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3.25" Glass Fiber Cone Fullrange


3.25", Steel Frame
0.8" CCAW Voice Coil, Til Former
Glass Fiber Cone, Rubber Surround, Long Excursion(±3.9mm)
Strong Ferrite Magnet Motor System, Pole Piece Vent
Wide Frequency Range
Extended Copper Cap on Pole Piece, Low Distortion(<3%)
3.25 Inch
120 Hz
4.8 Ohms
82 dB
Quality Factor
1.11 Qts
Rated Power
20 W
  • Description
  • Simulation
  • Measure Chart
  • Specification
  • Mechanical Drawing

This 3.25 inch 6 ohm Fullrange driver, with 0.8 inch voice coil copper clad Aluminum wire, TiL 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 reduced distortion. The TiL former, bottom plate and basket under damper 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] 3.715
Electrical Q factor [Qes] 1.59
Total Q factor [Qts]  1.11
Force factor [Bl] 2.91 Tm
Mechanical resistance [Rms] 0.759 kg/s
Moving mass [Mms]  3.75 g
Compliance [Cms] 0.47 mm/N
Effective diaph. diameter [D]  68 mm
Effective piston area [Sd] 36.3 cm²
Equivalent volume [Vas] 0.88 l
Sensitivity (2.83V/1m)  82 dB
Ratio Bl/√Re 1.32 N/√W
Ratio fs/Qts 107.8 Hz
Electrical Data
Nominal impedance [Zn]  6 Ω
Minimum impedance [Zmin]  4.72 Ω
Maximum impedance [Zo] 21.25 Ω
DC resistance [Re] 4.8 Ω
Voice coil inductance [Le]  0.075 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 20.32 mm
Voice coil height 11.8 mm
Voice coil layers 2//2
Height of gap 4 mm
Linear excursion ± 3.9 mm
Max mech. excursion ± 8.5 mm
Unit weight 0.391 kg



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