12” SUBWOOFER -TECHNICAL DATA
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Nominal diameter
12.0 in (300mm
Magnet weight
40
Nominal impedance
DC resistance (Re)
2.10
Resonance frequency (fs)
34 Hz
Total factor
0.40
Mechanical (Qms)
9.80
Electrical (Qes)
0.42
air volume
(Vas)
3.40 (96.2
Air volume displacement
0.18 (5.1
Effective cone area (Sd)
82.5
Compliance (Cms)
2.3 x
M/N
Moving mass (Mms)
3.1
Voice coil diameter
2.0”
Voice coil former material
Kapton polymide
Voice coil induct’ce
1.50
Linear excursion
(Xmax)
0.25 in (6.4 mm)
Force factor (BI)
9.7 Tm
Acoustical efficiency (No)
0.99 %
Continuous power (Pe)
160W (320 peak:
Sensitivity (SPL)
96
93
outline drawing
woofer response
The PC 12 woofer provides the best performance/box size compromise using a 1.5-2.0
cubic foot Vented box. The Sealed box designs drive the -3dB frequency high
Hz)
but the woofer cone has enough area that it will begin to “pressurize” the car interior
therefore offering strong bass performance. Infinite Baffle mounting (rear deck mounting)
works well for moderate power levels
watts) due to the pressurization principle
noted above.
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(Parameter values may deviate slightly in production units but the perceived performance variations will be negligible.)
1.75 cubic foot Single-Vented
box will offer overall performance about equal
of a Vented box along with greater power handling (100-200 watts). But, for many
the box construction will require above average carpentry skills.
