If you can sacrifice going a bit bigger, 3 cubes tunes to 22Hz should give you good output for HT. Best, Mark  THanks for the reply!  THis would be a EBS alignment for the MAW-12 ?  Any other suggestions for a subwoofer with the above criteria?  This project is for a third party.  The sub will be used for music and home theater use.  EBS usually have some trade offs between upper octave bass and lower.