[mythtv-users] Fanless, not only quiet

[Bearcat M. Sandor]

On Monday 08 October 2007 in an email titled "Re: [mythtv-users] Fanless, not 
only quiet" David Brodbeck wrote:
>On Oct 8, 2007, at 2:50 AM, Gene Stapp wrote:
>> The noise you were hearing was vibration being transferred to the
>> metal of your case. Pretty much the only way to get rid of it is
>> through suspending the drives.
>
>Although applying something like Dynamat or B-Quiet to the case
>panels might help.  This stuff is well-known to car audio types, who
>use it for damping panel vibrations caused by subwoofers, and for
>deadening road noise.  Foam absorbs high-frequency noise and stops it
>from being reflected.  Dynamat and products of its type are designed
>to dampen the motion of whatever they're attached to and prevent it
>from resonating and transmitting low-frequency sounds.  I looked into
>it several years ago as a possible solution to making a VW Bus
>bearable for long trips, although I ended up selling the vehicle for
>unrelated reasons before I got around to doing that project.  (Old
>VWs make modern cars sound like the inside of a church by comparison!)
>
>This stuff is not cheap -- it's about $5 per square foot -- but you
>won't need much to do a computer case.  The hard part might be
>getting a small quantity -- most places assume you're going to be
>doing a whole car interior and want to sell you $200 worth.  You
>don't necessarily need to cover every square inch of every panel to
>get a deadening effect.
Wouldn't a lot of the noise just escape out of the fan ports?