The CDD15B is a very high-power, passive two-way system designed for installations that demand the ultimate in sonic performance from a single enclosure. It combines very high output capability with exceptional fidelity and coverage consistency. Its coaxial drive unit comprises a powerful 15” (380mm)/3” (75mm) voice coil LF driver and a 1.4” (35mm) exit HF compression driver with a 3” (75mm) pure titanium diaphragm. The Coaxial Differential Dispersion technology employed in the CDD15 delivers more consistent audience coverage than systems with fixed X° x Y° coverage patterns — projecting relatively more output to the rear of the audience, while having wide horizontal coverage close-up. Its innovative CDD driver achieves ‘point source’ summation of the LF and HF sections — eliminating off-axis variations in frequency response associated with non-coaxial designs. Improving on conventional coaxial designs, which can suffer from high-frequency beaming, the driver features a static waveguide that merges seamlessly with the unique cone shape — maintaining the dispersion pattern out to very high frequencies. The visually-distinctive composite enclosure can be used in either horizontal (landscape) or vertical (portrait) orientation, with rotation of the driver easily accomplished by removing the screw-free, protective grille. The CDD15 can be suspended by eyebolts or by means of an optional horizontal yoke. A full-range, passive two-way system, the CDD15 may be used without a controller. However, the EQ and limiter functions of a controller such as the Martin Audio DX0.5, DX1.5 or DX2, or an MA Series amplifier with onboard DSP will maximise its capabilities. When used with a CSX subwoofer, crossover and EQ functions can either be performed by the DX0.5, DX1.5 and DX2 system controllers, or by an MA Series amplifier with onboard DSP option. FEATURES: High-output, CDD™ passive two-way system Coaxial Differential Dispersion™ technology Elegant UPM Formi composite enclosure User-rotatable coaxial drive unit Vertical and horizontal mounting options Screw-free perforated steel grille 8Ω nominal impedance Integral inserts for eyebolt suspension Finished in Black SPECIFICATION: TYPE: High-output, Coaxial Differential Dispersion passive two-way system FREQUENCY RESPONSE: 55Hz-18kHz ± 3dB, -10dB @ 45Hz DRIVER LF: 15” (380mm)/3” (75mm) voice coil, long excursion, shared ferrite motor system with HF HF: 1.4” (32mm) exit/3” (75mm) voice coil, titanium dome compression driver RATED POWER: 400W AES, 1600W peak RECOMMENDED AMPLIFIER: MA3.0, MA5.2K SENSITIVITY: 100dB MAXIMUM SPL: 126dB continuous, 132dB peak NOMINAL IMPEDANCE: 8 ohms DISPERSION (-6dB): 100˚-60˚ horizontal, 60˚ vertical (user-rotatable) CROSSOVER: 1.6kHz passive ENCLOSURE: 68 litre, composite material FINISH: Black or white textured paint PROTECTIVE GRILLE: black perforated steel with scrim cloth backing CONNECTORS: Low profile 20A push-lock PIN CONNECTIONS: Left to right: Input+, Input -, Link -, Link+ FITTINGS: 10 x M8 fly points DIMENSIONS: (W) 425mm x (H) 691mm x (D) 411mm (W) 16.7ins x (H) 27.2ins x (D) 16.2ins WEIGHT: 27.7kg (61lbs) ACCESSORIES: CDDYA15B yoke assembly black Manufacturer: Martin Audio