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Description
RCF VSA 850 II Digitally Steerable Column Speaker (White)The VSA 850 II is a multi amplified vertical steerable array that represents one of the latest RCF applications in terms of digital audio technology. Thanks to powerful DSPs it processes the audio signal sent to each speaker for controlling its vertical acoustic dispersion to address the audio signal exactly to the listening area, avoiding to send the acoustic energy to ceilings and empty floors, thus not introducing bad reflections that would affect
The VSA 850 II is a multi-amplified vertical steerable array that represents one of the latest RCF applications in terms of digital audio technology. Thanks to powerful DSPs it processes the audio signal sent to each speaker for controlling its vertical acoustic dispersion to address the audio signal exactly to the listening area, avoiding to send the acoustic energy to ceilings and empty floors, thus not introducing bad reflections that would affect speech intelligibility, mainly in critical environments with high reverberation time. Full RDNet compatibility.
Powerful transducers
The state-of-the-art transducers developed for the VSA II offer the highest intelligibility and wider frequency response, according to RCF philosophy. A 1,4 tesla flux density is the result of the massive neodymium magnet to achieve an incredible mid frequency dynamic range. The neodymium magnet is very lightweight and helps to compact the size of the overall system.
Advanced technology
The powerful multi-channel DSP controls each of the 8 Class-D 50 W power amplifiers, which can drive the 8 transducers with an optimal headroom. The amplification circuit includes several protections and controls to operate in safe mode. The switching-mode power supply module is connected with the DSP main board to check voltage, current and temperature status data. It operates in both 115/230 Volt AC modes and in 24 DC as a backup power source. Every model includes active protection against over-voltage and over-current. During the development of the VSA, high priority was given to critical signal paths and self-monitoring components to provide easier installation, simpler maintenance, and maximum safety and reliability. Also ideal for Voice Alarm applications.
Architectural camouflage
The unobtrusive and robust aluminum cabinet blends seamlessly in any architecturally sensitive environments. The standard colors are black RAL 9005 and white RAL 9003, and custom colors are available on request. The modular design approach offers a uniform heat dissipation for maximum consistency over time. The installation is particularly simple thanks to the drilling template on the wooden package and the lightweight of the speaker. Optional swivel brackets are available on request if the column has to be oriented horizontally.
Safe connections
The plastic cap/shield on the bottom-end of the column makes the connections safe and stable. Two balanced inputs are available for independent wiring of Priority and Aux audio sources. The Priority connector is available on ceramic terminal blocks with a thermal fuse for Voice Alarm applications and can be controlled by a fail-safe activation command. A remote switch-on facility is available to avoid power ON and OFF through electric switches when the columns are not part of a Voice Alarm system. By detecting the audio presence, the column can switch itself ON automatically, and then OFF after a period during which it is not used. The Data Link port allows control and monitoring from the RDNet Network, while the monitoring port can be used for ‘faulty’ remote indications. AC and DC Power supply connections are on top of the column, protected by a plastic cover. Connectors are VDE type for AC and ceramic terminal blocks for DC.
NETWORKED CONTROL AND MUCH MORE
RDNet is an advanced platform for integrated monitoring and control of sound systems - from small live and installed setups to massive arena systems. Based on a robust networked architecture, RDNet combines system control, line array design, and comprehensive audio measurements into a single powerful software package.
Engineers and technicians can intuitively manage every device on the network, from individual components to multiple groups. The platform provides full DSP control of compatible devices, with flexible configuration tools for perfectly tuning the system response at maximum speed. Users have real-time access and oversight of all key settings from a centralized interface.
Engineers and technicians can intuitively manage every device on the network, from individual components to multiple groups. The platform provides full DSP control of compatible devices, with flexible configuration tools for perfectly tuning the system response at maximum speed. Users have real-time access and oversight of all key settings from a centralized interface.
