Equalized Quasi-Sealed System
The Equalized Quasi-Sealed System - EQSS - is a patented method for achieving improved bass response in a
loudspeaker (U.S. Patent 7,894,614). It combines
the best features of a sealed system and a vented system. The method is employed in the Athena
speaker system and also in the EQSS subwoofer, described elsewhere on this site.
A White Paper describing this technique can be found here. It includes much more detail than the earlier description
and also includes several application examples.
EQSS White Paper