Quote:
Originally Posted by andrebrito  You need to work with a membrane and a massive air cavity to achieve absorption at those frequencies... wavelength is just too large on those freqs for porous absorption |
wht do you mean by massive air cavity?? and membrane?? what kind of membrane do u suggest?/ and how big should the cavity behind the trap(this is what u mean right) be?? around maybe 3 - 4 inches off the wall??