FSISD1550-0401
FSISD1550-0401
FSISD1550-0401
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5.25" Ultra-Thin Series Woofer

FSISD1550-0401

Feature
5.25", Plastic Frame
1" CCAW Voice Coil, Aluminum Former
Aluminum Cone, Rubber Surround
Aluminum Dust Cap
Slim Design (Patented)
Pole Piece Vent, Low Distortion(<3%)
Size
5.25 Inch
Fs
75 Hz
Re
4 Ohms
Sensitivity
85 dB
Quality Factor
0.5 Qts
Rated Power
15 W
  • Description
  • Simulation
  • Measure Chart
  • Specification
  • Mechanical Drawing
SPEC SHEET

This 5.25 inch 4 ohm Woofer driver, with the black anodized Aluminium cone. A dual suspension(patented) driver, with elimination of the limits from traditional single suspension driver, resulted in more diverse and slim design.The voice coil former and pole piece are vented holes so as to reduce air compression under high excursion condition.

Family
Range
Characteristics
FSISD1550-0401

T-S Parameters
Resonance frequency [fs] 75 Hz
Mechanical Q factor [Qms] 4.488
Electrical Q factor [Qes] 0.573
Total Q factor [Qts]  0.508
Force factor [Bl] 6.807 Tm
Mechanical resistance [Rms] 1.695 kg/s
Moving mass [Mms]  16.453 g
Compliance [Cms] 0.284 mm/N
Effective diaph. diameter [D]  107.7 mm
Effective piston area [Sd] 91.1 cm²
Equivalent volume [Vas] 3.338 l
Sensitivity (2.83V/1m)  85 dB
Ratio Bl/√Re 3.644 N/√W
Ratio fs/Qts 144.88 Hz
Electrical Data
Nominal impedance [Zn]  4 Ω
Minimum impedance [Zmin]  3.9 Ω
Maximum impedance [Zo] 20.72 Ω
DC resistance [Re] 3.49 Ω
Voice coil inductance [Le]  0.712 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 25.4 mm
Voice coil height 12.9 mm
Voice coil layers 4
Height of gap 6 mm
Linear excursion ± 3.45 mm
Max mech. excursion ± - mm
Unit weight 0.65 kg

 

FSISD1550-0401

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