readily available.

[sientobente]

urethane and fiberglass are very good sound absorbers, these are mostly used for room acoustics. in the car environment though, we want to make the door panel more rigid to avoid resonance. fiberglass and urethane will kinda be hard to mold into the door and in a moving vehicle, dust particles coming from it isn't really ideal.

[jick.cejoco]

That's when you use adhesive spray to the substrate and attach the panel insulation. It can be done with the least ingenuity and innovation

[sientobente]

^ something just crossed my mind, price-to-square foot ratio, wouldn't that be more expensive than just getting the run-of-the-mill butyl sound deadener? plus it takes skill to perfect fiberglass molding. fiberglass too is very difficult to bond because it detaches itself easily when flexed or pushed.

[gh0str1d3r]

Ok.....yung sound proofing used for rooms and studios, pede yon? Which is more expensive b? Sn po nakaka bili ng sound deadening for car dto s area ng marikina?

[dr. d]

i think those light, foam-or-corklike panels we see on ceilings and walls, are just anti-sound-reflection thingees.. and the sheets we see pasted inside door panels and on car floors, are just light duty versions of the really more effective sound-deadening panels which are made of dense, heavy (rubber?) material. they are so heavy, doing a car is like having a smaller passenger in the car at all times.. and it ain't cheap..

but... whatever works..

[jick.cejoco]

Butyl sound deadener is combustible and heavier and is really noise insulation but a vibration/sound deadener for thin car body parts that flex/vibrate/shake and makes noise. Insulating fibreglas is different from structural fibreglas. Google Owens Corning. There are pink noise batts and there are yellow colored semi rigid panels. The ones used in cars are semi-rigid molded type.

[sientobente]

Butyl sound deadener is combustible and heavier and is really noise insulation but a vibration/sound deadener for thin car body parts that flex/vibrate/shake and makes noise. Insulating fibreglas is different from structural fibreglas. Google Owens Corning. There are pink noise batts and there are yellow colored semi rigid panels. The ones used in cars are semi-rigid molded type.

Ah ok, I now get the application you meant for fiberglass. That is also new information for me -- Butyl rubber = flammable, isn't that used on tires too? Anyway, it's good that I stayed away from it and used Aluminum deadening sheets from STP.