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TOOSTUBBORN2FAIL 03-31-2013 09:26 PM

Sound Deadening (CLD) Testing
 
So like many other people, I'm tired of wondering what CLD ACTUALLY works best. So I've decided to test a whole spectrum of them, using an accelerometer, so this can be put to rest. This will take between 1-2 months to start, but may be drawn out over time if people want continuing results from new products, etc. Once I have the test rig set up, it wont be that hard to test.

As of right now, I plan to build a box out of baltic birch. It will have two removable baffles, both secured with 10-32 screws, and hurricane nuts. The front baffle will hold two speakers, which will remain unchanged throughout the testing. This will be HAT L6SE's. There will be two front baffles, one completely sealed, aside from speaker mounting holes, and one with two 2" vent holes. The reason for this, is that a sealed box will cause different levels of vibration than one that is just measuring structural vibration, and I want both measurements.

The back baffle will be 22ga 12" squares of mild steel. There will be a new piece of steel for each different CLD. The reason is, removing this stuff could result in bends, and that could change resonant frequency of the baffle. So each CLD test will get its own piece of metal, and each will have before and after measurements, so that deadener effectiveness can be seen as a percentage. I will also post the frequency response of each test, if possible (I need to check one what kind of output I can get from my O-Scope, more on that by friday). Each panel will be bolted on at a set torque with a calibrated torque wrench, to keep that from being an issue. The piece will have a 1/2" perimeter to be bolted down to.

Each CLD piece will be weighed, measured, and photographed multiple times pre and post installation. I may also take video of each test. Samples will all be 6x6" squares, just a tad bit over 25% coverage. Testing will be done indoors, and will be temperature controlled.

I'm open to durability testing, but using the oven is out. New house, and not quite ours yet, means thats not going to happen. I have a torch, but thats a little inconsistent. It does get ridiculously hot here in the summer, I could save all the pieces, then leave them out when its 110 degrees for a week or so.


Once I've gone through the testing to "rank" the deadeners, I will move on to some intall technique tests/alternative deadening techniques tests. Things such as seeing what kind of differences to expect going from 25% coverage to 50% coverage, etc. I'd also like to test using small pieces vs on large equal area sheet. I've seen it suggested that small pieces randomly spaced works just as well, I'd like to prove or disprove that. Then I'd like to test bracing, and bracing+deadening, etc.


If anyone has an input, feel free to let me know. I'd like to get this issue settled.

If anyone wants to donate products, they are more than welcome, I'll post in the first post what I have, and whats been donated, and by who, unless they wish to remain anonymous. All I ask is that pieces donated are 6x6" squares or larger.

I've updated what people might be able to send so far. I want to make sure no one feels any pressure or rush, the soonest I forsee being able to start actually testing is the beginning of May. When I get products in, I'll move them to the corresponding area. I will also start to build the test enclosure this weekend.


Dynamat xtreme - 1 12"x12"
GTMat Pro 50 Mil - 1 12"x12"
GTMat Ultimate 80 Mil - 1 12"x12"
GTMat 110 Mil - 1 12"x12"
GTMat Onyx - 1 12"x12"
Alphadamp - 1 10"x14"
SDS CLD - 1 6"x10"
Stinger Road Kill Pro - 2 6"x6"
Lightning Audio Deadskin - 1 8"x8"
StP Bomb - 1 sheet
StP Gold - 1 sheet
StP Silver - 1 sheet
StP Vizomat - 1 sheet
Peel N Seal - 1/3 Roll

Things that are on the way or have might soon be on the way

Fatmat
second skin damp pro
edead
possibly some cascade V-2
possibly some knu concepts stuff

That leaves me wanting for the test

cascade vmax
maybe some raamat

IDGAF 03-31-2013 09:34 PM

Re: Sound Deadening (CLD) Testing
 
Might I suggest throwing some non-CLD in the mix also? To see the performance difference? Like, FatMat, etc? Maybe even throw some Peel n' Seal in there. Lol.

I can probably get you a few samples. PM me your addy.

Darth SQ 03-31-2013 09:41 PM

Re: Sound Deadening (CLD) Testing
 
So what will be your standard of consistency per CLD piece?
A specific and consistent weight, or a specific and consistent dimension?
Other than that it appears your attempt at removing as many variables as possible is on the right path.
You could even go as far as making sure the ambient temperature is the same during each test since as you say, it will take months to complete which will bring you well into summer. :)
Maybe you could use a spreadsheet to make data comparison from one piece to the next easier since it's likely that the number of test samples will be well into the dozens?
Just a thought.


