Sound Deadener Showdown has closed its doors

60406 Views 174 Replies 52 Participants Last post by angola, 1 mo ago

Chris12

Discussion Starter · Feb 4, 2019

I’ve been trying to get ahold for of Don from SDS to no avail and noticed today that his website was “down for maintenance”.

Well Don finally emailed me back:

“Chris,

I've retired and SDS will not be selling any more materials. Sorry. I'll refund your payment.”

Looks like the provider of the best CLD tiles out there has gone out of business.

Reactions: 3

121 - 140 of 175 Posts

Lanson

· #121 · Feb 19, 2019

rton20s said:
Knu Resonance Control did not perform as well as Dynamat Xtreme or Damplifier Pro. If you want the best bang for your buck, it is still Knu Kolossus. Though, if you live in a really hot climate, there is potential for failure. (Failed at 300F whereas I believe SDS didn't fail at all up to the max testing temp of 400F.) At this point though, it is the current king of the hill for performance in the US since SDS is closed and Silent Coat is no longer available.

I know TS2F has stated his new "go to" will likely be Dynamat Xtreme now that SDS is leaving the market. I reached out to him and it also didn't fail up to 400F, just like SDS.

Just wanted to say:

Kolossus is all I use now, and here in Vegas I've not had a moment of concern with it falling off. In fact, with the Durango, I had it installed on the outside sheet metal of the spare tire well area, mostly because of the need to deaden more aggressively than the inner area would allow. In the 3 years that I had the vehicle, I saw no sign of the deadener releasing in any way at all. Also, Knu is the best stuff I've ever used besides SDS. I liked SDS when I used it, but I got a version that didn't stick so good (early version I think), so I never really re-upped after that. Knu, there's usually a box or two in my possession at all times.

JCsAudio

· #122 · Feb 19, 2019

mulagain said:
so I'm weighing the two before purchasing... no pun intended.

You might like this https://www.parts-express.com/sonic-barrier-lightweight-vinyl-sound-damping-sheet-27-x-40--268-035
I used it on the first go around for my truck and it works very well and it the lightest sound deadening product I have ever used. It compared well to the Second Skin Damplifier I also used at the time.

SkizeR

· #123 · Feb 19, 2019

V8toilet said:
You might like this https://www.parts-express.com/sonic-barrier-lightweight-vinyl-sound-damping-sheet-27-x-40--268-035
I used it on the first go around for my truck and it works very well and it the lightest sound deadening product I have ever used. It compared well to the Second Skin Damplifier I also used at the time.

that stuff is sorta like the cascade product i used in the cadillac build. wasnt to bad. Only problem was installation was much more of a hassle vs cld, but it did have some pretty good end results. cant speak on how it holds up to heat though

JCsAudio

· #124 · Feb 19, 2019

SkizeR, It’s been in the doors of my truck for three summers now and when I took the door panels off recently to swap speakers it was all still there.

SkizeR

· #125 · Feb 19, 2019

V8toilet said:
SkizeR, It’s been in the doors of my truck for three summers now and when I took the door panels off recently to swap speakers it was all still there.

well thats good that it didnt up and walk away

seafish

· #126 · Feb 19, 2019 (Edited)

Im going to chip in something about the KnuKonceptz Kolossus.

While SDS has been my go to for CLD and other prducts, simply do the quality of the material and Don's customer service, I have also used KKK to good effect with quick and easy shipping from Amazon.

More importantly, I believe that the KKK can ALSO serve as a sound barrier and enhance the effects off MLV simply because it weighs almost as much per sq foot as 1#/SF MLV. The KKK weighs in at .89#/SF, which means that it is ALMOST as dense as 1#/SF MLV or sheet lead. DENSITY, in addition to structural isolation, is the OTHER most important ingredient to blocking sound wave travel.

I mean, material DENSITY is EXACTLY why both MLV and sheet lead work as well as they do to block sound..they are both extremely dense materials that can be applied in a relativelyy thin, relatively continuous layer in order to block sound. Concrete also works, but it is nether thin or easy to apply in a car...LOL!!!

What I am suggesting is that while clearly the KKK works as an effective CLD (albeit with the caveat that it might not have the top temp resistance as SDS or Dynamat Xtreme does, it ALSO has a fairly high density that the other CLD do not necessarily have. Of course to take advantage of its density as a sound blocker, you WOULD need to use 100% coverage with it , just like the MLV you are applying, but unlike it's use as a CLD where Don and others correctly pointed out about the loss of cost efficiency gains using more then 30% CLD coverage simply in order to reduce panel resonance.

That being said, if the KKK in fact functions like MLV or sheet lead simply due to its density, and I have little doubt that it would, and one can afford the extra weight, coverage and expense of using it at 100%, I do believe that it will nearly double the sound blocking effects of using MLV alone. Or one could use it at 100% coverage and then apply only 1/2#/SF MLV in order to save some weight and thickness to make reapplying panels easier but still have MORE then effectiveness if using 1#/SF MLV with another type of CLD.

