Specifications:

Power Handling (Rms / Peak):
150 Watts /250 Watts Peak
Frequency: 36 Hz - 1 kHz

Sensitivity (1W / 1M): 87.5dB
Fs: 37Hz / Vas (Liters): 66.5
Qts: 0.84

Details:
PB Paper Subwoofers

Heavy Duty Stamped Steel Frame - Provides the utmost in precision Voice Coil Alignment while ensuring exceptional motor structure support.

Machined Black Top and Back Plate - Provides maximum heat dissipation for extended voice coil life.

Non-Pressed Rigid Composite Cone - Kevlar fiber impregnated paper cone provides the strength and internal damping for the super-low distortion and super-fast transients response.

Double Pressed Foam Surround - Provides outstanding linearity, high sensitivity and maximum x-max.

Extended Vent Pole Piece - Allows maximum heat dissipation from motor structure while eliminating noise and distortion.

Bumped and Dipcut Back Plate - Provides maximum excursion while eliminating voice coil bottoming.

Progressive Flat Spiders - Provides superior voice coil alignment and excursion control.

Customized Rubber Magnet Boot - Provides magnet structure protection while eliminating magnetic loses.