| Transducers | LF : 1 x 21″ |
| SPL peak / 1m (measured) | 139 dB |
| Weight | 58,8kg / 129.63lbs |
| Rigging | M8 threaded insert |
Description
S 21i is a compact, high-performance passive subwoofer for fixed installations, designed to complement our FR-X, ARES 8 and ARES 12 series in theatres, houses of worship, live music venues, stadiums, and other sound reinforcement applications.
S 21i 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.
Deployed standalone, stacked, or flown, S 21i adapts to mirror the needs of the venue and offers huge space and weight savings compared to industry-standard 2×18” subs.
S 21i 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 Powersoft amplifiers for use with S 21i. AUDIOFOCUS presets are available in ArmoniaPlus.
Features
- Powerful bass-reflex T-line design
- Optimized for installation
- Lightweight and portable
- Threaded inserts
- 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 cardio presets |
| Rigging | M8 threated insert |
| Connectors | 2 × 4-point speakON |
| Nominal Impedance | 8ohm |
| Watt RMS/peak | 3500/7000W |
| 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
Gll • 1.65 Mo • 06/01/2022
Gll • 1.78 Mo • 06/01/2022
