SUBWOOFER FOR PA (PASSIVE) 'Sub-bass system. Compact multilayer birch acoustic enclosure. It is optimally combined with the Linear 5 series systems and the L Sub 2000 subwoofer. Speaker: 1 x 18''. Frequency response: 39 Hz – X-Over (+/- 3 dB), 31 Hz – X-Over (-10 dB). Power: 1200W RMS. SPL Max.: 137 dB @ 10% THD peak. Sensitivity: 106dB 1W/1m. Nominal impedance: 4 ohms. Connections: 2 x Speakon NL4, pin assignment switchable between 1+/1- and 2+/2-. Attachment points: 2 x M20, 8 x lugs. Metal grill with black acoustic foam. Dimensions WxHxD: 91 x 51 x 81 cm. Weight: 57.1kg. Finish: acrylic enamel, black.'