Standard Transducers


12”, Aluminum Die-cast Frame
3" PESVW Voice Coil, GFB-G For mer
Paper Cone, Rubber Surround
Ferrite Magnet Motor System
High Sensitivity
Copper-shorting Ring
12.0 Inch
34.0 Hz
8 Ohms
93.00 dB
Quality Factor
0.287 Qts
Rated Power
150 W
  • Description
  • Measure Chart
  • Specification
  • Mechanical Drawing

This 12inch 8ohm Woofer driver features a strong ferrite magnet with bump bottom plate and long-throw voice coil, which has high excursion. The distortion can be decreased by AL short circuit ring at low frequency, and the semi-pressed paper cone will make the sound stronger and sonorous. Beyond that, the wonderful collocation of foamed rubber surrounding, CCAW and short circuit ring can provide high SPL and extended high frequency. The cast aluminum frame can provide strong support to ensure no resonance at low frequency. 


T-S Parameters
Resonance frequency [fs]  34Hz
Mechanical Q factor [Qms] 7.5
Electrical Q factor [Qes] 0.299
Total Q factor [Qts]  0.287
Force factor [Bl]  18.47Tm
Mechanical resistance [Rms]  2.43kg/s
Moving mass [Mms]   83.96 g
Compliance [Cms]  0.25mm/N
Effective diaph. diameter [D]  70.13 mm
Effective piston area [Sd]  530.93cm²
Equivalent volume [Vas]  100.59l
Sensitivity (2.83V/1m)   93dB
Ratio Bl/√Re  3.35N/√W
Ratio fs/Qts  118.4Hz
Electrical Data
Nominal impedance [Zn]  8 Ω
Minimum impedance [Zmin]  5.59 Ω
Maximum impedance [Zo] 6.2 Ω
DC resistance [Re] 5.5 Ω
Voice coil inductance [Le]  0.41 mH
Power Handling
100h RMS noise test (IEC 17.1) 150 W
Long-term max power (IEC 17.3) 250 W
Voice Coil & Magnet Data
Voice coil diameter 75.5 mm
Voice coil height 20.5 mm
Voice coil layers 1
Height of gap 13 mm
Linear excursion ± 3.75mm
Max mech. excursion ± -mm
Unit weight 10 kg



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