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Tang Band's W4-2315 coaxial driver offers extensive sound reproduction thanks to its Ø11.4cm full-range diaphragm and Ø2cm tweeter. It has a power handling capacity of 30W, a bamboo fibre cone for the full-range driver, an aluminium-magnesium alloy cone for the tweeter and a rubber suspension for good performance.

Technical characteristics
| Specifications | |
|---|---|
| Product type | Coaxial speaker |
| Speaker type | Full Range |
| Diaphragm material | Paper Aluminium-magnesium alloy |
| Surround material | Rubber |
| Magnetic system | Neodymium |
| Nominal impedance | 4Ω |
| DCR impedance | 3.6Ω |
| Sensitivity | 88dB |
| Frequency response | 65Hz - 40kHz |
| Free air resonance | 65Hz |
| Voice coil diameter | 32mm |
| Air gap height | 12mm |
| Rated power RMS | 30W |
| Max. power | 60W |
| Force factor (BL) | 6.20TM |
| Moving mass | 8.09g |
| Suspension compliance | 733.04 uMN¯¹ |
| Effective piston area | 0.0069 M² |
| Levc | 0.09 mH |
| Zo | 50Ω |
| Maximum linear peak (X-Max) | 2.8mm |
| Compliance volume (Vas) | 4.96L |
| Total quality factor (Qts) | 0.29 |
| Mechanical quality factor (QMS) | 3.68 |
| Electrical quality factor (Qes) | 0.31 |
| General | |
|---|---|
| External diameter | Ø114mm |
| Cutout diameter | 63.87mm |
| Depth | 76.87mm |
| Mounting bolt diameter | Ø145.17mm |
| Mounting holes | 6 |
| Package | 1x Tang Band W4-2315 |
| Speaker Power (W RMS) | 30 |
| Speaker Type | Full range |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 114.0 |
| Diaphragm type | Paper |
| Diaphragm type | Composite alloy |
| Efficiency / Sensitivity (dB) | 88.0 |
| Max Linear Excursion (Xmax) (mm) | 2.8 |
| Lowest frequency (Hz) | 65 |
| Highest frequency (Hz) | 40000 |