Bumper C Series Pro Audio Speakers - (0835BC)

Bumper C Series Pro Audio Speakers.

Speaker Model: 835 CB

Diameter size in inches: 8'
Diameter size in centimeters: 20.0
Z=Nominal Impedance in Ohms: 8
Fs=Free air resonance frequency in Hz: 107
Qts=Total Q Factor of driver: 0.793
Vas=Equivalent acoustic volume in cubic feet: 1.069
Vas=Equivalent acoustic volume in liters: 30.27
Xmax=peak linear displacement of cone in inch: 0.02
Xmax=peak linear displacement of cone in mm: 0.59
Pe=Max power in watts: 250
SPL=The half-space ref. Efficiency: 97.94
Voice Coil Diameter in inch: 1.5
Mounting Depth in inch: 3
Sd=Piston Area in sq.m: 203.2
BL=T*M Flux Density, Length Product: 7.67
no=The half-space ref. Efficiency: 3.84%
Cms=Mechanical Suspen. Compliance: 0.20
Mms=Mech. Mass of cone & free air load: 10.80
Qms=Mechanical Q factor of driver: 5.724
Qes=Electrical Q factor of driver: 0.921
Revc=DC Voice coil resistance in Ohms: 7.5
Zmax=imped. At top of resonance curve in Ohm: 53.83
Frequency response range tested from 20-2000 Hz: 107-6k
Magnet Assembly Weight (oz): 54