SUBWOOFER FOR PA (PASSIVE) 'Sub-bass system. Acoustically tuned to optimally blend with Premium PR:O Series systems. Speakers: 2 x 10''. Frequency response: 60Hz–150Hz (+/- 3dB), 40Hz–150Hz (-10dB). Power: 500W RMS, 1500W peak. Sensitivity: 101dB 1W@1m. SPL Max.: 126dB @ 10% THD. Nominal impedance: 4 ohms. Cutoff frequency: 150 Hz, 12 dB/oct. Connectors: 2 x Speakon NL4. Attachment points: 2 x M20. Metal grill with black acoustic foam. Dimensions WxHxD: 36 x 61 x 53cm. Weight: 25.9kg. Finish: acrylic enamel, black.'