The Biamp Desono COLS81 is a premium two-way column loudspeaker designed for excellent speech intelligibility and full-range music playback in acoustically challenging environments. Its ultra-slim profile and IP66-rated weatherproof design make it well-suited for installations in houses of worship, auditoria, transport hubs, and retail spaces. The COLS81 supports 70V/100V constant-voltage systems and 16Ω low-impedance configurations, offering flexibility for various installation scenarios.
Constructed with a robust aluminium enclosure and grille, the COLS81 ensures durability and resistance to harsh environmental conditions. Its sleek, unobtrusive design allows seamless integration into diverse architectural settings. The included adjustable tilt L-bracket facilitates precise aiming, enhancing sound coverage and intelligibility. The speaker's compact dimensions (614 mm x 66 mm x 66 mm) and lightweight build (2.9 kg) simplify installation and handling.
| Specification | Details |
|---|---|
| Power Source | Passive (requires external amplifier) |
| Operating Mode | 70V/100V or 16Ω low impedance |
| Frequency Response (-10 dB) | 185 Hz – 22 kHz |
| Sensitivity (1W @ 1m) | 89 dB |
| Maximum SPL (Peak) | 110 dB |
| Power Handling | 30W RMS @ 16Ω (120W peak) |
| Transformer Taps | 70V: 3W, 7.5W, 15W, 30W; 100V: 7.5W, 15W, 30W |
| Nominal Impedance | 16Ω |
| Dispersion (H x V) | 120° x 15° |
| Dimensions (H x W x D) | 614 mm x 66 mm x 66 mm |
| Weight | 2.9 kg |
| Enclosure Material | Aluminium |
| Grille Material | Aluminium |
| IP Rating | IP66 |
| Mounting | Adjustable tilt L-bracket (included) |
The COLS81 delivers exceptional clarity and intelligibility, particularly in spaces with challenging acoustics. Its focused vertical dispersion minimises ceiling and floor reflections, enhancing direct sound to the audience. The speaker’s broad horizontal coverage ensures uniform sound distribution across the listening area. Its weather-resistant construction and flexible mounting options make it a reliable choice for both permanent installations and temporary setups in diverse environments.
Q: Is the COLS81 suitable for outdoor installations?
A: Yes, the COLS81's IP66 rating ensures protection against dust and powerful water jets, making it ideal for outdoor applications.
Q: Can the speaker be used in low-impedance systems?
A: Absolutely. The COLS81 includes a 16Ω bypass, allowing it to operate in low-impedance configurations.
Q: What mounting options are available?
A: The speaker comes with an adjustable tilt L-bracket for flexible wall mounting. An optional pan-and-tilt bracket (COLSBRA) is also available for enhanced positioning.
Q: Can the speaker's colour be customised?
A: Yes, while the standard finish is white (RAL 9016), custom RAL colours are available for orders of 12 or more units.
