i have a 2.3 cube ported box made of one layer of 3/4 mdf. it has no leaks, but i notice that the box vibrates a fair amount. would it make sense to dynamat the inside? or would this kill my sq?

I have never heard of someone dynamatting the inside of the box.

Maybe try a new box with a double baffle if you don't have one already.

im pretty sure it wont help it at all.

add some bracing to the box. another baffle maybe

Physical bracing will be more efficient. A cheap way to do bracing is use all thread, or use wood bracing, your pick.

Ihave seen dynamat sandwiched between two pieces of MDF but that idea didn't stay around to long. Bracing is the best thing.

What do you mean? flexing?

Ihave seen dynamat sandwiched between two pieces of MDF but that idea didn't stay around to long. Bracing is the best thing.

That method is still going strong, it is a kind of advanced building method called "constrained layer dampening" CLD, something, I've got teflon memory these days. You can also use sand, liquid nails etc, etc between the layers. Do a search for "Tangen mighty sub" I hope will do the trick, it's famous in DIY circles made in Norway based on a single JBL.

I cannot say though if CLD is better or on par with bracing, so I would as others have done, recommend bracing, shelf bracing.

Edited December 12, 200816 yr by buggsson