Standard
4" Mica Cone Woofer
FSI521540-4402
Features
4", Steel Frame
1" EISVW Voice Coil, Glass Fiber Former
Mica Cone, Rubber Surround
Strong Ferrite Magnet Motor System
Linear Spider
Parameters
Size
4 Inch
Fs
95 Hz
Re
3.55 Ohms
Sensitivity
86 dB
Quality Factor
0.75 Qts
Rated Power
10 W
This is a 4 inch 4 ohm driver, it is a Woofer features 1 inch voice coil with EISVW. In term of suspension system, cone is consisted by Paper Cone body with SBR surround and spider is consisted by NC. In term of magnet motor system, magnet is consisted by Ferrite material. It can be used on Woofer model.
Family
Range
| T-S Parameters | |
|---|---|
| Resonance frequency [fs] | 94 Hz |
| Mechanical Q factor [Qms] | 17.137 |
| Electrical Q factor [Qes] | 0.782 |
| Total Q factor [Qts] | 0.748 |
| Force factor [Bl] | 4.411 Tm |
| Mechanical resistance [Rms] | 0.25 kg/s |
| Moving mass [Mms] | 7.23 g |
| Compliance [Cms] | 0.394 mm/N |
| Effective diaph. diameter [D] | 80 mm |
| Effective piston area [Sd] | 50.26 cm² |
| Equivalent volume [Vas] | 0.508 l |
| Sensitivity (2.83V/1m) | 86 dB |
| Ratio Bl/√Re | 2.35 N/√W |
| Ratio fs/Qts | 125.67 Hz |
| Electrical Data | |
|---|---|
| Nominal impedance [Zn] | 4 Ω |
| Minimum impedance [Zmin] | 3.86 Ω |
| Maximum impedance [Zo] | 33.84 Ω |
| DC resistance [Re] | 3.55 Ω |
| Voice coil inductance [Le] | 0.267 mH |
| Power Handling | |
|---|---|
| 100h RMS noise test (IEC 18.4) | 10 W |
| Long-term max power (IEC 18.2) | - W |
| Voice Coil & Magnet Data | |
|---|---|
| Voice coil diameter | 25.4 mm |
| Voice coil height | 11.8 mm |
| Voice coil layers | 2 |
| Height of gap | 6 mm |
| Linear excursion | ± 2.9 mm |
| Max mech. excursion | ± - mm |
| Unit weight | 0.729 kg |
