12”  1280 ACR BLACK MAGIC

FULL RANGE 

  

SPECIFICATION
Nominal Diameter   12 inch
Nominal Impedance   8 ohm
Cone material   Black Paper
Edge   Cloth
Maximum Power   500 watt
Magnet Weight   48.60 Oz
Frequency Response   45 Hz – 3.3 KHz
Sensitivity 1 M / 1 W   95 dB
Voice Coil Diameter   2 inch / 49.5 cm

THIELE SMALL PARAMETER
Resonance Frequency   Fs   45 Hz
DC resistance   Re   6.3 ohm
Mechanical Factor   Qms   6
Electical Factor   Qes   0.47
Total Factor   Qts   0.44
BL Factor   BL   13.1 T/m
Effective moving mass   Mms   45 Gram
Equivalent cas air load   Vas   101.8 Liter
Effective piston area   Sd   510.7 Cm2
Voice coil inductance   Le   0.59 mH
Half space efficiency   Eff   1.90 %

MOUNTING INFORMATION
Overall Diameter  310 mm
Bolt Circle Diameter   294 mm
Bolt Hole Diameter   8 mm
Front Mount   284 mm
Overall depth   127 mm