Closing off cavity openings with hard material outperforms absorbing fill.

Evidence

The everyday remedy of filling the cavity with absorbing material helps, but the root problem is still in evidence. Figures 13.7(b) and 13.8(a) show the much improved performance in a mounting where the cavity openings have simply been closed off with hard material. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1484

Categorization

• SHARE: The finding that hard closure beats absorbent fill in a cavity mount would interest anyone doing custom installations or bookshelf placement.