Wednesday, November 14, 2007

Mike Dastoli P4

JL Audio Component


12W7 DRIVER SPECIFICATIONS

12W7-3
Free Air Resonance (Fs):
27.2 Hz
Electrical “Q” (Qes):
0.514
Mechanical “Q” (Qms):
7.807
Total Speaker “Q” (Qts):
0.482
Equivalent Compliance (Vas):
2.33 cu. ft. / 66.0 liters
One-Way, Linear Excursion (Xmax)*:
1.15 in. / 29 mm
Reference Efficiency (no):
0.249%
Efficiency (1W/1m)**:
86.2 dB SPL
Effective Piston Area (Sd):
84 sq. in. / 0.0542 sq. m.
DC Resistance (Re):
2.47 ohm
Nominal Impedance (Znom):
3 ohm
Thermal Power Handling (Pt):
750W
Driver Displacement:
0.14 cu. ft. / 4.0 liters
Net Weight:
45 lbs. / 20.4 kg
* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied. ** Efficiency (1W/1m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”.

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