| Transducers | LF : 1 x 21″ |
| SPL max / 1m (measured) | 139 dB |
| Weight | 60kg / 132.27lbs |
| Rigging | Pole mount |
Description
S 21a is a compact, high-performance self-powered touring subwoofer, designed to complement our FR-X, ARES 8 and ARES 12 series in sound reinforcement applications scaling to full stadium shows.
S 21a houses a long excursion 21″ neodymium driver and combines front diffusion, bass reflex, and transmission line design for maximum efficiency and outstanding SPL.
Rental companies favor S 21a as an alternative to industry-standard 2×18” subs, saving half the truck space and around 40% of the weight. The subwoofer can be deployed standalone, stacked, making it a versatile, high-earning hire stock staple.
S 21a features an advanced AUDIOFOCUS Class D amplifier module with integral DSP and dedicated crossover presets for our full speaker range. Presets include plug ‘n play cardio and end fire variants, allowing S 21a to be deployed quickly and saving time on simulation calculations.
S 21a is built with pride in Belgium and coated in tough, weather-resistant polyurea to safeguard your investment. The cabinet front is protected by a rigid metal grill, backed by acoustically transparent foam.
Features
- Powerful bass-reflex T-line design
- Lightweight and portable
- Pole mount socket
- Self-powered plug ‘n play
- Rugged carry handles
- 6 presets
Technical specifications
| Description | High-power self-powered subwoofer |
| Transducers | LF: 1 x 21″ |
| Frequency range (-6dB) | 28Hz-100Hz |
| SPL max (1) | 139 dB |
| Processing | Dedicated AUDIOFOCUS omni and cardio presets |
| Rigging | Pole socket and Aeroquip fly tracks |
| Audio Connectors | IN: 1×3-point XLR LINK: 1×3-point XLR |
| Cloud Power-DANTE/AVB connectors | 2 x etherCON |
| Power Connectors | IN: 1×3-point powerCON LINK: 1×3-point powerCON |
| Dimensions (H x W x D) | 590 x 750 x 655 mm 23.22 x 29.52 x 25.78 inches |
| Weight | 60kg / 132.27lbs |
| Finish | Highly resistant polyurea coating
|
| Cabinet | High grade birch plywood |
(1) Peak level measured at 1 m under free field conditions using pink noise with crest factor 5
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Gll files for Ease and Easefocus
Gll • 1.65 Mo • 06/01/2022
Gll • 1.78 Mo • 06/01/2022
