12" 1240  ACR Classic
Full Range

Nominal Diameter   6 inch
Nominal Impedance   8 ohm
Cone material   Transparent Polypropylene Edge
Maximum Power   60 watt
Magnet Weight   10 Oz
Frequency Response   63 Hz – 6.5 KHz
Sensitivity 1 M / 1 W   88 dB
Voice Coil Diameter   1 inch / 2.54 cm

THIELE SMALL PARAMETER
Resonance Frequency   Fs   63 Hz
DC resistance   Re   4.9 ohm
Mechanical Factor   Qms   4.09
Electical Factor   Qes   1.18
Total Factor   Qts   0.92
BL Factor   BL   4.4 N/A
Effective moving mass   Mms   11.7 Gram
Equivalent cas air load   Vas   10.6 Liter
Effective piston area   Sd   116.9 Cm2
Voice coil inductance   Le   0.21 mH
Half space efficiency   Eff   0.21 %

MOUNTING INFORMATION
Overall Diameter  164.8 mm
Bolt Circle Diameter   156 mm
Bolt Hole Diameter   5 mm
Front Mount   143 mm
Overall depth   64.5 mm