The Biamp Desono COLS81 (910-01589) is an extra-slim passive column loudspeaker with eight 2 inch drivers and a high-frequency dome, rated IP66 for outdoor use. A terminal-block tap selects 70V/100V or 16 ohm low impedance operation. Supplied with adjustable tilt L-brackets and two IP66 gland nuts.
Key Features
Eight 2 inch (51 mm) coated paper cone LF drivers
One 1 inch (25 mm) soft dome HF driver
IP66 rated for outdoor installation
Selectable 70V/100V or 16 ohm low impedance
70V taps: 30W, 15W, 7.5W, 3W
100V taps: 30W, 15W, 7.5W
120 degrees x 15 degrees coverage
Adjustable tilt L-bracket included
Two IP66 water-tight gland nuts included
5-year warranty
Specifications
| Type | Passive slim column, 8×2 inch plus HF |
| Operating mode | Passive |
| Drivers | 8 x 2 inch (51 mm) LF, 1 x 1 inch (25 mm) soft dome HF |
| Frequency range (-10 dB) | 185 Hz to 22 kHz |
| Nominal beamwidth | 120 degrees x 15 degrees |
| Power handling | 30W continuous at 16 ohm, 120W peak |
| Sensitivity | 89 dB (1W at 1 m), 86 dB (2.83V at 1 m) |
| Maximum SPL | 104 dB continuous, 110 dB peak at 1 m |
| 70V taps | 30W, 15W, 7.5W, 3W |
| 100V taps | 30W, 15W, 7.5W |
| Recommended amplifier | 30W to 60W at 16 ohm |
| Input connection | Pass-through screw-down terminal block |
| Environmental | IP66 per IEC 60529 |
| Mounting | Adjustable tilt L-bracket |
| Dimensions (H x W x D) | 614 x 66 x 66 mm |
| Weight | 2.9 kg |
| Finish | White, matte aluminium |





