Blaze Audio CBL523 Passive Constant Beamwidth Loudspeaker
The CBL523 scales the CBL528's constant beamwidth design down to a smaller footprint, three 2-inch coaxial mid/HF drivers vertically arrayed over two 5-inch LF drivers with acoustic centering. It holds a 160-degree horizontal by 55-degree vertical pattern with response from 55 Hz to 18 kHz, reaching 119 dB max SPL from 160 W of long-term full-range power handling at 4 ohms.
The enclosure is the same 12 mm birch plywood and engineered plastic construction as its bigger sibling, behind a 16-gauge perforated steel grille in a powder-coated finish, and weighs 15 pounds. Mounting hardware, a U-bracket and dual-suspension fly kit, is sold separately, and it ships in black or white for classrooms, meeting rooms, and smaller retail spaces.
| Mid/HF Drivers | Coaxial, 3 x 2 inch, vertically arrayed |
|---|---|
| LF Drivers | 2 x 5 inch, with acoustic centering |
| Frequency Response | 55 Hz - 18 kHz |
| Power Handling | 160 W long-term, full range, at 4 ohms |
| Sensitivity | 91 dB |
| Dispersion | Horizontal 160 degrees, Vertical 55 degrees |
| Max SPL | 119 dB |
| Cabinet / Weight | 12 mm birch plywood, engineered plastics / 15 lb (6.8 kg) |








