The WR20 is a 2-way high performance stage monitor sound system, combining the highest sound quality with very high SPL capabilities in a compact and unobtrusive form factor. It brings Alcons’ well-recognized sonic signature sound to live-sound monitoring applications.
The system was designed to obtain a 1:1 reproduction of the original sound source with a completely neutral response. The objective was to create the best reference for a perfect performance, regardless of the application; from intelligible speech, to delicate classical music and jazz, up to balls-to-the-wall pop and rock performances. In any acoustical environment.
Being the first Alcons dedicated stage monitor ever, the latest proprietary technologies and developments have been included, such as; pro-ribbon mid-high frequency driver, Active-Coil™ low-mid frequency transducer technology, VelocityVent™ venting, VHIR™ -processing, a.o.
Sharing these technologies with other Alcons sound systems, offers one single, scalable audio reference from recording to mastering to playback and large-scale delivery, for any type of source material and in any size of application: One reference; One experience.
Focal point of the WR20 system is the pro-ribbon transducer; By implementing Alcons’ proprietary pro-ribbon transducer technology for the reproduction of mid and high frequencies, an ultra-low distortion is combined with a very high dynamic range.
This technology is the real-world alternative for any mid-high frequency transducer. The RBN pro-ribbon mid-high frequency drivers reproduce the original sound without adding any coloration or distortion. Input = output, just louder!
The R&D team of Alcons Audio, led by Philip “Dr. Phil” de Haan, has a 30+ year background in the research and development of pro-ribbon transducer technology; This has resulted in numerous patents and pending-patents, through which Alcons Audio can be seen as leader in this technology.
The Alcons RBN702rs pro-ribbon driver features a wide-band operating range from 1 kHz to 20 kHz, making it the perfect transducer solution in the 2-way stage monitor design of the WR20.
Due to the lack of a compression chamber and the light weight diaphragm, the pro-ribbons have up-to-90% less distortion than any conventional mid/high transducer, resulting in a perfect speech intelligibility, without any time-smear-induced listening fatigue.
The very-fast impulse response of Alcons’ pro-ribbon technology, in combination with the driver’s flat frequency response, caters for a 3 to 6 dB higher gain-before-feedback, even with the most sensitive microphones. Without the need for steep tonal corrections, the original signal remains intact, as it was intended.
Industry reference
Alcons RBN702 Pro-Ribbon
The pro-ribbon’s 7” voice-coil has a massive true power handling of 1500W (200msec = 10x AES standard) with a 1:15 RMS-to-peak ratio; This results in a unique dynamic headroom reserve, even under the highest outputs.
It combines the power to cut through the noise, with the elegance to reveal even the finest detail.
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.
Multiple-patented 7" pro-ribbon Neo HF driver with 7" voice-coil and 1500W peak power handling
Double 10" high efficiency Neo LF drivers with Active Coil™ motors, for ultra-low distortion
VelocityVent™ woofer loading for optimised breathing and a usable LF response down to 44Hz
Passive-filtered for simpler infrastructure and economical powering while guaranteeing maximum output
VHIR™ processing provides for a flat phase response with ultimate fidelity and low latency
Flexible positioning options for optimal projection and increased return-on-investment
The WR20 is part of a complete eco system with a dedicated power and processing platform with ALControl™ remote-control, power-, signal- and transport logistics, high-resolution ARC™ 3D-simulation software and a choice of different optional subwoofer systems.
WR20
High output stage monitor
The WR20 is a 2-way passive filtered high performance stage monitor sound system. lt contains the RBN702rsr pro-ribbon transducer for mid and high frequencies and double 10" for the low/mid frequencies with VelocityVent™ loading. The system has a horizontal dispersion of 45-degree and a vertical dispersion of 60-degree.
Sentinel10
Amplified loudspeaker controller
The Sentinel is the “engine” for the WR20 system; A 4-in/4-out dedicated and upgradeable DSP drive processor, with 192kHz capable AES3 inputs, touch screen and multi-color encoder control and 4 audiophile amplifier stages totaling more than 10kW of output power. Signal Integrity Sensing™ dynamic cable-length compensation, auto-redundant power supplies, modular amp/SMPS design.
ALControl™
Remote control software
ALControl™ is Alcons’ proprietary ALC software program, to control and monitor individual or multiples of Sentinel amplified loudspeaker controllers, that can be accessed from anywhere within a network. Features include off-line, pre-production configuration, auto-detect, extensive monitoring and control options and auto-update.
ARC™
Simulation software
ARC™ (Alcons Ribbon Calculator) is the GLL-based simulation software for the Alcons array systems. Based on actual system measurement output data, the high measurement resolution (up to 1-degree accuracy) offers horizontal + vertical modelling, turning the WR20 into a true precision tool.
Technical specifications
Frequency response: | 51 Hz - 20.000 Hz (+/- 3 dB) |
44 Hz - (+/-10 dB) | |
Sensitivity nominal: | 105 dB (200 Hz - 10 kHz) |
Nominal impedance: | 8 ohms |
Recommended drive: | Sentinel3 min. |
Nominal SPL peak: | 131 dB (Sentinel3 200 Hz - 10 kHz) |
137 dB (Sentinel10 200 Hz - 10 kHz) | |
Dispersion H x V (single) | 45° x 60° (@20kHz) |
Physical specifications
System: | 2-way, full-range |
Filtering: | passive |
Drivers LF: | 2x AMB10NDAIC-4 10”, vented |
Drivers HF: | 1x RBN702rs 7” pro-ribbon driver |
Connectors: | 2x Speakon NL4 input/link |
Physical dimensions: | mm inches |
Height: | 365 14.4 |
Width: | 550 21.7 |
Depth: | 463 18.2 |
Weight: | 26 kg 57.3 lb |
Warranty: | 6 years limited |
Due to Alcons Audio continuous R&D, all specifications are subject to change, without prior notice.
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