Originally Posted by dmckinney33
Ok, I have heard two different answers on this, how much poly fill for sub boxes? I have heard 1lb of poly for every 1 cubic ft. Of box space, and iv heard 1/2 lb for 1 cubic ft. So what's correct? I have a box that is .80 cubic ft on each side and I was thinking about putting 12 oz, in each side... Would that be right? Too much or too little??? Thanks for the help!
Acousta-Stuf Polyfill Speaker Cabinet Sound Damping Material 1 lb. Bag
Acousta-Stuf is a synthetic material made from crimped fibers. It is an excellent choice for filling or stuffing small enclosures or transmission line cabinets. Long fiber wool has been a favorite among serious speaker builders but Acousta-stuf is less expensive than long fiber wool and does not have the problem of harboring moths. Acousta-Stuf™ will also outperform Dacron, foam, and fiberglass.
Acousta-Stuf is a sound absorption, dampening fiber that will deepen bass, provide cleaner midrange and improve the dynamic extension of any speaker system. There are no health hazards with Acousta-Stuf and no mask or gloves are needed when using this product; the melting point is a very high 490°F. Most sealed and vented enclosures require 1/2 lb. of dampening material per cubic foot of enclosure.
For best results it is recommended to loosely fill the material throughout the enclosure.