1. Single 21" Subwoofer with 280mm Manget, 5" Voice Coil 2. RMS1000W Wholesale dj equipment 3. Long-throw Outdoor Subwoofer QRx 121s Dj Karaoke Speaker Box, Branded Bass Speaker ( Single 21 inch Subwoofer ) * Frequency Response (±3 dB): 35 Hz - 215 Hz* Sensitivity (1w/1m): 106 dB SPL* Long-term SPL: 138 dB* Maximum SPL: 144 dB* Nominal Impedance: 8 ohms* Power rated: 1000 watts* Peak Power ...
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