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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 | Composite alloy | 
| Diaphragm type | Paper | 
| Efficiency / Sensitivity (dB) | 88.0 | 
| Max Linear Excursion (Xmax) (mm) | 2.8 | 
| Lowest frequency (Hz) | 65 | 
| Highest frequency (Hz) | 40000 |