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Description
This 4 inch 8 ohm Woofer drive with 1 inch voice coil with CCAW wire, Glass fiber former, Kevlar cone and rubber surround. The long-throw voice coil ensures linear high excursion.
Features
- 4”, Aluminum Die-cast Frame
- 1” CCAW Voice coil, Glass-fiber Former
- Kevlar Cone, Rubber Surround
- Ferrite Magnet Motor System
- High Excursion (±5mm)
Parameters
Size
Fs
Re
Sensitivity
Quality Factor
Rated Power
4 Inch
70 Hz
8 Ohms
85 dB
0.8 Qts
15 W
Description
This 4 inch 8 ohm Woofer drive with 1 inch voice coil with CCAW wire, Glass fiber former, Kevlar cone and rubber surround. The long-throw voice coil ensures linear high excursion.
| 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] | 7.0 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) | 85 dB |
| Ratio Bl/√Re | 1.87 N/√W |
| Ratio fs/Qts | 87 Hz |
| Electrical Data | |
|---|---|
| Nominal impedance [Zn] | 8 Ω |
| Minimum impedance [Zmin] | 7.21 Ω |
| Maximum impedance [Zo] | 87.6 Ω |
| DC resistance [Re] | 7.5 Ω |
| Voice coil inductance [Le] | 0.43 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 | 15 mm |
| Voice coil layers | 2 |
| Height of gap | 5 mm |
| Linear excursion | ± 5 mm |
| Max mech. excursion | ± 14 mm |
| Unit weight | 0.755 kg |
