24C-E column extension

24E loudspeaker front
24E loudspeaker back

24C-E column extension

Column speakers

Installation specific cardioid column extender

  • Components 6 x 4"
  • Dispersion 90° x 20°
  • SPLmax 128 dB
  • Weight 24C-E: 7 kg / 15.4 lb, 24C + 24C-E: 16 kg / 35 lb

Product description

The 24C-E passive extender 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 aluminium 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 colours.


The d&b 10D, 30D and D6 amplifiers are recommended to drive the 24C-E. The d&b D20 and D80 can also be used. The 24C-E column extension is powered directly from the 24C loudspeaker.




Architectural specifications for detailed project planning

Do you require architectural specifications? For a d&b system or a specific d&b Series? Here are the most important technical specifications ready for download.

System data
Frequency response (-5 dB standard)
110 Hz - 17 kHz
Frequency response (-5 dB CUT mode)
150 Hz - 17 kHz
Max. sound pressure1
128 dB (in combination with 24C)
Cabinets per amplifier channel
Loudspeaker data
Installation specific cardioid column extender
Power handling capacity (RMS/peak 10 ms)
250/1200 W
Vertical downtilt of low-mid beam
Vertical adjustment of HF section
0° ‒ -14°
Nominal dispersion angle (h x v)
90° x 20°
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
fixed cable gland with 2-pole Mate-N-Lok mini through 24C
Dimensions / weight
Dimensions (H x W x D)
701 x 124.5 x 124 mm
27.6 x 4.9 x 4.88"
24C-E: 7 kg / 15.4 lb
24C + 24C-E: 16 kg / 35 lb

1 1m, free field. SPL max peak test signal: pink noise with crest factor 4

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