A21SUB - AURA AUDIO
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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