Just some food for thought!!!

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SkizeR

· #127 · Feb 19, 2019

Just a reminder, weight doesnt do much if it isnt isolated from vibration. I'm sure it does something, but not nearly as much as decoupled mlv

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K-pop sucks

· #128 · Feb 19, 2019

I'll go KKK for my next CLD binch. I've covered most my car with the 30% panel coverage for rule of thumb. Is there honestly much loss in noise absorbtion by not doing full coverage with CLD as a shield?

Current setup minimum coverage: 30% SDS CLD + SS ultra luxury MLV+ melamine foam 1/2" - 1"+ thinsulate 600L.

seafish

· #129 · Feb 19, 2019 (Edited)

SkizeR said:
Just a reminder, weight doesnt do much if it isnt isolated from vibration. I'm sure it does something, but not nearly as much as decoupled mlv

Sent from my SM-G950U1 using Tapatalk

You are correct, but I am not talking about weight, but instead MASS or DENSITY, which by definition is weight/volume. And mass alone DOES block sound...think concrete wall next to a freeway.

Furthermore, though ISOLATION is not its primary purpose, CLD does in fact have some isolation properties due to its elastomeric butyl rubber layer. That is another reason wy I feel that KKK as a CLD, will also lend itself to blocking sound...it isolates and is dense, though not quite as dense as 1#/SF MLV and of course it would still need to be used in %100 coverage in order to utilize a sound blocking effect.

preston

· #130 · Feb 19, 2019

There is only one answer - you must test it and let us know the noise transmission of it versus MLV.

SkizeR

· #131 · Feb 19, 2019

preston said:
There is only one answer - you must test it and let us know the noise transmission of it versus MLV.

thats what im getting at. i think layering up a bunch of cld could work to help block noise, but even at the same weight and coverage i dont think it would be nearly as effective as decoupled mlv, due to the cld not being as decoupled as the MLV with ccf

K-pop sucks

· #132 · Feb 19, 2019 (Edited)

I'm interested in how much of a measurable difference there is by doing 100% CLD coverage vs 30% CLD coverage with CCF/MLV on top.

Are the noise absorbtion of partial CLD on par or better than full coverage when paired with melamine foam or thinsulate.

rob feature

· #133 · Feb 19, 2019

seafish said:
You are correct, but I am not talking about weight, but instead MASS or DENSITY, which by definition is weight/volume.

The difference in mass and weight is that you factor in a gravitational constant for weight. Mass is the same no matter where you go. Weight will depend on gravity. Density = mass over volume.

Lanson

· #134 · Feb 19, 2019

There are a bunch of new brands on the scene, some not-so-new but now on Amazon. Now, personally, every time I try a new brand I end up going back to Knu, but brands like Vibro catch my eye.

Recent brands to skip - Noico (all of it) and Reckhorn

seafish

· #135 · Feb 19, 2019 (Edited)

rob feature said:
The difference in mass and weight is that you factor in a gravitational constant for weight. Mass is the same no matter where you go. Weight will depend on gravity. Density = mass over volume.

OK, thanks for clarifying the terminology, but I do not think that it changes the basic relationship between a material's density and its ability to block sound transmision nor the fact that KKK is almost as dense as MLV, at least when used at the same altitude at the same time, right??

seafish

· #136 · Feb 19, 2019 (Edited)

SkizeR said:
thats what im getting at. i think layering up a bunch of cld could work to help block noise, but even at the same weight and coverage i dont think it would be nearly as effective as decoupled mlv, due to the cld not being as decoupled as the MLV with ccf

But Justin did recently post his technical research paper showing that decoupling MLV with CCF did NOT make an effective difference from using MLV with simply an airspace between it and the CLD, or rather just loosely hanging it. Of course, that is not ways possible un a vehicle, especially on the floor.

https://www.diymobileaudio.com/foru...ight-material-decouple-mass-loaded-vinyl.html

seafish

· #137 · Feb 19, 2019 (Edited)

preston said:
There is only one answer - you must test it and let us know the noise transmission of it versus MLV.

For sure, that is one of the ways to test the idea.
I was hoping that JZ might step up to the plate again!! LOL.

seafish

· #138 · Feb 19, 2019

K-pop sucks said:
I'm interested in how much of a measurable difference there is by doing 100% CLD coverage vs 30% CLD coverage with CCF/MLV on top.

Just to be clear, I am not trying to confuse the issue between using CLD as a resonance inhibitor and MLV as a sound blocker, but am wondering if using a more dense CLD at 100% coverage will also help to block more sound transmission as well. My gut feeling is that it will!!!

ManBearPig

· #139 · Feb 19, 2019

I dont understand why some people still go with 100% coverage when it's been proven 25% is just as effective

SkizeR

· #140 · Feb 19, 2019

ManBearPig said:
I dont understand why some people still go with 100% coverage when it's been proven 25% is just as effective

Not just as effective, but its where diminishing returns starts

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