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# 1939 RCA

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Zwaag, Netherlands—Oct 15, 2009

Alcons Announces the CR4 Large Format Sound System

Introducing line-source technology in cinema sound
With the Digital Cinema standard of 24-bit, up-to-99-channels, non-compressed audio, now becoming reality, new challenges have arrived for existing equipment; Requirements of the sound system have changed; Speech, music and effect should be reproduced with finest non-compressed detail and fullest digital dynamics.
 
As the next step in Alcons’ evolutionary Digital Cinema sound system program, the company developed the CR4 large-format pro-ribbon cinema front system, specifically aimed at medium to large applications, where maximum projection control and superb, non-compressed digital sound reproduction are required.
 
A cinema industries’ first is the implementation of line-source technology throughout the entire system, All sections are designed to operate within the established line-array parameters; This combines maximum acoustical output (through driver coupling) with optimized projection control, making large waveguides obsolete, enabling a shallow system design of 35cm/13,7” for space economic mounting.
 
By implementing line-source technology, the normal (-6dB per doubling of distance) reduction of SPL coverage from front to rear is reduced; The resulting “proximity” effect dramatically improves the cinema experience for the audience further away from the screen.
 
The new CR4-system has a three-way configuration, with double 15” woofers for low-frequency reproduction; The medium-frequencies are reproduced by an array of 4 units 6.5” in a dedicated wave-guide. The high-frequencies, already starting at 1kHz.!, are reproduced by a pro-ribbon HF section, featuring an array of triple Alcons’ patented 4” pro-ribbon drivers, each with optimized wave-guide and impedance.
 
Another advantage of the cylindrical wavefront of the pro-ribbon HF array is the very precise vertical projection, preventing unwanted ceiling reflections. 
  
The CR4 HF section has a 2400W peak power input, offering a 1:16 dynamic range with up to 90% less distortion from 1kHz. to beyond 20kHz. The patented Real-90 horizontal dispersion widens the stereo experience for far left and right seated audience. 

The CR4 is available with bi-amp filtering for economical powering or tri-amp filtering for maximum system output; The Signal Integrity Sensing™ pre-wiring ensures complete (long!) cable/connector compensation between CR4 and ALC, significantly increasing low and mid frequency response accuracy and further reducing distortion. SIS™ enables system impedances down to 2 ohms, without any quality sacrifice.
 
For full system performance, it is recommend using the CR4 in combination with an ALC amplified loudspeaker controller. Driven by the ALC, the CR4 delivers maximum sound quality with increased headroom under dedicated equalisation and inaudible (power and excursion) protection (SDP circuit) + is then covered by a 6-years limited warranty.
 
The first installations of the CR4 system includes the Pathé Cinemas Netherlands and Bergen Kino in Norway.
 
For more information, visit www.alconsaudio.com and www.digitalcinemaready.info
About Alcons Audio B.V.: Alcons Audio is a Dutch company, active in development and manufacturing of professional sound systems for quality-conscious clients in the cinema, installation and touring industry. Alcons sound systems excel in environments that benefit from low distortion and high dynamic range playback ; Basis for this quality is Alcons’ proprietary high-power pro-ribbon technology.  Recent Alcons cinema ambassadors include: Lotte Cinemas South Korea, Cinemaxx cinemas Germany, Eye Filminstitute The Netherlands, OsloKino Norway, Universal Pictures UK, Fraunhofer Institute Germany, QFX cinemas Nepal, iHome theatres India a.o. Alcons Audio B.V. Directory page
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