I look forward to your results :thumbsup:


Bret
PPI-ART COLLECTOR

danno14 03-31-2013 09:49 PM

Re: Sound Deadening (CLD) Testing
 
Pm me too. Not sure what I have kicking around but will participate.

DeanE10 04-01-2013 04:38 AM

Re: Sound Deadening (CLD) Testing
 
Looking forward to this myself :)

GLN305 04-01-2013 08:50 AM

Re: Sound Deadening (CLD) Testing
 
I am in the middle of preparing to move, but I just got in a bulk pack of Stinger Roadkill Pro. I will do my best to get you a sample. When are you wanting to start this test?

TOOSTUBBORN2FAIL 04-01-2013 02:41 PM

Re: Sound Deadening (CLD) Testing
 
IDGAF - I'm actually really hoping to add some products like Peel n' seal and other ashpalt based products. I'll pm you in a little bit.

Bret - Good point on sample consistency and temps, I'll add that info to the first post. I will most likely do a spreadsheet and update it as I go. I'm also hoping to overlay frequency response charts so that it is simple to read and see the actual differences before and after for each sample.

Danno14 and GLN305, I'll pm you guys in a little.

First post updated.

chithead 04-01-2013 03:27 PM

Re: Sound Deadening (CLD) Testing
 
Just ordered some of Sound Deadener Showdown's CLD Tiles. I could "spare a square" for this test.

astrochex 04-01-2013 04:30 PM

Re: Sound Deadening (CLD) Testing
 
I can donate Alphadamp. How many 6"x6" pieces do you need?

You say you will be using 1 in your (initial) test plan. But, for example, if you decide to change the baffle material in mid-testing, you will need more samples.

TOOSTUBBORN2FAIL 04-01-2013 10:31 PM

Re: Sound Deadening (CLD) Testing
 
Chithead and astrochex, that would be awesome, pm me and we'll work it out. Astro, 1-2 pieces would be enough.

Quote:

Originally Posted by astrochex (Post 1855817)
You say you will be using 1 in your (initial) test plan. But, for example, if you decide to change the baffle material in mid-testing, you will need more samples.

Thats a good point. I think for sure that the first tests would be with one 6X6" sheet, using the 22ga steel. However, I would like to compare different percentages of coverage at a later time, so maybe a 6X6" and a 10x10" sheet. But I'll honestly be happy with anything people can donate.

GLN305 04-08-2013 12:08 PM

Re: Sound Deadening (CLD) Testing
 
Two 6x6 squares of Stinger Roadkill Pro on their way for the cause. Thanks for doing this test, the more info we have the better.

schmiddr2 04-08-2013 12:34 PM

Re: Sound Deadening (CLD) Testing
 
Fantastic. Do you have any info about the accelerometer? I'm just wondering if some are designed for certain scales, like fine small movements vs longer movements.

I don't hear much about tiles falling off from heat, but if you do then I'm sure you can find a little $10 toaster on CL. Regardless, hope it goes well.

DeanE10 04-08-2013 12:41 PM

Re: Sound Deadening (CLD) Testing
 
The versions suggested to me when doing tests were:

M302 -IEPE / USB interface; 0.3 to 2000 Hz
(KS76C10 Sensor) KS76C.10(1) -10 mV/g 5%*

Alrojoca 04-08-2013 01:50 PM

Re: Sound Deadening (CLD) Testing
 
Any body have any idea about this company and their MLV, they only do Home sound proof projects, no CLD or CCF used or sold by them. The bad is you need to buy a whole roll of 100Ft, the good is the price is good and it is in my area. The specs seem okay, 1lb per square foot of 1/8 thick. Anybody from this area that want to split a roll assuming it is a good product? :-) I am not sure I will use this on the doors maybe some parts but not all, more than anything I want it to eliminate road noise, floors and real wall or trunk.
Mass Loaded Vinyl

TOOSTUBBORN2FAIL 04-08-2013 02:38 PM

Re: Sound Deadening (CLD) Testing
 
Quote:

Originally Posted by schmiddr2 (Post 1861126)
Fantastic. Do you have any info about the accelerometer? I'm just wondering if some are designed for certain scales, like fine small movements vs longer movements.

