Bumper 1550 C-S Speaker

Series C
Model 1550 C
Diameter size in inches 15
Diameter size in centimeters 38.1
Z - Nominal Impedance in Ohms 8
Fs = Free air resonance frequesncy in Hz 44.9
Qts = Total Q Factor of driver 0.73
Vas = Equivalent acoustic volume in cubic feet 6
Vas = Equivalent acoustic volume in liters 169.43
Xmax = peak linear displacement of cone in inches 0.16
Xmax = peak linear displacement of cone in mm 4.06
Pe = Max power in watts 400
Ref = Driver's SPL 1W at 1m in Db 94.1
SPL = The half-space ref Efficiency 94.1
Voice Coil Diameter in inches 2
Mounting Depth in inches 6
Sd = Piston Area in sq m 0.076
BL = T*M Flux Density, Length Product 10.83
no = The half-space ref effciency 0.0165
Cms = Mechanical suspen Compliance 206.574
Mms = Mech mass of cone & free air load 60.743
Qms = Mechanical Q factor of driver 3.993
Qes = Electrical Q factor of driver 0.9
Revc = DC Voice coil resistance in Ohms 6.16
Zmax = imped At top of resonance curve in Ohms 33.492
Fo = Free air resonance frequency in Hz 44.93
Magnet weight (oz) 50
Magnet weight (kg)