Anyone Dynamatted their doors before?

[Evadman]

Originally posted by: MichaelD

Originally posted by: Evadman
I owuld not recomend installing dynomat yourself in the middle of winter. Install it on the hotetst day of the summer.

If you are going to do it in the winter, get a 60k btu kero heater and heat your garage to 110 degrees. Trust me.

Hey there. I have access to a large, heated garage. My garage at my apt is freezing cold, but at my buddies work, it's toasty warm.

Any word on if unrolling that stuff and letting it air out for a week or two will get rid of the stink?

It will not. It takes a good month of high temps to do that. the solvents in the adheasive must all evaporate, which is accelerated in the summer.

 

[MichaelD]

Originally posted by: Evadman

Originally posted by: MichaelD

Originally posted by: Evadman
I owuld not recomend installing dynomat yourself in the middle of winter. Install it on the hotetst day of the summer.

If you are going to do it in the winter, get a 60k btu kero heater and heat your garage to 110 degrees. Trust me.

Hey there. I have access to a large, heated garage. My garage at my apt is freezing cold, but at my buddies work, it's toasty warm.

Any word on if unrolling that stuff and letting it air out for a week or two will get rid of the stink?

It will not. It takes a good month of high temps to do that. the solvents in the adheasive must all evaporate, which is accelerated in the summer.

Damn. Next month would be the perfect time to do it b/c I'm going to have the door panels off anyway.

 

[glen]

I remember reading a Car Audio magazine article that showed Dynamat made no difference. They carried out the test with good sceintific procedures. I have read other articles that suggest it does make a difference, but they have not backed it up with the data.

 

[Howard]

Originally posted by: glen
I remember reading a Car Audio magazine article that showed Dynamat made no difference. They carried out the test with good sceintific procedures. I have read other articles that suggest it does make a difference, but they have not backed it up with the data.

What were the criteria for evaluating the results?

 

Originally posted by: Evadman
I owuld not recomend installing dynomat yourself in the middle of winter. Install it on the hotetst day of the summer.

If you are going to do it in the winter, get a 60k btu kero heater and heat your garage to 110 degrees. Trust me.

:thumbsup:

 

[Pliablemoose]

The thing about these products, (thanks for the link, buck, I'll be buying some Storm
Guard very soon) is that what you;re doing is changing the frequency of the vibrations to one that is less irritatng, and that decibles are measured on a log scale, a small numerical change is a large difference in the real world.

I'm not a super audio freak, but love quieter cars. My pickup is noisey enough, I have a very difficult time hearing normal conversation with my hearing loss.

I've put a couple hundred $ worth of asphalt sheets on the inside of my panel van & it made a significant difference, similar to wrapping electrical tabe on the outside of an empty can.

 

[Howard]

Originally posted by: Pliablemoose
The thing about these products, (thanks for the link, buck, I'll be buying some Storm
Guard very soon) is that what you;re doing is changing the frequency of the vibrations to one that is less irritatng, and that decibles are measured on a log scale, a small numerical change is a large difference in the real world.

Are you sure? I always thought that the shearing of the damping material from the vibration was converted to heat.

By the way, sound pressure (i.e. the power density) is measured on a log scale. Decibels/bels are the units of that scale.

 

[lobadobadingdong]

Originally posted by: glen
I remember reading a Car Audio magazine article that showed Dynamat made no difference. They carried out the test with good sceintific procedures. I have read other articles that suggest it does make a difference, but they have not backed it up with the data.

I have actually been in cars that have had dynomat done, if done right, and installed in the doors, floors, trunk, and firewall, it makes a huge difference.

 

[cavemanmoron]

there was a thread on this in cases and cooling a long time ago..

Something called brown bread was mentioned,and my brain recalled it.


http://www.silentpcreview.com/...mp;artid=32&page=1

.Dynamat is expensive - about $7 per ft². I would need at least 8 ft² to comfortably line the inside of my PC. I was not ready to pay $56 for a product I wasn't positive would work, and there were complaints that Dynamat is smelly.

I searched the web for an alternative and found B-Quiet, a lower priced competitor to Dynamat. The price of about $1 / ft got me excited. One web review claimed 8 dB of noise reduction was achieved by lining the inside of a case. Eight dB was good enough for me to try it, but then I saw that they have another more effective product called Brown Bread.

Brown Bread is described as

A viscoelastic deadener with a supercharged bitumen based adhesive. With an aluminum constraining layer and an unique composition with suspended mineral particles it has been proven to be extremely efficient at the conversion of vibration to thermal energy. Brown Bread is extremely flexible which is very important as it allows it to properly adhere to a contoured panel.

The product page for Brown Bread has a review comparing many different deadening materials, including products from Dynamat. BB comes out on top (surprise surprise!). A higher priced product, Brown Bread is supposed to perform better than B-Quiet. I ordered 70 ft², which cost me about $2.25 / ft². Shipping was free.

 

[MikeMike]

all that dynamat, BrownBread, Peel n Seel do is they add mass to a door. They add density to the door which helps with sound being reflected. It not only helps with speakers, but you WILL notice a difference in road noise too. and i did my whole car and DAMN it made a difference.

MIKE