4 DD-9912 6th Blow Thru

DIY BLUEPRINT FOR 4 DD AUDIO 9912 SUBWOOFERS IN 6th ORDER BANDPASS
**This blueprint is in metric

FRONT CHAMBER
VOLUME: 6.5cf net
TUNING: 52Hz
PORT AREA: 107.64in^2
(16.56in per cube)

REAR CHAMBER
VOLUME: 3cf net
TUNING: 26Hz
PORT AREA:19.63in^2
(6.54in per cube)

DIMENSIONS
Width: 1098.5mm
Height: 444.5mm
Depth: 1098.5mm