^^I'll have to check my Ultimate Platinum charge card bill for it. I know it was too much for VISA though. [img]tongue.gif[/img]

 

Oh man...

You bought it for a sub box or you are doing with it ???

You couldn't find a supplier in N.America ?

 

... I seem to recall a North American vendor or two, I will check monday

 

The primary problem with that particular honeycomb product will be adhesion/ delamination. The aluminum portion may eventually break away from the laminated surface if used in a very dynamic product (like a woofer box).
Another primary concern for this product in this application is bonding. How do you bond one panel to the next at ANY angle and maintain the airtight integrity and the strength and desired rigidity? (Weld? Bolt? Glass it together?) ...remember you cant weld anything with a foam or composite component.

Some of these companies are shells for off shore foreign companies so the made in North America thing could be a ruse. Some manufacturers use foam to fill the voids, some have simpler and more cost conscious designs.
http://www.bellcomb.com/
http://www.freemansupply.com/AluminumHoneycomb.htm
http://www.kmamax.com/kpg1.htm
http://www.mcgillcorp.com/products/main.asp
http://www.protean.com/index.htm
http://www.benecor.org/structures.html all metal canned surface

Canadian
http://www.ccvbc.com/products-services.html

My woofer cone is made of a glass over aluminum honeycomb and it works rather well.

[ December 22, 2004, 05:51 AM: Message edited by: JohnVroom ]

 

bad idea, metal flexes lots, as any audiophile would know this term it "Stores energy" meaning the panels would flex back to norm after the sub is finished its excursion: creating "standing waves" inside the box. These waves can be used to your advantage, if you want a 20+ foot long box, hence they would compound sound waves. but obviously you dont want a 30 foot long box or whatever, so instead, the (box) created a sound wave that (most commonly) cancels out the next significant wave created by the subwoofer, thus lowering SPL, and generally, creating a God-awful sound clarity. Thats why very high end speakers have a well-placed angled "brace" in them to eliminate the Standing waves. anyway, in english, no metal is NOT a good idea. Idealistically Cement makes the best box, since it does not flex WHATSOEVER, but thats not going to happen. so Baltic birch is the next best, since it flexs WAY less then MDF, and it wieghs half as much also.... just so you know

 

I also used to work in a stell fabrication shop & one of the guys who worked there had a steel box made up for his pickup. I think it was only a Boston Acoustics 8" but it fit under his seat & sounded AWESOME!
If you try it, make it heavy & be sure to use a gasket to isolate the woofer from the box. Best of all, if you can make it for free, you can't beat that!
Good luck!