Standard
4” Kevlar Cone Woofer
FSB224040-0800
Features
4”, Aluminum Die-cast Frame
1” CCAW Voice Coil, Glass Fiber Former
Kevlar Cone, Rubber Surround, Long Excursion(±5mm)
Ferrite Magnet Motor System
VC Former and Bottom Plate Vent, Low Distortion(<3%)
Parameters
Size
4 Inch
Fs
70 Hz
Re
7.5 Ohms
Sensitivity
83 dB
Quality Factor
0.8 Qts
Rated Power
30 W
This is a 4 inch 8 ohm driver, it is a Woofer features 1 inch voice coil with CCAW. In term of suspension system, cone is consisted by Kevlar Cone body with NBR surround and spider is consisted by NC. In term of magnet motor system, magnet is consisted by Ferrite material. It can be used on bookshelf audio.
Family
Range
| T-S Parameters | |
|---|---|
| Resonance frequency [fs] | 69.9 Hz |
| Mechanical Q factor [Qms] | 9.538 |
| Electrical Q factor [Qes] | 0.881 |
| Total Q factor [Qts] | 0.807 |
| Force factor [Bl] | 5.115 Tm |
| Mechanical resistance [Rms] | 0.322 kg/s |
| Moving mass [Mms] | 7.001 g |
| Compliance [Cms] | 0.741 mm/N |
| Effective diaph. diameter [D] | 85 mm |
| Effective piston area [Sd] | 56.75 cm² |
| Equivalent volume [Vas] | 3.3749 l |
| Sensitivity (2.83V/1m) | 83 dB |
| Ratio Bl/√Re | 1.87 N/√W |
| Ratio fs/Qts | 87 Hz |
| Electrical Data | |
|---|---|
| Nominal impedance [Zn] | 8 Ω |
| Minimum impedance [Zmin] | 7.3 Ω |
| Maximum impedance [Zo] | 61.89 Ω |
| DC resistance [Re] | 7.5 Ω |
| Voice coil inductance [Le] | 0.43 mH |
| Power Handling | |
|---|---|
| 100h RMS noise test (IEC 18.4) | 30 W |
| Long-term max power (IEC 18.2) | - W |
| Voice Coil & Magnet Data | |
|---|---|
| Voice coil diameter | 25.4 mm |
| Voice coil height | 15 mm |
| Voice coil layers | 2 |
| Height of gap | 5 mm |
| Linear excursion | ± 5 mm |
| Max mech. excursion | ± - mm |
| Unit weight | 0.755 kg |
