Selenium Subwoofer box folded horn with 18SW1P or 18SW2P subwoofer or WPU1805 or WPU1807 woofer (1 piece). Is a folded horn that features excellent perfomance in the bass and sub-bass frequency range which can be used from 40 to 100 Hz with maximum efficiency.

Net internal volume of the 18" low frequency driver chamber: 140 liters.
NOTES:
Medium lenght of the folded horn: 111,7 centimeters.
Perimeter of the mouth of the horn: 205 centimeters.

Cut off Frequency: 18" Speaker: Low: 40 Hz. High: 100 Hz.

Reccomended Crossover: Active, Linkwitz-Riley, 24 dB/oct.

Model: HB1805A1