Features
- 8 x Class D, 50 W amplifiers
- 93 dB Max SPL (@ 30 m)
- 8 x 3.5" full range neo speakers
- 48 kHz 32 bit signal processing
- Horizontal dispersion 130°
- Vertical Coverage Beam from 10° to 30°
- Vertical Steering from 0° to –40°
- Standard installation accessories included
- Extruded aluminium body
- Indicators and control for EN 60849 monitoring facility
Specifications
Acoustical specifications
- Frequency Response 130 Hz ÷ 18000 Hz
- Max SPL @ 30m 93 dB
- Horizontal coverage angle 130°
- Vertical coverage angle 30°
Transducers
- Fullrange 8 x 3.5'' neo, 1.0'' v.c
Input/Output section
- Input signal bal/unbal
- Input connectors Ceramic screw terminals
- Input sensitivity 0 dBu
Processor section
- Protections Thermal, short circuit
- Limiter Soft Limiter
- RDNet Onboard
Power section
- Total Power 1300 W Peak, 650 W RMS
- Cooling Convection
- Connections VDE
Standard compliance
- Safety agency CE compliant
Physical specifications
- Cabinet/Case Material Aluminum
- Hardware 2 x wall mounting flange
- Color White - RAL 9003, Black - RAL 9005, Custom color
Size / Weight
- Height 980 mm / 38.58 inches
- Width 125 mm / 4.92 inches
- Depth 97 mm / 3.82 inches
- Weight 11.2 kg / 24.69 lbs
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
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Product Reviews
★★★★★ 5
This is the Operator's Manual for current Linux.
Format: Paperback
I recommend this. It is a current edition. If you are new to Linux, you need a solid reference like this, to unleash the Linux potential. Linux has become very friendly in the last few years, and presents a viable option. Don't struggle to learn Linux.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Great
Format: Paperback
Good information for any users
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Reviewed in the United States on December 28, 2025
★★★★★ 5
Great confidence booster for dad - techniques can be successfully implemented immediately after birth!
Format: Paperback
This is an excellent book! My husband read this book before our baby was born. Although I found a synopsis to be enough for me (no need to read a whole book for five main techniques), as an engineer, he really liked understanding all of the "whys" behind the methods, and understanding the reasoning gave him more empathy for our baby. My husband started implementing the techniques in this book immediately in the hospital right after the birth, and they really worked! It was extremely helpful for his confidence as a dad and for my confidence in him / us as we started the adventure of parenting (especially when I was recovering from childbirth in those early weeks). We have continued using these techniques for months, and they make a huge difference. Sometimes babies get overly tired and don't even know why they are crying anymore, and these techniques help to soothe quickly to get down for a nap. Truly, I do not know where we would be without a good swaddle and turning our baby on his side while swaddled, because he can be losing it completely and then the swaddle / gentle bounce calms him down very quickly. The one thing I wish the book did mention but does not is that it IS possible for a swaddle to be too tight on the legs - the latest research shows that babies need room to bend and straighten their legs for safe growth of their hips, so it's ok to do a fairly tight swaddle such that their arms cannot escape, but there does need to be slack at the feet.
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Reviewed in the United States on December 31, 2015
★★★★★ 5
SAVED MY SANITY!!!
Format: Paperback
I don't know why I didn't leave a review on this book as soon as I finished reading it! My daughter was quiet for the first week home from the hospital, but along came week two and around 8 pm one night she began to cry, and this time it was different, we literally could not get her to stop. She cried until around 4 am, and I was terrified that we had a year of colic crying ahead of us, but prayed it was just a fluke and that the next night things would be different. However, 8 pm rolled around, the crying began, and we had a repeat of a night full of inconsolable crying. I had never felt such all encompassing exhaustion in my entire life and I just prayed that there was a book that would have answers for me. So the next morning I took to Amazon and began my search. After reading reviews I decided to give this book a try - the length was perfect, thank you Harvey for getting straight to the point and telling us exactly what we needed to know! I was able to implement the S's the following evening at 8 pm when the crying began and I believed with every fiber of my being that it was going to work - AND IT DID!!! Simulating the womb experience was exactly what my daughter needed to soothe her overstimulated little newborn nervous system and she calmed down in less than a minute and fell into a blissful sleep that lasted until her next feeding, after which we repeated the process and she was asleep again. She was sleeping through the night after a couple of months, and we continued to use Harvey's method until eventually she didn't seem to need it anymore. This book was a lifesaver, I have given it as a gift at every baby shower I've attended since I first discovered it, and I'll continue to give it as long as I live!! This book could just as easily be called Happiest Parents on the Block - I am so very grateful that I found it when I did!
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Reviewed in the United States on May 22, 2020
★★★★★ 5
Every new parent and grandparent should read this book.
Format: Paperback
Exceptionally practical book for every new parent and grandparent
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Reviewed in the United States on April 17, 2026