B-Line

B 21 A
The powerhouse. The mighty 21" driver with its huge 5" voice coil thunders with up to 142 W max. SPL down to the deepest depths – performing from 25 Hz it is the bass beast in our line-up. With a load capacity of up to 4,000 W peak, it delivers enough power for every stage and every event. Despite its higher weight, it is easy to manoeuvre thanks to the two well-positioned recessed grips on both sides. In direct comparison, as expected, it delivers the most robust performance at the low end and generates more than enough pressure in any situation. The active versions of this bass monster have a 1,600 W Class-D amp on board.
The great advantage of powered speakers is the built in amplifier. So there is no need for an external device – the internal amp is optimally matched to the woofer! The B 21A driven by a mighty 1,600 W (peak) amplifier. Integrated DSP presets allow loading of preset system setups that are optimally matched to SE Audiotechnik products. Thus, the entire system is quickly and easily set up and perfectly adjusted. The directivity can be effortlessly changed in a flash from normal to cardioid or end-fire configuration via the large display and the push/rotary controller. Parameters such as EQ, Delay, Sensitivity and Phase can be adjusted and stored in your own User Presets.
B 21A |
|
ACOUSTICAL |
|
Frequency range (-3 dB) |
34 Hz - 220 Hz 7 |
Frequency range (-10 dB) |
28 Hz - 280 Hz 7 |
Coverage angles (-6 dB) [H x V] |
Omnidirectional |
Maximum Peak SPL 6 |
139 dB |
System type |
1-way self-powered system |
Crossover frequency |
- |
Transducers |
1 x 21" driver (5" voice coil) |
Enclosure type |
Vented box |
AMPLIFICATION |
|
Type |
Single channel, class-D with SMPS |
Output power |
1600 W |
Protection |
Short circuit, overheating, overcurrent |
Connectors |
Input signal:
balanced XLR 3-pin female |
Wiring |
Pin N: Neutral, Pin L: Conductor, Pin E: Ground |
Input sensitivity |
+14 dBu (3.88 V), +4 dBu (1.23 V), 0 dBu (0.775 V), 0 dBV (1 V), -10 dBV (0.316 V) |
DSP |
48 kHz/24 bit with
extended dynamics |
Processing |
Factory and user presets, EQ, delay, directivity control, input sensitivity, p hase inversion |
User controls |
Power: ON/OFF switch |
MECHANICAL |
|
Product dimensions
[H x W x D] |
666 x 585 x 832 mm |
Net weight |
55 kg |
Packaging dimensions [H x W x D] |
796 x 685 x 930 mm |
Total weight |
65 kg |
Cabinet |
15 - 24 mm plywood |
Cabinet finishing |
Black or white polyurea coating |
Grille |
Powder coated perforated steel |
Hardware |
8 rubber feet and top recesses for stacking |
Stacking |
- |
ACCESSORIES |
|
Stacking frame for M-F3A PRO |
- |
Stacking frame for L 35 |
- |
Pole bar |
SPS20 |
Transport dolly |
B 21 TD |
Transport cover |
B 21 TC |
Pole bar |
SPS20 |
Transport dolly |
B 21 TD |
Transport cover |
B 21 TC |
