d&b audiotechnik 24C-E Column Extension

Installation-specific cardioid column extender

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The d&b audiotechnik 24C-E Column Extension is for use with the 24C column loudspeaker. The cabinet houses six 4” neodymium drivers, providing an extension of vertical directivity down by a further octave to 190 Hz. Connections between the loudspeakers are made passively, requiring only one amplifier channel. The 4″ drivers are arranged in a unique cardioid setup utilizing damped ports at the rear of the cabinet. This design provides a broadband attenuation to the rear of approximately 18 dB. The 24C-E loudspeaker enclosure is constructed from an extruded aluminum back and a metal baffle, while the front and sides of the cabinet are protected by a metal grill. The 24C-E features extendable rails to accommodate the attachments of the 24C. N-lok connectors are incorporated within the cabinet to link with the 24C loudspeaker. The xC-Series loudspeakers are available in white or black as standard or can be provided with the Special Colour (SC) option that can be executed in all RAL colors.

System data

Frequency response (–5 dB standard) 110 Hz – 17 kHz
Frequency response (–5 dB CUT mode) 150 Hz – 17 kHz
Max. sound pressure (1m, free field)1 128 dB (in combination with 24C)
Cabinets per amplifier channel 1
Loudspeaker data
Configuration Installation specific cardioid column extender
Power handling capacity (RMS/peak 10 ms) 250/1200 W
Nominal dispersion angle (h x v) 90° x 20°
Vertical downtilt of low-mid beam 5°
Vertical adjustment of HF section 0° ‒ -14°
Components 24C-E: 6 x 4″ driver with neodymium magnet
24C + 24C-E:
12 x 4″ driver with neodymium magnet
6 x 1.1″ dome tweeter mounted in vertical horn array
Connections fixed cable gland with 2-pole Mate-N-Lok mini through 24C

Dimensions, weight

Dimensions (H x W x D) 24C-E:
701 x 124.5 x 124 mm
27.6 x 4.9 x 4.88″
Weight 24C-E: 7 kg / 15.4 lb
24C + 24C-E: 16 kg / 35 lb

Additional information

Weight 16 lbs
Dimensions 5 × 5 × 28 in