Features：
Excellent waterproof performance, all metal structure, suitable for outdoor various are
Specification：
| Model | T-904B |
| Power taps（100V） | 20W, 40W |
| Power taps（70V） | 10W, 20W |
| Sensitivity | 94dB±3dB |
| Impedance | Black: Com Green: 500Ω |
| White: 250Ω | |
| Frequency response | 130-18KHz |
| Dimensions | 150×105×610mm |
| Speaker driver | 4″ x 4 |
| IP rate | IP66 |
| Weight | 4Kg |
