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15" SUBWOOFEB - TECHNICAL DATA *
Nominal diameter
Magnet weight
Nominal impedance
DC resistance (Re)
Resonance frequency (fs)
Total Q factor (C&s)
Mechanical 0 (Qms)
Electrical Q (Qes)
Equivalent air volume (vas)
Air volume displacement
Effective cone area (Sd)
Compliance (Cms)
Moving mass (Mms)
Voice coil diameter
Voice coil former material
Voice coil induct'ce (@4OOHz)
Linear excursion &nax)
Force factor (Bl)
Acoustical efficiency (No)
Continuous power (Pe)
Sensitivity (SPL)
The VPCl5D woofer offers the best performance/box size compromise using a 3.0
cubic foot Vented box. The Sealed box pushes the -3dB frequency above 50 Hz but
an Infinite Baffle (trunk installation using the rear deck or back of the rear seats) can
offer tremendous results simply due to the pressurization of the car's interior from so
much woofer cone area and movement.
A Single-Vented bandpass box approaching 6.0 cubic feet must be constructed to
provide the -3dB frequency similar to a Vented design. The advantage with the
(Parameter values may deviate slightly'in prcduction units but the perceived perbrrnance variations will be negligible.)
15.0 in (38Omm)
40 oz (1.14kg)
(386 mm)
4 f2 (ea. coil)
3.08 R (ea.)
25 Hz
0.46
8.50
175
0.49
9.50 ft3 (268 ltr's)
0.36 ft3 (10.2 hr's
Woofer outline drawing
132 in2 (0.086m')
2.6 x lo4 M/N
4.8 oz (13591
2.0" (50.8mm)
Kapton polymide
0.85 mH (ea.)
0.35 in (8.9mm)
11.6 Tm
0.98 %
220W (440 peak)
96 dB, 2.83v/lm
93 dB, lW/lm
15.20"
(13
mm)
mm)
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