CBL528
Remarkably Adaptable
CBL528 Constant Beamwidth Loudspeaker
8 x 2” vertically arrayed HF drivers
4 x 5” custom LF drivers.
Powder coated steel grille with a high transmission ratio.
Ultra Flexible
Constructed to thrive in various applications, from portable PA to fixed installations and beyond.
Highly focused, uniform coverage
Exceptionally precise directional characteristics, ensuring consistent frequency response across the entire range, regardless of the listening angle.
DSP Ready
Professionally tuned for PowerZone™️ digital processing & amplification.
Super wide, tightly controlled
A crossover point at 420Hz continuing all the way up to 20KHz allows for a smooth blend of full range audio from the entire reflective physical space, rendering speech intelligibility holes obsolete.
180° Horizontal Coverage
45° vertical coverage
Uncomplicating Calculations
Fixed vertical coverage at 45° per unit, optimizing system configuration, shortening project deployment time, and improving the installation experience.
Experience true acoustic reproduction
Consistent sound
throughout the entire listening space
Results that exceed expectation.
Control where it matters.
Exceptional speaker
design, evolved
Prioritizing R&D and leading the drive towards beautiful sonic possibilities is Hugh Sarvis; a premier product development engineer whose loudspeaker design efforts have resulted in numerous highly acclaimed products dating back to the 1970’s
CBL528-BA Constant Beamwidth Loudspeaker with 180° of Horizontal Coverage with Integrated Gain-shading providing a 45° Vertical Pattern.
Featuring a compact form factor that minimizes both transportation and line-of-sight considerations, the CBL528 is ideally suited for use as a portable PA solution. And with its Bi-Amped design for system integration with Blaze amplifiers, it also makes an excellent choice for permanent installations such as performing arts venues, commercial theaters, and Houses of Worship.
With its wide 180-degree horizontal and 45-degree vertical dispersion, this loudspeaker supports a frequency range from 54Hz to 18kHz—ensuring clear, natural sounding music and highly articulate speech reproduction. Equally important, the CBL528’s symmetrical dispersion pattern ensures listeners hear consistent sound regardless of whether they are positioned in front of, to the left, or to the right of the loudspeaker.
- Highly focused pattern with consistent frequency response throughout the frequency range, on and off-axis.
- Symmetrical dispersion pattern.
- Four 5” low-frequency drivers, with tightly designed acoustic centers, minimize comb-filtering with a frequency response down to 54Hz.
- Eight vertically mounted 2” mid-high frequency drivers.
- Patent pending mid-high frequency gain shadingprovides a smooth and controlled 45º vertical pattern from 420Hz to 18kHz.
- Bi-Amped design for system integration withBlaze Amplifiers.
- 180º symmetrical horizontal pattern control.
- Ultra low-distortion drivers
- System range 54Hz - 18kHz
Mounting and Accessories
Standard projector mount bracket (Not included)
Underside mount using standard speaker pole
Rigging eyelets (Not included)
Model Specifications
| SYSTEM PERFORMANCE | |
| Frequency Response (-3dB)1 | 54 Hz - 18 kHz |
| Frequency Range (-10 dB)1 | 48 Hz - 18 kHz |
| Recommended High-Pass Filter | 48 Hz - w/ minimum 24 dB / Butterworth Filter |
| Horizontal Nominal Dispersion (-6 dB) | 180° |
| Vertical Nominal Dispersion (-6 dB) | 45° |
| Recommended Crossover Frequency | 420 Hz (acoustic, active, external DSP) |
| Long Term Power Handling (Low Freq.)2 | 320 W (1280 W peak) |
| Long Term Power Handling (High Freq.) 2 | 200 W (800 W peak) |
| Low Frequency Impedance | 8 ohms |
| High Frequency Impedance | 5.2 ohms |
| Pressure Sensitivity (Low Freq @ 1W/ 1m)3 | 93 dB |
| Pressure Sensitivity (High Freq. @ 1W/1m)3 | 95.5 dB |
| Max System SPL (@1m) | 121 dB SPL (131 dB SPL peak) |
1. Frequency response and range measured on-axis with recommended active EQ in an anechoic environment. 2. Power handling tested using pink noise filtered to meet IEC 268-5, 6 dB crest factor, 100 hours, with recommended EQ. 3. Sensitivity measured in free field (no boundary-loading gain) with recommended active EQ, referenced to 1W/1m. 4. Maximum SPL calculated from sensitivity and power handling specifications, exclusive of power compression (100Hz-10KHz).
| PHYSICAL CHARACTERISTICS | |
| Enclosure | 12 mm birch plywood, engineered plastics. |
| Finish | Two-part spray catalyzed Polyurea coating on plywood |
| Grille | 14-gauge (2mm) perforated steel, powder-coated finish, black |
| Environmental | Indoor use only |
| Connectors/Bi-Amp | One (1) NL4 Neutrik® Speakon® connector |
| Suspension/Mounting | M10 x 4, projector mount, two-position pole mount. |
| Dimensions (HxWxD) | 19.46” x 19.45” x 15.99” (494.3 x 494 x 406.16mm) |
| Net Weight | 38.5lbs / 17.46kg |
| Shipping Weight | 43.5lbs / 19.75kg |
| Product Version | CBL528-BA |
