90mm x 27mm Paper Cone Woofer


Dolby Atmos enabled
90mm x 27mm, Steel Frame
0.5" CCAW Voice Coil, Aluminum Former
Paper Cone, Rubber Surround
Dual Neodymium Magnet Motor System
VC Former and Basket Vent, Low Distortion(<3%)
2 Inch
205 Hz
7.4 Ohms
80 dB
Quality Factor
0.92 Qts
Rated Power
15 W
  • Description
  • Measure Chart
  • Specification
  • Mechanical Drawing

This is a 90mm x 27mm 8 ohm driver, it is a woofer features 0.5 inch voice coil with CCAW. In term of suspension system, cone is consisted by Paper Cone body with NBR surround and spider is consisted by Conex. In term of magnet motor system, magnet is consisted by Neodymium material. It can be used on Atmos Soundbar model.

T-S Parameters
Resonance frequency [fs] 204 Hz
Mechanical Q factor [Qms] 4.18
Electrical Q factor [Qes] 1.17
Total Q factor [Qts]  0.92
Force factor [Bl] 3.15 Tm
Mechanical resistance [Rms] 0.38 kg/s
Moving mass [Mms]  1.24 g
Compliance [Cms] 0.49 mm/N
Effective diaph. diameter [D]  76 x 20 mm
Effective piston area [Sd] 14.34 cm²
Equivalent volume [Vas] 0.13 l
Sensitivity (2.83V/1m)  80 dB
Ratio Bl/√Re 1.16 N/√W
Ratio fs/Qts 221.73 Hz
Electrical Data
Nominal impedance [Zn]  8 Ω
Minimum impedance [Zmin]  6.84 Ω
Maximum impedance [Zo] 25.78 Ω
DC resistance [Re] 7.4 Ω
Voice coil inductance [Le]  0.18 mH
Power Handling
100h RMS noise test (IEC 18.4) 15 W
Long-term max power (IEC 18.2) 20 W
Voice Coil & Magnet Data
Voice coil diameter 13.28 mm
Voice coil height 4.4 mm
Voice coil layers 4
Height of gap 2 mm
Linear excursion ± 1.2 mm
Max mech. excursion ± - mm
Unit weight 0.039 kg



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