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Bumper RF Series Car Audio Speakers - (0848 RF)

Bumper RF Series Car Audio Speakers

The 848 RF is designed in both 4 ohm and 8 ohm to provide a rich sound for both use in home audio and custom sound designs in car audio. It has a double pressed heavy red foam surround on a rigid and strong cone body , vented pole piece, with a heavy magnet assembly to withstand long hours of play.


SPEAKER MODEL: 848 RF
Diameter size in inches: 8
Diameter size in centimeters: 20.32
Z - Nominal Impedance in Ohms 4
Fs = Free air resonance frequesncy in Hz: 62.5
Qts = Total Q Factor of driver: 0.48
Vas = Equivalent acoustic volume in cubic feet: 0.3
Vas = Equivalent acoustic volume in liters: 8.46
Xmax = peak linear displacement of cone in inches: 0.17
Xmax = peak linear displacement of cone in mm: 4.32
Pe = Max power in watts: 350
Ref = Driver's SPL 1W at 1m in dB: 88.5
SPL = The half-space ref. Efficiency: 88.3
Voice Coil Diameter in inches 2
Mounting Depth in inches: 3 1/2
Sd = Piston Area in sq. m 0.018
BL = T*M Flux Density, Length Product 10.61
 no = The half-space ref. effciency:        0.000
Cms = Mechanical suspen. compliance: 176.482
Mms = Mech. mass of cone & free air load: 36.707
Qms = Mechanical Q factor of driver: 7.225
Qes = Electrical Q factor of driver: 0.4609
Revc = DC Voice coil resistance in Ohms: 3.60
Zmax = imped. At top of resonance curve in Ohms: 60.03
Fo = Free air resonance frequency in Hz: 62.5
Magnet Assembly weight (oz): 106.4
Frequency response range tested from 20-2000 Hz: 20-6200
BOXES FOR 1 SPEAKER APPLICATION RECOMMENDED ENCLOSURES FOR SEALED BOXES (WOOD IS 3/4').
Enclosure size (cubic feet) Outside volume (Vb) 0.75
Enclosure size (liters) Outside volume 21.24
Resonant frequency Hz (Fc) 73.7
Cutoff frequency Hz (F3) 112.26
BOXES FOR 1 SPEAKER APPLICATION RECOMMENDED ENCLOSURES FOR PORTED BOXES (WOOD IS 3/4').
Enclosure size (cubic feet) Outside volume (Vb) 0.8
Enclosure size (liters) Outside volume 21.24
Number of ports on the front of a box 1
Port size (inches) 3x2.95
Turning frequency Hz (Fb) 70.00
Cutoff frequency Hz (F3) 0
   
List price $119.94