Bumper DRC Series Pro Audio Speakers - (0635 DRCB)

Bumper DRC Series Pro Audio Speakers.

Speaker Model: 635 DRCB

Diameter size in inches: 6.5'
Diameter size in centimeters: 16.5
Z=Nominal Impedance in Ohms: 6.5
Fs=Free air resonance frequesncy in Hz: 98.25
Qts=Total Q Factor of driver: 0.477
Vas=Equivalent acoustic volume in cubic feet: 0.692
Vas=Equivalent acoustic volume in liters: 19.59
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: 200
SPL=The half-space ref. Efficiency: 97.42
Voice Coil Diameter in inch: 1.5
Mounting Depth in inch: 2.25
Sd=Piston Area in sq.m: 165.1
BL=T*M Flux Density, Length Product: 8.84
no=The half-space ref. Efficiency 3.40%
Cms=Mechanical Suspen. Compliance: 0.30
Mms=Mech. Mass of cone & free air load: 8.62
Qms=Mechanical Q factor of driver: 5.628
Qes=Electrical Q factor of driver: 0.521
Revc=DC Voice coil resistance in Ohms: 7.6
Zmax=imped. At top of resonance curve in Ohm: 90.21
Frequency response range tested from 20-2000 Hz: 98-6k
Magnet Assembly Weight (oz): 58