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Description
Beatrice R8/4M - 8 Channel 1RU Fully featured. 4 pin Male XLRThe Glensound BEATRICE R8 is a versatile and fully featured 8 channel rackmount intercom with crystal clear audio designed for broadcast, theatre and professional audio applications. It is part of our Beatrice intercom system that utilises the reliable and proven Dante network audio transmission protocol to allow real time distribution of uncompressed audio across standard networks. It is also AES67 compliant. As such the BEATRICE R8 is fully
The Glensound BEATRICE R8 is a versatile and fully featured 8 channel rackmount intercom with crystal clear audio designed for broadcast, theatre and professional audio applications.It is part of our Beatrice intercom system that utilises the reliable and proven Dante network audio transmission protocol to allow real time distribution of uncompressed audio across standard networks. It is also AES67 compliant. As such the BEATRICE R8 is fully compatible with other manufacturers’ equipment using the Dante and/ or AES67 protocols.
This 1RU rackmount intercom was designed to be very easy to use for the operator and simple to set up for the technician. It includes all the basic functionality required for small intercom systems and none of the overly complex installation requirements normally associated with large systems.
8 Channels Of Intercom
One single user connected to the unit can listen to and communicate with 8 separate locations on the network. Depending upon how the Dante network has been routed the incoming audio circuits and outgoing circuits can be different locations.
2 Racks make 16 Channels
Two Beatrice R8 racks can be joined together by just a pair of digital S/PDIF cables making a fully featured 2RU 16 channel intercom unit, with groups, mics, speakers and other resources shared between the 2 units.
Dante Routing & Partyline
Audio routing to/ from other devices is set up using Dante controller which allows for point to multipoint routing on outgoing circuits (but only 1 single incoming circuit for each of the 8 channels). Therefore we’ve included an inbuilt fixed ratio 14 input 19 output mixer matrix with inputs and outputs connected directly to the Dante / AES67 network which allows for setting up partyline and complex group circuits.
Onboard Mic & External Mic Input
A good quality, clear sounding microphone amplifier, designed for communication purposes, is fitted which also has the benefit of a compressor/ limiter circuit to help keep levels and intelligibility consistent even when the operator gets overly excited. This microphone amp has two microphone sources, either the inbuilt front panel mounted electret capsule which provides good voice intelligibility from normal working distances, or a balanced XLR input for connecting external gooseneck microphones. Twelve Volt Phantom power is also available and can be turned on/ off as required via an internal link.
High Output Intelligible Loudspeaker
What’s the point of an intercom unit if the onboard speaker is so cheap that you can’t understand what is being said to you? We tried hundreds of different drive units before settling on the one used in the Beatrice R8. We chose it because it had a much cleaner sound and better frequency response for vocals than any other speaker on the market that would fit in a 1RU subrack.
Mains or PoE Powered
An inbuilt wide range switch mode mains power supply is fitted for powering the Beatrice R8. It is terminated with a standard IEC plug, making it easy to plug in wherever you are in the World. The unit can also be powered via the Ethernet cable by standard PoE (Power over Ethernet) on either of the copper Ethernet ports. The PoE power can be supplied by an external PoE switch or a midspan power injector.
Redundant Twin Copper & Twin Fibre Ethernet Interface
When ultra reliable communications is needed for the utmost important jobs, glitch free redundant network circuits can be set up using the primary and secondary Dante network ports. There are 2 copper Ethernet ports on Neutrik Ethercons and also 2 fibre Ethernet ports presented as SFP slots (SFP modules not included). Redundant networks can be set up across any of these ports. These ports can also be set up as a network switch.
GPIO
There are nine solid state relay outputs. One of these outputs is triggered when any speak key is on (useful for dimming external loudspeakers or red light controls), the other eight are triggered individually when their associated channel receives a call. In total there are 12 loop closure inputs. 10 of these control the talk keys (the 8 channels, talk to group & talk to all) and the other 2 provide internal & external LS cuts.
Microphone Level Meter
An eight LED front panel multipurpose indicator is used to indicate the outgoing microphone level.
Channel Input and Output Gain Controls
For maximum flexibility, gain can be applied to incoming audio signals and outgoing signals separately. A row of LEDs indicate the current gain setting when a channel's input or output is being adjusted.
Call Function
A simple call function is inbuilt allowing the operator of one unit to call/alert other users that they want to communicate with them. A simple double tap of the speak key initiates a calling signal sent to the other party. The audio presence indicator flashes to indicate that you have been called. As well as the flashing LED at the receiving end of the call, an audible ‘beep’ can be set to alert the user that an incoming call has been placed to them.
Monitor Selection
Each channel has an illuminated audio monitor switch. This allows the channels’ incoming audio circuit to be routed to the headphones/ loudspeakers. Using these switches makes it easy for an operator to monitor only the desired incoming audio channels.
Presence Indication
A front panel illuminated red switch is used to indicate the presence of incoming audio on that channel. When audio is detected on the channel the switches internal red LED is illuminated. The red LED then stays on for a short period after the incoming audio stops to help the operator identify who has been talking to them.
Speaker Output
As well as the front panel internal loudspeaker a balanced analogue output is provided for connecting to an external powered loudspeaker.
4-Wire Connectivity
Two traditional analogue 4-wire circuits can be connected to two of the R8's intercom channels by utilising the versatile analogue inputs and outputs.
