Alcons Audio: QR24 Modular 2-way Column Loudspeaker


The Alcons QR24 Modular 2-way column loudspeaker can be used in either a vertical array system both permanent or portable applications makes this a versatile product. The sound is outstanding in the most challenging of environments. Alcons patented horizontal dispersion of the RBN HF drivers, offers incredible  seamless coverage, and widens the “stereo sweet spot” for the off-axis audience. The (2) RBN drivers, literally drives the system’s active frontal radiation tops at 90%, that results in a sharply-controlled vertical dispersion offering a excellence in SPL-independent, clarity over distance, without the necessity of DSP-based beam-shaping.

Key Features:

  • Modular scalable column array system, for each size venue/application
  • 12-inch pro-ribbon MHF drivers with up to 90% less distortion
  • Very high peak power handling for virtually infinite, dynamic MHF headroom
  • All Neodymium drivers for excellent performance-to-weight ratio
  • SIS™ pre-wired for very high damping and further reduced distortion
  • True 110-degree wide dispersion from 1kHz to 20kHz

The flat frequency response of the RBN mid-high range has largely controlled dispersion and brings “gain-before-feedback” controls directly the front underside of the system, by which The QR24 is powered and controlled by the ALC amplified loudspeaker controller. The passive filtering allows multiple modules to be combined on one amplifier channel, up to 3 units. Each purpose-designed 12” RBN driver has a peak power handling of 2.000W (200msec), creating a virtually infinite system headroom of 4.000W from 1kHz up.

Technical Specifications:

  • Depth : 337.82 mm
  • Depth : 13.30 in
  • Height : 660.40 mm
  • Height : 26 in
  • Impedance : 8 ohm
  • Sensitivity : 108 dB
  • Width : 248.92 mm
  • Width : 9.80 in
  • Maximum SPL (Sound Pressure Level) : 140 dB
  • Product Weight : 21.77 kg
  • Product Weight : 48 lbs
  • Coverage Horizontal : 110 degrees
  • Minimum Frequency Response (Bandwidth) : 74 Hz
  • Minimum Frequency Response (Bandwidth) : 0.07 kHz
  • Maximum Frequency Response (Bandwidth) : 20000 Hz
  • Maximum Frequency Response (Bandwidth) : 20 kHz

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About Alcons Audio:

Alcons Audio is one of Europe’s leading developers and manufacturers of professional sound systems. Since the company’s inception in 2002, founder Tom Back has brought together a team of audio experts, each of whom has over 25 years experience in the development, manufacturing and marketing of professional sound systems. Collectively, this skilled team is driving forward the art of audio technology, ensuring that any Alcons system delivers the very best in sound reproduction. All of the company’s speakers and amplifiers/processor are developed and manufactured in house, combining traditional craftsmanship with the latest technologies, materials and production processes. The result is a high quality product with a long service life and low depreciation, which gives the absolute maximum return on the investment. Alcons Audio does not strive for revolutionary ideas, it provides evolutionary solutions. Excellent sound and build quality are key to every product, with a strong focus on compact, flexible and ‘smart’ solutions. The company also believes that its products are about far more than just the technical specification. Highly responsive support is essential for making sure any system delivers maximum performance, so the Alcons Audio team ensures that back up is always available – fast.