d&amp;b audiotechnik 21S-SUB

technology

sound

21S-SUB

The 21S-SUB is a high performance subwoofer for use with the xS-Series and xA-Series loudspeakers and is intended for a wide range of permanently installed applications. The cabinet houses a single long excursion 21" driver in a bass-reflex design.
The large, specially shaped reflex port enables the 21S-SUB to achieve high Sound Pressure Levels from a cabinet with a small footprint. When operated in INFRA mode, the 21S-SUB can be used to complement other d&b subwoofers by extending the frequency response of the system down to 33Hz. The 21S-SUB can be ground stacked or flown in either orientation. It can be flown individually or in a cluster of two cabinets.
The enclosure is constructed from marine plywood with an impact resistant black paint finish. The front of the loudspeaker cabinet is protected by a rigid metal grill backed by an acoustically transparent foam. The top, bottom and rear panels each incorporate a pair of M10 threaded inserts for attaching d&b rigging hardware. The Weather Resistant (WR) option provides an IP55 rating that enables the operation of loudspeakers in changing ambient conditions, and features a fixed cable.

Speaker Diameter
LF Nominal Diameter	21"
Nominal Impedance
Loudspeaker Nominal Impedance	4 Ohms
Power Capacity
Loudspeaker Power Capacity (RMS/peak 10 ms)	650/2600 W
Frequency Range
Frequency Range	35 Hz - 105 Hz
Dispersion
Dispersion Angle	Omni directional
SPL
SPL Max	135 dB
SPL Min	134 dB

Tags: subwoofers , technology , sound , db-audio , x-Series , xS-Series

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