I don't hear much about tiles falling off from heat, but if you do then I'm sure you can find a little $10 toaster on CL. Regardless, hope it goes well.

I'll pull it out later and post up everything I can on it. I actually plan to test it this weekend. It was actually a present from my dad, specifically for this testing. If it turns out this one wont work, I will pick up one that will, like the one listed by Dean. My dad will be helping me set up the electrical side of things, and building a power supply so that the amp voltage is consistent.


As far as heat goes, that's more for the asphalt tiles.






Edit - Accelerometer is a SainSmart ADXL 335. 3 axis, mini board, very light weight. I was worried about weight affecting the readings. After I test it, I'll decide whether to use it for this test, or if I need to pick up another one. I may end up needing to pick up another one, as this one only goes from 0.5-550hz on the z axis. I'd rather have more than that, even if vibration fades away before the upper limit.

TOOSTUBBORN2FAIL 04-08-2013 09:50 PM

Re: Sound Deadening (CLD) Testing
 
I can't seem to edit my first post anymore, so here is the current list.

Products that may be coming

Rattletrap
Raamat BXT
GTMat Pro, Onyx, Ultra
Misc STP-Atlantic products
SDS CLD
Alphadamp
Stinger Roadkill Pro

Products in my possesion

1 SDS Tile
1 Lightning Audio Deadskin Tile
1 Alphadamp Tile

Darth SQ 04-08-2013 11:17 PM

Re: Sound Deadening (CLD) Testing
 
Quote:

Originally Posted by TOOSTUBBORN2FAIL (Post 1861562)
I can't seem to edit my first post anymore, so here is the current list.

Products that may be coming

Rattletrap
Raamat BXT
GTMat Pro, Onyx, Ultra
Misc STP-Atlantic products
SDS CLD
Alphadamp
Stinger Roadkill Pro

Products in my possesion

1 SDS Tile
1 Lightning Audio Deadskin Tile
1 Alphadamp Tile

Don't you think Dynamat Xtreme is a must add?


Bret
PPI-ART COLLECTOR

TOOSTUBBORN2FAIL 04-08-2013 11:20 PM

Re: Sound Deadening (CLD) Testing
 
Oh absolutely, these are just the list what people have offered up. Dynamat xtreme and peel n seal will be purchased if no one has any.

Darth SQ 04-08-2013 11:21 PM

Re: Sound Deadening (CLD) Testing
 
Quote:

Originally Posted by TOOSTUBBORN2FAIL (Post 1861605)
Oh absolutely, these are just the list what people have offered up. Dynamat xtreme and peel n seal will be purchased if no one has any.

Tell me exactly how much you need and I'll see what I have left.


Bret
PPI-ART COLLECTOR

req 04-09-2013 07:28 AM

Re: Sound Deadening (CLD) Testing
 
very interested to see the testing methodoligy you use here.

all the tests that don did on SDS before he started selling product.

dissolve test
heat test
cold test
vertical\horizontal\upside down

including your accelerometer test

i wanna say he did them all using a 1"x1" square on a piece of sheet metal.

quality_sound 04-11-2013 05:44 PM

Re: Sound Deadening (CLD) Testing
 
Quote:

Originally Posted by chithead (Post 1855769)
Just ordered some of Sound Deadener Showdown's CLD Tiles. I could "spare a square" for this test.

I can't believe NO ONE picked up on this...

chithead 04-11-2013 05:50 PM

Re: Sound Deadening (CLD) Testing
 
Quote:

Originally Posted by quality_sound (Post 1863738)
I can't believe NO ONE picked up on this...

I was a little disappointed too, but oh well.

Darth SQ 04-11-2013 07:10 PM

Re: Sound Deadening (CLD) Testing
 
Maybe he's away.
SDS is definitely some CLD that I would want to have part of the test.


Bret
PPI-ART COLLECTOR

quality_sound 04-11-2013 07:54 PM

Re: Sound Deadening (CLD) Testing
 
I haven't been able to get a hold of Don for a while so I went with STP.

chithead 04-11-2013 08:01 PM

Re: Sound Deadening (CLD) Testing
 
Really? I emailed him two weeks ago on Wednesday, received a reply back from him Thursday morning, paid that afternoon, and order was shipped out that evening. Was very quick response and shipping.


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