| 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, ARES8 and ARES12 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. Cardio and end fire on every version.
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.
We recommend AUDIOFOCUS or Powersoft amplifiers for use with S 21.
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 SCiO and Armonia/Powersoft omni and cardio 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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