24C-E column extension

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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

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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.