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# 1939 Format Debate

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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 manufacturer of professional sound systems for quality-conscious clients in the cinema, installation and rental/touring industry.
 
The Alcons Audio team continuously strives for obtaining the most natural possible sound reproduction at any SPL with utmost day-to-day consistency and reliability. This is achieved through a tameless curiosity combined with a fearless drive to develop and implement unconventional technologies and techniques. Alcons’ multiple-patented high-power pro-ribbon technology is just one example.
 
Recent Alcons ambassadors include: Levels Audio studios Hollywood, VUE cinemas, Google/YouTube London, OsloKino Colosseum Norway, Lucasfilm Singapore, NBC Universal Pictures London and Beijing, Walt Disney Germany, Deluxe Digital studios, Factory Post studios UK, Pathé Tuschinski Amsterdam, Norwegian Film Institute, Berlinale Palast Berlin Germany, Savannah Film Festival USA
Alcons Audio B.V. Directory page

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