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The WLA-121SUB is a passive bass-reflex line array subwoofer with a single Beyma 21" driver. It is rated at 1600 W continuous into 4 Ω and reaches 141 dB at 1 m in half space. Response is 25 Hz to 100 Hz within +/-3 dB. It can be flown or ground stacked, and an M20 pole mount is listed.
| Active or Passive | Passive |
|---|---|
| System Type | Subwoofer |
| Configuration | Bass-reflex |
| System Continuous Power | 1600 W |
| System Programme Power | 3200 W |
| System Peak Power | 6400 W |
| Max SPL @ 1m | 141 dB (Half Space) |
| Freq Response (+/-3 dB) | 25 Hz – 100 Hz |
| Freq Range (-10 dB) | 18 Hz – 125 Hz |
| Bi-amp Mode Switch | No |
| Bluetooth | No |
| IP Certification | None |
| Driver Brand | Beyma |
| LF Driver Size | 21" |
| LF Magnet Material | Ferrite |
| LF Frame Material | Aluminium |
| LF Voice Coil Size | 4" |
| Preset Library | Yes |
| Input Connector | 2 x 4 Pole Speaker Connector |
| Cabinet Type | Rectangle |
| Enclosure Material | Birch Plywood |
| Grille Material and Finish | Powder Coated Perforated Steel |
| Finish | Black Tough-Tone |
| Handles | 2 side (4 pcs) + 2 (top/bottom) |
| Deployment | Flying, Ground |
| Pole Mount | M20 |
| Rigging | Yes |
| Integral Rigging | 3 Points |
| Sensitivity 2.83 V / 1 m | 103 dB |
| System Rated Impedance | 4 Ω |
| Crossover Frequency | Preset Dependent |
| Recommended HPF = BW 18 dB/OCT. | 20 Hz |
| Transformer (T) | No |
| Included Accessory | User Manual, WLA-121SUB ARM |
| Unpacked - Front Height (mm) | 820 |
|---|---|
| Unpacked - Rear Height (mm) | 820 |
| Unpacked - Width Front (mm) | 566 |
| Unpacked - Width Rear (mm) | 566 |
| Unpacked - Depth (mm) | 760 |
| Packed - Height (mm) | 910 |
| Packed - Width Front (mm) | 660 |
| Packed - Width Rear (mm) | 660 |
| Packed - Depth (mm) | 860 |
| Weight - Nett (kg) | 59.5 |
| Weight - Gross (kg) | 66 |
The user manual and a WLA-121SUB ARM.
Yes. Deployment lists flying and ground, with 3-point integral rigging.
4 Ω system impedance on 2 x 4 pole speaker connectors.
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