A21SUB is a horn-loaded low frequency enclosure featuring proprietary symmetric loading (patent pending). 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.

APPLICATIONS

• medium to large size touring
• medium to large size installations
• low frequency extension for C12, C15 and A8

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 - 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: 60 kg

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