Servo Sub Kit 1
This package comes with a single SW-12-04 servo woofer and the HX310 amp.
This design is for sealed box applications using 1.5 to 1.8 cubic feet of air space. This combination is the least expensive way to get into the higher performance levels of servo controlled bass response. The HX310 amp has all the key features necessary to allow easy blending to main speakers. And with 300 watts of power it can deliver solid SPL levels that reach down into the teens.
Cabinet plans for the "Sand Box" (sand filled box) DOWNLOAD
Here is an Audio Circle thread on the "Sand Box" with pics.
Lining the cabinet walls with No Rez really helps minimize cabinet resonances and provides a cleaner and smoother sound. A sealed box cabinet will require 1 sheet.