A21SUB APPLICATIONS Medium to large size touring Medium to large size installations Low frequency extension for A-series FEATURES Unique patented horn design Extremely accurate and dynamic low frequency reproduction High power, long excursion 21” cone driver Extreme power to size ratio Rugged birch plywood construction Textured semi-matt black paint finish A21SUB is a horn-loaded low frequency enclosure featuring US-patented proprietary symmetric loading. As a horn-loaded design A21SUB is able to maintain high efficiency and extremely fast peak response with low distortion even at high sound pressure levels. A21SUB features extreme single 21” neodymium cone driver, specially developed to cope with high compression loading. Unique enclosure design also enables the use of 15mm birch plywood still maintaining rigidity with free of unwanted vibrations. This makes the enclosure lighter than average without using fibre-class or other composite materials. As a “universal work horse” A21SUB is equipped with heavy duty wheels, ABS handles and large corner mouldings for easy and safe ground stacking. A21SUB - SPECIFICATIONS Frequency Response (-10 dB): 42 Hz – 320 Hz Horizontal Coverage (-6 dB): 360 degrees Vertical Coverage (-6 dB): 360 degrees Max SPL : 135/141 dB (half space) Sensitivity, 1w/1m: 101 dB (free space) Impedance: 8 ohms Crossover: 80 Hz – 200 Hz active Power handling: 1250 W cont, 5000 W peak Recommended HP-filter: 30 Hz, 12 dB/octave DRIVERS LF: (1) x 21” neodymium magnet cone driver, 6” voice coil ENCLOSURE Enclosure material: Birch plywood, textured black paint finish Grille: Cold rolled steel grille, textured black paint finish Connectors: (2) x NL4, +/-1: Input, +/-2: Linked Dimensions: 900 mm x 600 mm x 700 mm (840 w/wheels) Weight: 70 kg
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