Honest opinions on results of sound deadening

[Rudy 10+ year member]

Gotchya //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif I know Rick suggested it when I talked to him about it a few months ago. I'd only need the ensolite for the doors with speakers, right? Trunk wouldn't matter so much due to it being only lower frequencies?

Doors with speakers are critical, but I really use it every where - trunk, floor, roof, quarter panels, doors with and without speakers. It is very light and relatively inexpensive compared to the mat and it helps aywhere you use it. I actually pull as much of the dash apart as I reasonably can and stuff it into the gaps. A nice thing to do is put mat on the HVAC ducts and then wrap them in a few layers of foam. You will not believe how much quieter the air moving through the system can be. Then again, I'm nuts //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Anthony Collova 10+ year member]

If you are going to go through the trouble and glory or sound deadening your car, i highly suggest adding a layer of closed cell foam. The ensolite product that Rick sells is a very good one. Cover up as much of th evibration mat as you can. Especially in the doors. The less reflections in the doors the better the mids will sound. The only place you might not use the foam on top of damping mat isin very tight spots, like the back of the plastic trim panels.

Usually we use an open celled foam for such appliations but as long as the material can compress very well, you will be fine.

Remeber, there are 2 type of structure borne resonance:

-Vibrations - single resonating panel

-Rattle - when 2 panels resonate against each other

Treat each problem properly, then once all the structure borne noise is reduce, start hitting the airborne sound with a filter or barrier composite.

ANT

http://www.secondskinaudio.com

 

[DoobieBrother 10+ year member]

See, now this is something I just don't see in most other businesses. Two business owners, both with great products that participate, give pointers, etc. without getting overly pushy about there own product, or worse bad mouthing the competition just to try and gain more business. In my opinion, both Rick and Ant have excellent products and given how they run their businesses both deserve as much business as they can possibly get.

 

[Anthony Collova 10+ year member]

There are a few customers that I do bad mouth. Just not to anyone in the industry or on the internet.

Some of our competitors are worse than shady. The only thing I can do without looking like a threatened idiot is to not reccomend their product to anyone.

There are tons of great products out there with great people running them:

Raamat -

Dynamat -

Hushmat-

Stinger Road Kill Expert-

Quiet Solutions-

All good, solid solutions for automotive sound deadening.

ANT

http://www.secondskinaudio.com

 

[phenryiv1 10+ year member]

esolite and raammat do differnet things. Raamat is simply used to stop panels from rattling, ensolite helps physically absorb the soundwaves. That's why they are used behind the speaker instead of raamat. 1 roll of ensolite will go a long way.

The only reason not to use a closed cell foam like Ensolite or Neoprene is if you are purely interested in increasing SPL. For noise reduction and improved SQ, it is critical. My subjective impression is that the two together are twice as effective as double the amount of either alone.
I put at least one layer of foam on top of every square inch I apply vibration damper to. The foam helps with noise reduction, reduces reflections and distortion inside the vehicle and works as a gasket to stop rattles from trim panels. Not trying to steal glue sales from anybody, but I never glue the foam down on the floor. Carpet holds it fine and makes it easier to get to the sound deadener if you ever want to add more.

These two posts should be added at the very TOP of the "Sound Deadener and You" thread. I don't know if there is a subject related to cabin noise and/or sound deadening that is MORE misunderstood than this distinction. I know that I had NO CLUE about the difference between a mass deadener and a barrier membrane until I read up on here and search extensively, as well as reading the SDS.

These two posts pretty much sum up the basics.

Edit: Okay, add Ant's post as well!

If you are going to go through the trouble and glory or sound deadening your car, i highly suggest adding a layer of closed cell foam. The ensolite product that Rick sells is a very good one. Cover up as much of th evibration mat as you can. Especially in the doors. The less reflections in the doors the better the mids will sound. The only place you might not use the foam on top of damping mat isin very tight spots, like the back of the plastic trim panels. Usually we use an open celled foam for such appliations but as long as the material can compress very well, you will be fine.

Remeber, there are 2 type of structure borne resonance:

-Vibrations - single resonating panel

-Rattle - when 2 panels resonate against each other

Treat each problem properly, then once all the structure borne noise is reduce, start hitting the airborne sound with a filter or barrier composite.

ANT

http://www.secondskinaudio.com

 

[phenryiv1 10+ year member]

If you are going to go through the trouble and glory or sound deadening your car, i highly suggest adding a layer of closed cell foam. Cover up as much of the vibration mat as you can. Especially in the doors. The less reflections in the doors the better the mids will sound. The only place you might not use the foam on top of damping mat isin very tight spots, like the back of the plastic trim panels. Usually we use an open celled foam for such appliations but as long as the material can compress very well, you will be fine.

Quick questions-

Where (specifically) are you recommending the open-cell foam, and why?

Are you recommending it over colsed-cell foam, and if so, is it due to cost, performance, or both?

Lastly- if the actual door PANEL (the plastic part) is vibrating or rattling, how do you recommend dealing with it- barrier, mass, or both?

 

[Anthony Collova 10+ year member]

Quick questions- Where (specifically) are you recommending the open-cell foam, and why?

Are you recommending it over colsed-cell foam, and if so, is it due to cost, performance, or both?

Lastly- if the actual door PANEL (the plastic part) is vibrating or rattling, how do you recommend dealing with it- barrier, mass, or both?

Open celled foam and closed cell foam should both be used.

Used in different parts of the car to achieve different results.

To keep from typing a bunch of stuff, I am going to copy and paste from our web site and add a bit more to make it specific to this thread:

When applied on top of our Spectrum™ or Damplifier™ vibration dampers,Overkill ( our closed cell foam) filters out airborne sound waves that are able to penetrate the layers below it while reducing distortion causing reflections inside your vehicle.

When applied on the back up upholstery and plastic trim, Overkill creates a rattle reducing barrier that helps create a more solid feel to the driving experience. Just make sure that there is enough space between the upholstery trim and the metal the trim attaches too. Overkill does not compress as well as closed cell foam so if you put it on too thick the panel might not fit back on right

This is the easiest and least expensive step you can take to dramatically enhance your vibration damping results.

This product should primarily be used on top of damplifier to filter out airborne sound waves.

open celled foam.

Once installed, the cushion it creates between panels reduces the air space, allowing each separate panel to function as one single, stronger panel which not only kills rattles, but also helps reduce road noise, engine noise and exhaust noise within the cabin of your car. Rattle Pad also helps keep the music in the car and unwanted noise out. Perfect for under the carpet, on top of headliner and behind doors skins and interior trim.

This is not a product you would use on top of a damper to filter out airborne sound.

Hope that helps

ANT

http://www.secondskinaudio.com

 

[azbass 5,000+ posts]

What he said. God honest truth.

hes a female

 

[Trey803 5,000+ posts]

I am planning on doing my doors which is where most of the rattles are coming from. From what I have heard this is the best place to deaden but how important is it to deaden everywhwre(roof,floor,behind other various panels?)