24C Architectural specifications

The 2-way passive column loudspeaker shall consist of six 4” neodymium drivers and an HF array comprising six 1.1” dome tweeters.
In the vertical plane, the beam produced by the low-mid drivers shall be tilted downwards by –5° and shall provide directivity pattern control down to 370 Hz.
The loudspeaker shall be extendable by a dedicated extender unit to allow the vertical dispersion control to be extended downwards by another octave to 190 Hz.
The HF array shall have a nominal vertical dispersion of 20° and its main axis shall be adjustable continuously between 0° and –14°.
The 4” drivers shall be arranged in a unique cardioid setup radiating through waveguide elements at the front and damped ports at the rear of the cabinet and shall provide a constant directivity pattern of 90° in the horizontal plane with a broadband attenuation to the rear of the column of, on average, approx. 18 dB.
The loudspeaker cabinet shall be based on an extruded aluminum profile with a metal grill protecting the front of the loudspeaker.
Two continuous rails (8 mm T-slot profiles) shall be provided at the rear for attaching a wall mount bracket.
The connection panel on the back shall be recessed and fitted with a 4-pin Phoenix Euroblock terminal and shall allow a cross-section of up to 2.5 qmm / AWG 13.
In addition a NL4 M connetor socket shall be provided.
The loudspeaker shall only be operated by a dedicated, compatible controller amplifier.
The power handling capacity shall be 125 W RMS and 600 W peak (10 ms).
The frequency response (–5 dB) measured on axis shall be 110 Hz to 17 kHz with a maximum sound pressure of at least 126 dB.
The dimensions (W x H x D) shall not exceed 125 x 1000 x 124 mm (4.9" x 39.4" x 4.9") and the loudspeaker shall weigh no more than 9 kg (19.8 lb).

The loudspeaker shall be the 24C by: d&b audiotechnik GmbH & Co. KG.