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ลำโพงซับเบส d&b audiotechnik xS-Series 21S-SUB Subwoofer 21″

  • Installation high performance subwoofer with compact footprint
  • 21″ driver with neodymium magnet
  • Power Handling Capacity (RMS/Peak 10 Ms) 650/2600 W
  • ตอบสนองความถี่ (–5 dB standard) 35 Hz – 105 Hz
  • Nominal impedance 4 Ω
  • Max SPL 135 dB

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d&b audiotechnik 21S-SUB Installation Compact Subwoofer 21″ 650/2600W

ลำโพงซับเบส d&b audiotechnik สำหรับงานติดตั้ง d&b 21S ในตระกูล xS-Series เป็นตู้ซับเบสที่มีขนาดดอกลำโพง 21″ driver with neodymium magnet, ทนกำลังขับ 650/2600 W (RMS/peak 10 ms) impedance 4 Ω, Max SPL 132 dB ตอบสนองความถี่ (–5 dB standard) 35 Hz – 105 Hz, Max SPL 135 dB

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 option enables the operation of loudspeakers in changing ambient conditions, and features a fixed cable. The 21S-SUB can also be supplied in any RAL colour. This Special Colour option can be provided for rigging accessories.

Features:

  • Installation specific high performance subwoofer with compact footprint
  • 21″ driver with neodymium magnet
  • Power Handling Capacity (RMS/Peak 10 Ms) 650/2600 W
  • ตอบสนองความถี่ (–5 dB standard) 35 Hz – 105 Hz
  • Nominal impedance 4 Ω
  • Max SPL 135 dB

Amplifiers recommended:

The d&b audiotechnik loudspeaker range is designed exclusively for operation with d&b amplifiers. These provide power as well as comprehensive control and protection functions tailored to achieve the performance, reliability and longevity associated with the d&b System approach. 

**The d&b 30D amplifier is recommended to drive the 21S-SUB. The d&b D20 and D80 amplifiers can also be used with the appropriate loudspeaker configuration selected.

SPECIFICATIONS

System data  
Frequency response (–5 dB standard) 35 – 105 Hz
Frequency response (–5 dB INFRA mode) 33 – 85 Hz
Max. sound pressure (1m, free field)1
with D20/30D
with D80
134 dB
135 dB
Cabinets per amplifier channel 1
Loudspeaker data  
Configuration Installation specific high performance subwoofer with compact footprint
Nominal impedance 4 Ω
Power handling capacity (RMS/peak 10 ms) 650/2600 W
Components 21″ driver with neodymium magnet
Connections 1 x NL4
1 x screw terminal block
Dimensions, weight  
Dimensions (H x W x D) 1100 x 580 x 526 mm
43.3 x 22.8 x 20.7″
Weight 54 kg
119 lb

Application information is presented for guidance only. d&b reserves the right to make any necessary changes to the products and the published specifications. As part of the ongoing development program d&b tries to maintain the highest degree of product compatibility.

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