Alcons Audio Introduces WR20 Pro-Ribbon Stage Monitor

June 3 2024, 00:35
Following a preview at the NAMM show in January 2024, Alcons Audio has officially introduced the WR20 high performance stage monitor sound system. For this new design, the Dutch audio innovator is once again exploring the advantages of its renowned pro-ribbon technology to stage monitoring, matched with a passive-filtered system that brings the well-recognized dynamic and ultra-low distortion Alcons signature sound in a slim and unobtrusive package.
 

Many renowned pro audio manufacturers have tried and never succeeded to dislodge decade-old stage monitor designs that are considered industry standards, and that many rental and live production companies repeatedly specify. When a company like Alcons Audio challenges the status quo in the category, it needs to offer clear, audible benefits, apart from meeting a specific set of requirements that are expected for such a specific application.
  
According to Alcons audio, through the implementation of its proprietary RBN702 pro-ribbon transducer, the WR20 stage monitor "offers a non-compressed, identical tonal balance at any SPL, with up-to-90% less distortion and also far less listening fatigue." 

"Its fast impulse response, “compression-less” principle and flat frequency response offer a 3 to 6dB improved gain-before-feedback over traditional systems, even with the most sensitive microphones, without steep tonal corrections, leaving the original signal unchanged. At the same time, it also caters for the benchmark-setting intelligibility in even the acoustically most-challenging applications."

The pro-ribbon's very high peak power handling of 1500W results in a unique 1:15 RMS-to-peak dynamic range, which means in practice a virtually unlimited headroom. The multiple-patented (H 45 x V 60-degrees) dispersion of the RBN702 offers a very controlled and consistent projection up to the highest frequencies. Mounted in a symmetrical tight-pack configuration with the two woofers, the projection control is extended down to the lower frequencies, while maintaining a relative small footprint.
The design is complemented with two Alcons purpose-designed 10" woofers featuring Active Coil technology for very low-distortion LF reproduction, a perfect match with the MHF pro-ribbon driver. The woofers are loaded by two top VelocityVent ports, for optimized breathing while extending the usable LF response down to 44Hz.

As an integral part of the Alcons eco system, the WR20 stage monitor is to be driven by the brand's existing ALC amplified loudspeaker controller. The unit's integrated VHIR processing, 192kHz AES3 digital inputs and high-quality amplifier stages, allow the WR20 to deliver a natural sound quality with maximum output and utmost operation reliability.

"We have had a floor or stage monitor on our development list for a long time. Despite quite a few prototypes through the years, it wasn't possible until we developed the patent for the directivity control up to the highest frequencies in both planes for our pro-ribbon transducers. Being the first-ever Alcons dedicated stage monitor, we wanted to make a design statement to give it the extra edge over the traditional industry standards, which are typically aimed at being “loud”, but often lack the fidelity to be a truly accurate reference for the performer," explains Philip de Haan, head of Alcons Audio R&D.

"For operation economy, we wanted to stick to a passive-filtered system, as with most of our designs. However, we also wanted "over-the-top" headroom, so we opted for high efficiency components combined with large//maximum voice-coil real estate," he adds.
Weapon of choice for the mid and high frequencies became the 7-inch RBN702rs pro-ribbon driver, with 1500W peak power, coupled to a full-size waveguide for excellent directivity control. The Alcons RBN702rs features a wide-band operating range from 1kHz to 20kHz, making it a perfect transducer solution for a 2-way stage monitor design. Due to the lack of a compression chamber and the lightweight diaphragm, the pro-ribbons have less distortion than any conventional mid/high transducer, resulting in a perfect speech intelligibility, without any time-smear-induced listening fatigue. For the low frequencies, a completely new 10" was developed for the WR20, featuring a 3-inch ActiveCoil motor structure for the lowest distortion possible.

"The result of the combination is a unique ultra-low distortion reference system, with a very high dynamic range. Or as we like to put it: the power to cut through the noise, with the elegance to reveal even the finest detail," adds Philip de Haan.  
www.alconsaudio.com
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