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Dual 18" Subwoofer Weatherproof Speaker β3 TLB-218F is a subwoofer adopting new structure and new painting technology. It integrates dual 18" /4ohm woofer with 100mm voice coil. The rated power is 1000W, peak power is 4000W. Symmetrical magnet circuit design reduce the impar HD effectively and enhance the LF sound quality.
| System type: | Two way dual 18" Bass Weatherproof Line Array Speaker System | 
| HF driver: | Nil | 
| LF driver: | Dual 18" woofer | 
| Frequency response (-3dB): | LF:35Hz-500Hz | 
| Sensitivity (1W@1m): | 102dB | 
| Max SPL(1m): | LF:127dB/133dB(PEAK) | 
| Power: | LF: 1000W RMS | 
| Rated impedance: | 4 Ohms | 
| Cabinet: | Russian birch | 
| Installation: | Ground stack | 
| Carry: | 8 Metal handle | 
| Finish: | weather resistant polyurethane finish, black powder coating for grille. | 
| Connector: | NL4×2 LF:1+ 2- | 
| Cabinet dimension(W×H×D): | 985×895×692mm | 
| Package dimension(W×H×D): | 1095×1010×800mm | 
| Net Weight: | 97kg | 
| Gross weight: | 101kg |