FSB521540-4808
FSB521540-4808
Standard
4" Carbon Fiber Cone Woofer

FSB521540-4808

Features
4", Steel Frame
1" EISVW Voice Coil, Aluminum Former
Carbon Cone, Rubber Surround
Strong Ferrite Magnet Motor System
Size
4 Inch
Fs
100 Hz
Re
6.88 Ohms
Sensitivity
85 dB
Quality Factor
0.76 Qts
Rated Power
15 W
  • Description
  • Measure Chart
  • Specification
  • Mechanical Drawing
SPEC SHEET

This is a 4 inch 8 ohm driver, it is a Woofer features 1 inch voice coil with EISVW. In term of suspension system, cone is consisted by Carbon Cone body with NBR surround and spider is consisted by Conex. In term of magnet motor system, magnet is consisted by Ferrite material. It can be used on bookshelf audio.

Family
Range
Characteristics
 
T-S Parameters
Resonance frequency [fs] 99 Hz
Mechanical Q factor [Qms] 5.799
Electrical Q factor [Qes] 0.882
Total Q factor [Qts]  0.765
Force factor [Bl] 5.594 Tm
Mechanical resistance [Rms] 0.694 kg/s
Moving mass [Mms]  6.408 g
Compliance [Cms] 0.399 mm/N
Effective diaph. diameter [D]  82 mm
Effective piston area [Sd] 52.8 cm²
Equivalent volume [Vas] 1.573 l
Sensitivity (2.83V/1m)  85 dB
Ratio Bl/√Re 2.14 N/√W
Ratio fs/Qts 129.41 Hz
Electrical Data
Nominal impedance [Zn]  8 Ω
Minimum impedance [Zmin]  6.78 Ω
Maximum impedance [Zo] 29.84 Ω
DC resistance [Re] 6.88 Ω
Voice coil inductance [Le]  0.317 mH
Power Handling
100h RMS noise test (IEC 18.4) 15 W
Long-term max power (IEC 18.2) - W
Voice Coil & Magnet Data
Voice coil diameter 25.4 mm
Voice coil height 7.7 mm
Voice coil layers 2
Height of gap 6 mm
Linear excursion ± 0.85 mm
Max mech. excursion ± - mm
Unit weight 0.907 kg

 

FSB521540-4808

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