On 06/13/2014 05:19 PM, William Sommerwerck wrote:
Foam does not make sense for acoustic suspension woofers.

If it were porous, it wouldn't make sense for any woofer. But it isn't
particularly porous.

Two major divisions in foam, closed cell, open cell. Open cell is what
we use for microphones pop filters, closed cell for gasketing, etc.