A Monster Construction Methods Shootout Thread

[NiToNi]

You should get 10kg of Swedag DG-A2 for trying out CLD.

Here's also an interesting (and expired) patent (US7270215B2) you may want to check out.

[diyiggy]

While not being easiest panels to work with, you should consider in your test these : OSB and also chip board. Bamboo ply for wood floor or kitchen table are said to give good result as well.


A bit of topic : I have considered the polystyren 40 mm thick panels for floor and wall. It's very cheap and easy to transport. Need a little imagination for the cuttings though : hot metalic wire acting as a resistor to be heated, or fine saws with round wire (for ceramic for instance), harder being to make the recess behind the driver to let it breath.

[xrk971]

Originally Posted by augerpro

Interesting. Know of a US source?

Basotect for damping BR-cabinet?!

For example:
100 BULK PACK Magic Sponge Eraser Melamine Cleaning Foam 3/4" Thick Ohio eBayer 656841720791 | eBay

Wait 3 weeks and half the price.
100 pcs/lot Melamine Sponge Magic Sponge Eraser Kitchen Melamine Sponge Cleaner Cleaning Sponge for Office Bathroom|nano sponge|magic spongemelamine sponge - AliExpress

[diyiggy]

Usually they use a big square foam to full the enclosure or a mix with rolled acoustilux

[xrk971]

Harbeth uses lots of MKT “chiclets” caps!

[diyiggy]

all chiclets inside

[puppet]

How about cork? You can get it at walmart in sheets from 1/4"-1" in thickness. This is all gonna cost augerpro some cash though fellas. How bout we start a little fund to help finance this endeavor?


I'll donate.

[diyiggy]

cork with rubber has one of the best Young Modulus for damping but not structural hardness enough for a bafle or a cabinet, however why not as the external layer of a front baflre. We are off topic, augerpro can not test all,
It is good enough he is testing the most common wood for loudspeakers cabinets.

[Mindsource]

I think it's good to stick to things that are known to work. Things that externally line the front baffle don't do much absorption to the waves, since absorption happens normal to the wave.

Rigid with high damping is the ideal cabinet spec. Good to test different ply, MDF, and other rigid cabinet materials. Then structural damping in the form of CLD, such as sikabond, sikabond + microspheres, and other viscoelastic materials. Then internal wave damping like fiberglass, cotton, rockwool, etc.

At least that's my .02

[diyiggy]

Yest but expensive in relation to the spirit of the thread. At least without massive contribution and time spent. Most of diyers use Mdf or Ply, for the courageous some veneering permits more choice that often stop with any ply wood on hands or MDF, rarely chip (alas) or osb (alas bis).
There is a a masive thread already at Diyaudio, believe the spirit of this thread is just about testing the most common solutions if I understood.