POPE ML-221B dual 21 inch 3400w continuous Pink noise, comes with World class B & C speakers from Italy The POPE Professional® ML-221B dual 21” compact sub-woofer enclosure with its high sensitivity OEM B& C transducer, is designed ground up to provide sub frequency extension to modern sound reinforcement applications. Application • Live Sound • Touring Concerts • Club Systems • Large Nightclubs • Arenas Features • 2*21" (530 mm) Diameter OEM B& C Transducer • 4.5” (116 mm) voice coil • High sensitivity (98 dB @ 1m/1w) Specifications Model ML-221B Article No. #10137 Class 2*21” Sub-woofer Power Rating 3400 W Continuous 6800 W Program 13600 W Peak Frequency Range (-10dB) 22Hz - 160Hz (-10dB, half space) 24Hz - 160Hz (-6dB, half space) System Sensitivity (1W @ 1M) 98dB SPL Maximum Rated SPL 134dB continuous, 137dB peak Impedance 4Ω Transducer Sections Low Frequency 2*21" (530 mm) Diameter B& C® Transducer Power Rating 2*1700 Watts Continuous. Pink Noise 2*3400 Watts Program 2*6800 Watts Peak Voice Coil 153 mm (6") Voice Coil Material Copper Former Material Glass Fibre Magnet Material Neodymium Chassis Type Cast Aluminum Nominal Impedance Parallel: 4Ω Discrete: 8Ω x 2 Crossover Mode Bi-amp Enclosure Box Construction Rectangular cabinet, 18 mm, 11-ply plywood Transportation 2 handles on both sides Grille Powder coated, black, 16-gauge perforated steel grille with charcoal foam backing Input Connectors Neutrik® Speakon® NL4MP (x2) +2-2 Surface Finish SoundFlex® environment friendly coating