d&b audiotechnik xC 24C-E Manual - Halaman 5

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2. 24C / 24C-E cardioid column loudspeaker

d&b 24C / 24C-E Manual 1.1 en

2.1.1. 24C cardioid column loudspeaker

The 24C is a passive 2-way column loudspeaker housing six 4"

neodymium drivers and an HF array comprising six 1.1" dome

tweeters.

The 4" drivers are arranged in a unique cardioid setup radiating

through waveguide elements at the front and damped ports at the

rear of the cabinet. This design provides a constant directivity

pattern of 90° in the horizontal plane with a broadbad attenuation

to the rear of an average of approx. 18 dB.

In the vertical plane, the beam produced by the low-mid drivers is

tilted downwards by –5° and provides significant directivity down

to 370 Hz.

The HF array has a nominal vertical dispersion of 20° and its main

axis can be adjusted continuously between 0° and –14° (when

using ArrayCalc adjustment in 1° increments).

The loudspeaker cabinets are based on an extruded aluminum

profile with a metal grill protecting the front of the loudspeaker.

Two continuous rails (8 mm T-slot profiles) are provided at the rear

for attaching a wall mount bracket.

2.1.2. 24C-E cardioid column extender

The 24C-E is a passive column extension to be attached directly to

the 24C. The cabinet houses six 4" neodymium drivers, providing

an extension of vertical directivity down by a further octave to

190 Hz.

The acoustic design is based on the same principles as the 24C,

thus offering the same cardioid dispersion pattern in the horizontal

plane. The extender is electrically connected through the 24C

without the need for an additional amplifier channel.

Note: The 24C-E loudspeaker is not intended to be operated

as a stand-alone system.