B 21
Features

Port design
Aerodynamic port design reduces distortion and airflow noise. The unique asymmetric shape reduces port noise drastically by (-35 dB).Sockets at front grill
Convenient multiple Neutrik speakON® sockets in front and back allows for easy set up ideal for live performances.
Specification

Model: | B 21 / B 21W |
---|---|
ACOUSTICAL | |
Frequency Range (-3 dB)* | 34 Hz - 130 Hz |
Frequency Range (-10 dB)* | 26 Hz - 160 Hz |
Coverage (-6dB) [H x V] | Omnidirectional |
Nominal Impedance | 8 Ω |
Sensitivity** | 99 dB |
Peak Power | 4000 W |
Continuous Power*** | 1000 W |
Maximum Peak SPL**** | 142 dB |
System Type | 1-Way Passive System |
Transducers | 1 x 21" Driver |
Enclosure | Vented Box |
Connectors | Input Signal: 2 x Neutrik SpeakON® NL4 Link Input: 2 x Neutrik SpeakON® NL4 Link Output: 1 x Neutrik SpeakON® NL4 |
Wiring | Pins 1+/1- : Driver Pins 2+/2- : Link (Output CH 2, Pins 1+/1-) |
MECHANICAL | |
Product Dimensions [H x W x D] (Including Rigging) | 666 x 585 x 832 mm |
Net Weight | 51 kg |
Packaging dimensions [H x W x D] | 796 x 685 x 930 mm |
Total Weight | 61.5 kg |
Cabinet | 15 - 24 mm Plywood |
Cabinet Finishing | Black or White Polyurea Coating |
Grille | Powder Coated Perforated Steel |
Hardware | 4 SE Audiotechnik® Ergonomic Handles 8 Rubber Feet and Top Slots M20 Pole Thread |
ACCESSORIES | |
Pole Bar | SPS20 |
Flight Case | B21 FC |
Transport Dolly | B21 TD |
Transport Cover | B21 TC |
* Measured with a 6th-order Butterworth low-pass filter applied at 130 Hz
** Half space, 1W / 1m, on axis
*** According to EIA-426B Standard (based on RMS Voltage)
**** Max peak SPL = Sensitivity + 10log10(Continuous Power) + 12 dB Crest factor
All product specifications are subject to change without prior notice.
Accessories

B 21 Dollyboard
Dollyboard for B 21
B 21 Dollyboard

M-F3A SPS 20
M20 Pole support to mount M-F3A PRO (or M-F3A) on top of our subwoofers
M-F3A SPS 20
Downloads
Engineering Data Sheet
- DescriptionB 21 Engineering Data Sheet
- Download
Brochure
- DescriptionB-Line Brochure
- Download
EU declaration of conformity - Passive Loudspeakers
- DescriptionB 21 EU declaration of conformity
- Download
EU declaration of conformity - Rigging and Accessories
- DescriptionB 21 EU declaration of conformity
- Download