[kinku]

Hi can someone share where to get good quality damping materials at reasonable price?

[WGH]

I'm a fan of Home Depot's self stick floor tile for the interior speaker cabinet walls,
then glue on 1" open cell foam from a fabric store,
and then stuff the box with pillow stuffing or Kapok.
Use 3M Hi-Strength 90 on both the self stick tile (added insurance) and the open cell foam to hold it all together.

Wayne

[kinku]

What about fiberglass?

[WGH]

What about fiberglass?

That works too and is what has traditionally been used for 50 years.

[Letitroll98]

Acousta-Stuf Polyfill Speaker Cabinet Damping Material
http://www.parts-express.com/pe/showdetl.cfm?partnumber=260-330

Sonic Barrier 1-1/4" 3-Layer Damping Material
http://www.parts-express.com/pe/showdetl.cfm?partnumber=260-535

No Rez
http://gr-research.com/norez24x27sheet.aspx

[TRADERXFAN]

There are methods of construction you can try to incorporate as well, depending on your capability and application.

Whatcha makin'?

[kinku]

 Thanks,Where can I find 1.5 inch and 2inch diameter vent pipes? Also little perplexed to see that MDF and Oak has comparable density ,still MDF is recommended for enclosure and not Oak wood?
Traderxfan I am making a SDFR with 4-5 INCH driver,Not decided on which one yet.I may have to fill more than 50 percent box with damping material since my purpose is to get a better midrange response.

[WGH]

Ports (vent pipes)
http://www.parts-express.com/cat/port-tubes/320

Oak would work for speaker cabinets but you will have to allow for seasonal wood movement. An oak front baffle will move almost 1/8" per foot across the grain, the length moves very little with humidity changes. If the solid wood front baffle is about 6"wide or less you will be OK (maybe).

A cabinet made from MDF can be veneered with any type of wood or painted which is why manufacturers use MDF, it is also more stable, stays flat, no milling and less sanding. An oak box would probably take at least twice as long to construct too.

Wayne

[kinku]

Thanks Wayne.I was almost planning to buy Oak from homedepot. Now everything to MDF.Is it difficult to work with MDF.Need special cutting tools?

[TRADERXFAN]

Most people prefer voidless baltic birch over mdf, when in budget/available. mdf is generally considered to be nasty stuff but easy to work with.

Also not sure if the damping material is for internal reflections (stuffing) or cabinet resonance (bracing, Constrained Layer Damping techniques, pliable membranes like blackhole/norez)

[kinku]

Baltic birch sounds great but do not know any source who has it.not planning to buy wood online.
Damping is for inside and the box volume is around 0.38 cubic feet.So not sure bracing can be easy. It will be for a SDFR driver.

[WGH]

Now everything to MDF.Is it difficult to work with MDF.Need special cutting tools?

For your small project, no special tool required.

Unless you really, really want to learn cabinet making may I suggest ordering pre-made enclosures from Parts Express. Prices are from $84.85 to $108.98 for a 0.38 cubic foot box. I could never build such a good looking cabinet for so little money.
http://www.parts-express.com/cat/hi-fi-speaker-cabinets/288

[kinku]

I am considering it as an option vs the thrill of building one up. I may end up buying this.

[DS-21]

Hi can someone share where to get good quality damping materials at reasonable price?

What's the goal?

If it's cabinet rigidity, try a viscoelastic compound sandwiched between two relatively thin ply/MDF panels. Car-fi shops offer that kind of thing as a sound deadener, to either be brushed or sprayed on.

If it's absorption of midrange resonances and/or lowering the the system Q, then I prefer Bonded Logic Ultratouch recycled denim insulation. It's basically equivalent to fiberglass, but much less annoying to work with. (Fiberglass insulation also works excellently, and is much cheaper. But I can't be around the stuff without my eyes watering, my nose running, and my arms itching. Others are more tolerant.) Home Depot sells the stuff online. Perhaps there are other sources as well in your area.

[kinku]

It is going to be a small 0.38 CF enclosure for Full range speaker. So I guess minus the issues with itching and irritation Fiberglass is one choice.and then Bonded Logic Ultratouch recycled denim insulation is the next best minus irritation?

[mikeeastman]

I used the Ultratouch in some acoustical panels and in a sub it worked great.

[kinku]

After a little bit of research it seems to me like the damping property of materials is related to the density.Most fiberglass types have a density from 0.5-0.9Lb/cubic feet.Ultratouch website says density of 1.2 Lb/cubic feet.Amazing .Can someone verify this?
http://www.bondedlogic.com/construction-products/ultratouch-denim-insulation

Look in UltraTouch™ CSI 3 Part Spec