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Description
This 4 inch 8 ohm Woofer driver features a powerful ferrite magnet motor system, with Aluminum shorting ring to lower coil inductance and distortion. The long-throw voice coil ensures linear high excursion. The die cast frame offers structural rigidity, heat sinking capacity for motor, and additional air venting under spider so as to reduce air compression effects.
Features
- 4", Aluminum Die-cast Frame
- 1" CCAW Voice Coil, Glass Fiber Former
- Coated Paper Cone, Rubber Surround, Long Excursion(±5.2mm)
- Ferrite Magnet Motor System
- Wide Frequency Range
- With Aluminum Shorting Ring, Low Distortion(<3%)
Parameters
Size
Fs
Re
Sensitivity
Quality Factor
Rated Power
4 Inch
80 Hz
8 Ohms
84 dB
0.79 Qts
30 W
Description
This 4 inch 8 ohm Woofer driver features a powerful ferrite magnet motor system, with Aluminum shorting ring to lower coil inductance and distortion. The long-throw voice coil ensures linear high excursion. The die cast frame offers structural rigidity, heat sinking capacity for motor, and additional air venting under spider so as to reduce air compression effects.
| T-S Parameters | |
|---|---|
| Resonance frequency [fs] | 80 Hz |
| Mechanical Q factor [Qms] | 7.797 |
| Electrical Q factor [Qes] | 0.885 |
| Total Q factor [Qts] | 0.795 |
| Force factor [Bl] | 5.27 Tm |
| Mechanical resistance [Rms] | 0.411 kg/s |
| Moving mass [Mms] | 6.326 g |
| Compliance [Cms] | 0.617 mm/N |
| Effective diaph. diameter [D] | 83.5 mm |
| Effective piston area [Sd] | 54.76 cm² |
| Equivalent volume [Vas] | 2.619 l |
| Sensitivity (2.83V/1m) | 82 dB |
| Ratio Bl/√Re | 1.9 N/√W |
| Ratio fs/Qts | 100.6 Hz |
| Electrical Data | |
|---|---|
| Nominal impedance [Zn] | 8 Ω |
| Minimum impedance [Zmin] | 8.43 Ω |
| Maximum impedance [Zo] | 56.22 Ω |
| DC resistance [Re] | 7.6 Ω |
| Voice coil inductance [Le] | 0.349 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 | 15.4 mm |
| Voice coil layers | 2 |
| Height of gap | 5 mm |
| Linear excursion | ± 5.2 mm |
| Max mech. excursion | ± 13 mm |
| Unit weight | 0.762 kg |
