Rubber Undercoating???

[Intraveinous]

In the name of the battle of Good cooling vs. Quiet PC, I have done everything from 7V and 5V Mods and Rheostats, to rubber grommets, to silicone, to ducting. My system is *fairly* quiet now and runs at good temps. I really don't want to slow any of the fans down any more than they already are. Anyway, I was at the Auto parts shop yesterday picking up paint, sandpaper, clearcoat, rubbing compound, etc. and saw "Paintable Rubberized Undercoating". This stuff is supposed to "Prevent Rust and Deaden Noise". I was thinking about putting this stuff on the inside of the case, with the hope that it will deaden a bit of the noise created by the 8 Fans in the case. Has anyone tried this? If so, did it actually deaden noise or would I be better off using Dynamat or foam baffles? Also, did it adversely effect temperatures?
I'll probably end up trying it if no one has before, and will post results if I do.
Thanks in advance
John

[The Overclocker]

i duno, but i recon that Dynamat would be better

[Intraveinous]

This stuff would definately be cheaper, Something like 4 or 5 bucks for a normal size spray can of it. I don't know for sure how much that covers, but dynamatting the case would probably cost me clost to 40 bucks, and add a lot of weight.
So yeah... this is cheaper and lighter, so if it works even close to as well, I'd do this instead..
John

[Patchmaster]

Rockford Fosgate makes something called NoiseBlocker that you can paint or spray on. I've never used it, but I've heard good things about it from audiophiles. Unfortunately, it's not a lot cheaper than Dynamat. A local car audio place ought to be able to get some for you.

[Erode]

AFAIK this paint is commonly used in automotive. Old cars came out without the good sound insulation of these days, so many people painted fenders and bonnets with it.
But it gives a light insulation. Better to say that it doesn't cut all the frequencies the same amount and that the absolute insulation is not great.
Foam panels are a lot more efficacious: if you look the fenders of old and cheap cars you see the paint, whilst on new ones you see panels.

[Intraveinous]

Yeah, it's automotive... (I'm using automotive paint for my case). Hmmm... Seems like it may not be worth it... I was planning on painting the inside of the case anyway though, so I suppose the extra 4 bucks for a can of it wouldn't do any harm... I'll post results once I'm done...
John

[Erode]

I'm very interested on the results, cause I'm in the same trouble.
I'd like to insulate my case but thought that the paint was not so good, but anyway it's cheap and can't hurt!
Please let me know.

[WyrmMaster]

I have thought about doing the same thing myself. Make sure you let us know how well it works.

[Ultra]

A few days ago I went to A & B Sound store here in Canada and bought a sound damping mat from their car stereo department. It's called NoiseKiller, made by Esoteric Audio USA, Inc. (their website is www.eau.com but not much info there). Costs $30 CDN. Probably equivalent to those Dynamat you guys have been talking about.

Anyway, after apply this mat to both of the side panels on my Antec 1030B case, I didn't notice any noise reduction. It's still as noisy as before with that whiny Delta black label + 2 x 43cfm Sunon on front + 2 x generic fan on back. Still hear my computer from a few rooms away :(

Shortly I will upgrade the Delta BB to a Delta 50cfm, move those 2 43cfm Sunons to the back and add 2 50cfm Sunons to the front so the noise problem will be even worse.

[r_stripe]

coming from experience in collision repair...."cars" not computers. I have used plenty of Rubberized undercoating. Its good for doing what it says, undercoating....perfect for underneath cars, frames, and what not.....the down side is, most of the spray can stuff will always remain a little tacky.....you rub up against it two weeks after it has dried and you have a nice black mark on your arm.....not like tar tho....but letting it dry and painting it would eliminate that problem. But the best sound deadening would be to use the sound pads on the larger areas, and use undercoating where you cant reach with pieces of sound pads....Just my couple of words



p.s. it adds a little texture tho. :cool: