| Transducers | LF : 1 x 21″ |
| SPL peak / 1m (measured) | 139 dB |
| Weight | 58.8kg / 129.63lbs |
| Rigging | Pole mount |
Description
S 21 is a compact, high-performance passive touring subwoofer, designed to complement our FR-X, ARES 8 and ARES 12 series in sound reinforcement applications scaling to full stadium shows.
S 21 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 21 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 or flown, making it a versatile, high-earning hire stock staple.
S 21 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.
S 21 can be quickly deployed in any configuration, including cardioid and end-fire, when used with AUDIOFOCUS A Series amplifiers. Armonia presets are also available for Powersoft amplifiers.
Features
- Powerful bass-reflex T-line design
- Lightweight and portable
- Pole mount socket
- Passive
Technical specifications
| Description | High-power subwoofer |
| Transducers | LF: 1 x 21″ |
| Frequency range (-6dB) | 28Hz – 100 Hz |
| SPL peak (1) | 139 dB |
| Processing | Dedicated AUDIOFOCUS and Armonia/Powersoft omni and cardioid presets |
| Rigging | Pole socket |
| Connectors | 2 × 4-point speakON |
| Nominal Impedance | 8ohm |
| Watt AES/peak | 1700/6800W |
| Dimensions (H x W x D) | 590 x 750 x 655 mm 23.22 x 29.52 x 25.78 inches |
| Weight | 58.8kg / 129.63lbs |
| 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
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