This 4 inch Aluminum Alloy woofer, Aluminum Die-Cast Frame with Mg-Li Alloy cone. It has good process
ability and high yield for mass production. Because of this special raw material structure and unique
processing technology, from magnesium lithium metal foil, the attributes of Magnesium Lithium offer
high strength, good rigidity, good heat resistance, low density and so on.
- 4”, Aluminum Die-cast Frame
- 1” CCAW Voice Coil, Aluminum Former
- Mg-Li Alloy Cone, Rubber Surround
- Ferrite Magnet Motor System
- Target Frequency 40Hz~5KHz
- Low Distortion (<1%)
This 4 inch Aluminum Alloy woofer, Aluminum Die-Cast Frame with Mg-Li Alloy cone. It has good process
ability and high yield for mass production. Because of this special raw material structure and unique
processing technology, from magnesium lithium metal foil, the attributes of Magnesium Lithium offer
high strength, good rigidity, good heat resistance, low density and so on.
| T-S Parameters | |
|---|---|
| Resonance frequency [fs] | 61.4 Hz |
| Mechanical Q factor [Qms] | 3.565 |
| Electrical Q factor [Qes] | 0.456 |
| Total Q factor [Qts] | 0.404 |
| Force factor [Bl] | 4.35 Tm |
| Mechanical resistance [Rms] | 0.742 kg/s |
| Moving mass [Mms] | 6.858 g |
| Compliance [Cms] | 0.979 mm/N |
| Effective diaph. diameter [D] | 82.5 mm |
| Effective piston area [Sd] | 53.46 cm² |
| Equivalent volume [Vas] | 3.96 l |
| Sensitivity (2.83V/1m) | 88 dB |
| Ratio Bl/√Re | 2.42 N/√W |
| Ratio fs/Qts | 151.98 Hz |
| Electrical Data | |
|---|---|
| Nominal impedance [Zn] | 4 Ω |
| Minimum impedance [Zmin] | 3.9 Ω |
| Maximum impedance [Zo] | 27 Ω |
| DC resistance [Re] | 3.26 Ω |
| Voice coil inductance [Le] | 0.046 mH |
| Power Handling | |
|---|---|
| 100h RMS noise test (IEC 18.4) | 35 W |
| Long-term max power (IEC 18.2) | 50 W |
| Voice Coil & Magnet Data | |
|---|---|
| Voice coil diameter | 25.5 mm |
| Voice coil height | 12.5 mm |
| Voice coil layers | 2 |
| Height of gap | 6 mm |
| Linear excursion | ± 3.25 mm |
| Max mech. excursion | ± 11 mm |
| Unit weight | 0.95 kg |
