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3" Glass Fiber Cone Fullrange


3", Steel Frame
0.8" CCAW Voice Coil, Aluminum Former
Damped Glass Fiber Cone, Rubber Surround
Strong Ferrite Magnet Motor System, Pole Piece Vent
Wide Frequency Range, Whizzer Cone
Extended Copper Cap on the Pole Piece, Low Distortion (<3%)
3 Inch
120 Hz
8 Ohms
83 dB
Quality Factor
0.75 Qts
Rated Power
20 W
  • Description
  • Simulation
  • Measure Chart
  • Specification
  • Mechanical Drawing

This 3 inch 8 ohm Fullrange driver, with 0.8 inch voice coil copper clad Aluminum wire, Aluminum former, damping glue coated glass fiber cone and  rubber surround. It contains copper shorting cap on pole piece, which reduces coil inductance, thus providing both extended frequency response performance and reduce distortion. Whizzer cone in center can increase HF output. The Aluminum former, bottom plate and basket under spider are all vented hole so as to reduce air compression effects and aid cooling of the motor under high excursion conditions.


T-S Parameters
Resonance frequency [fs] 120 Hz
Mechanical Q factor [Qms] 2.62
Electrical Q factor [Qes] 1.06
Total Q factor [Qts]  0.75
Force factor [Bl] 4.12 Tm
Mechanical resistance [Rms] 0.98 kg/s
Moving mass [Mms]  3.42 g
Compliance [Cms] 0.52 mm/N
Effective diaph. diameter [D]  60 mm
Effective piston area [Sd] 28.27 cm²
Equivalent volume [Vas] 0.59 l
Sensitivity (2.83V/1m)  83 dB
Ratio Bl/√Re 1.561 N/√W
Ratio fs/Qts 158.8 Hz
Electrical Data
Nominal impedance [Zn]  8 Ω
Minimum impedance [Zmin]  7.1 Ω
Maximum impedance [Zo] 32.49Ω
DC resistance [Re] 6.96 Ω
Voice coil inductance [Le]  0.071 mH
Power Handling
100h RMS noise test (IEC 18.4) 20 W
Long-term max power (IEC 18.2) - W
Voice Coil & Magnet Data
Voice coil diameter 20.3 mm
Voice coil height 8.1 mm
Voice coil layers 4
Height of gap 3.5 mm
Linear excursion ± 2.3 mm
Max mech. excursion ± - mm
Unit weight 0.433 kg



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