4 X-18 6th Blow Thru

DIY BOXPLANS - 4 SUNDOWN AUDIO X-18 SUBWOOFERS IN 6th ORDER BANDPASS
Designed for long wheelbase trucks

FRONT CHAMBER
VOLUME: 20.25cf net
TUNING: 50Hz
PORT AREA: 424in^2
(20.94in per cube)

REAR CHAMBER
VOLUME: 16cf net
TUNING: 25Hz
PORT AREA: 113.08in^2
(7.07in per cube)

DIMENSIONS
Width: 49-1/2in
Height: 23-1/2in
Depth: 76-1/2in

Subwoofer Max Mounting Depth: 10-1/2in