Local Input and Output Circuits
For increased versatility there are 2 local balanced analogue audio inputs and 2 local balanced analogue outputs. The inputs have input gain controls and presence detectors on them (just like an intercom’s channel input) and are routed directly to two output channels on the Dante / AES67 network. The outputs are fed directly from two input channels from the Dante / AES67 network.
Mixer Matrix For Partyline
For setting up more complex groups and partyline circuits that could not be achieved via Dante controller or your AES67 router, an inbuilt fixed ratio mixer is supplied. It has 14 audio inputs direct from the network and 19 mix outputs to the network. Five of the mixers have inbuilt automatic audio ducking circuits.
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4.7 ★★★★★
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Product Reviews
★★★★★ 5
Glorious book on Man's (unfortunate) wars with himself
Format: Hardcover
If you have any interest in the subject matter, buy this book, it is fantastic.
Many beautiful paintings and maps, some on full pages.
One comment. In various parts of this book it has something called "Directory," which is just paragraphs on events that the writer did not see deserving a full page in the book.
On page 42 we have "Directory: Before 1000 CE," and included is a paragraph on "Teutoburg Forest, Roman-Germanic Wars, 9 CE" The paragraph ends with: "Although there were subsequent expeditions to Germany, the Roman frontier became fixed at the Rhine (River)."
Surely, this is one of the greatest battles and results in European history and should have had a full two pages in this book instead of just a short paragraph. See the Battle of the Teutoburg Forest, 9 CE.
Another short fall of this book is no mention of Boudica, who in AD 60 0r 61, was defeated by the Romans (commander- Suetonius Paullinus), who went on to "rule" England and Wales to about AD 410. This is my review of Graham Webster's book "Boudica: The British revolt against Rome in AD 60:
Lucid, well written on Boudica, queen of the East Anglian kingdom of the Iceni tribe, and much more. Sixteen pages of black and white photographs.
Contents (all of these Chapter headings have sub-headings)1. Sources
2. The Opposing Forces and the State of Britain 54 B.C.
3. Britain between the Invasions 54 B.C.-A.D. 43
4. The Conquest of A.D. 43
5. The Storm Breaks A.D. 60
6. The Evidence from the Ground
7. The Trail of Destruction
Epilogue
References
Bibliography
Glossary of Latin Terms and Words
Index
24 Plates
8 Maps and Diagrams
The Epilogue, a timeless piece of writing, should be read by everyone, young and old. The last sentence of the book in the Epilogue reads:
"They may help us to see more clearly what is happening in the world today, and even help us prevent some of the worst excesses of human folly and greed for power, which brings incalculable misery and suffering to the innocent majority."
Re: Boudica and the final battle with Suetonius Paullinus and the approximately 12,000 men under his command and Boudica's warriors, which could have been as great as 100,000, page 99, (but could be less);
we apply
"O2S4 MEC:"
Objective (Simplicity);
Offensive, Sprit of;
Superiority at Point of Contact (Economy of Force);
Surprise (Security);
Security (Surprise);
Simplicity (Objective);
Movement (Mobility);
Economy of Force (Superiority at Point of Contact);
Cooperation (Unity of Command)
On pages 98-99 in the book we have Fig. 5-, (if this is indeed the place of the final battle took place) "The battle between Boudica and Paullinus in its possible Mancetter context," it is clear that Paullinus had chosen the place of the battle and his position to force Boudica's warriors to a frontal attack and thereby creating "Superiority at Point of Contact." And this is probably what happened, as Boudica's warriors attacked and were funneled into the Roman Legion "buzz saw" due to their "simple" frontal attack.
From Fig. 5 again, it is clear that there was forest behind Paullinus and his men and the River Anker in front of them. I do not know if it would have possible to attack Paullinus from the rear by going through the forest. However, again from Fig. 5, it is apparent that Boudica's warriors probably could have attacked Paullinus from the right and left flanks (even though the Roman cavalry was on both flanks), creating a three pronged attack, negating some of the Roman's "Superiority at Point of Contact." It is clear that Boudica lost "Cooperation (Unity of Command)," or never had it in the first place, leading to the rout by Paullinus' much smaller force over a much larger force and the fate of Britain for about the next 400 years.
The Roman brutality that caused this uprising and Boudica's, and her warriors response, are part of history. Paullius' (whatever you think of him), choice of the battlefield was tactically brilliant, and no one, including Boudica, could match it on the field of battle that day.
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Reviewed in the United States on April 15, 2019
★★★★★ 5
Poor formatting for Kindle, GREAT as a hardback
Format: Kindle
So far I am loving this book, and hating its formatting for the Kindle. Probably because of all the maps and illustrations, it is hard to enjoy on my Kindle, and I have to awkwardly change the size of the page 3-4 times on every page while I try to read it. My guess is I would really love it as a physical book. LATER: As noted I was very disappointed trying to read this on a small Kindle, but the book looked so promising that I repurchased it in hardback. WOW what a difference. Wonderful illustrations, maps, the works. Given the number of important battles chosen, it would not be possible to go into great detail on any single one, but most people are not going to remember all those details anyway, and this book gives you what you really need, and the level of detail you are likely to remember and to help you appreciate the importance of the event. Strongly recommended in hardback.
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Reviewed in the United States on March 21, 2024
★★★★★ 5
A must-have for its educational value and the sheer pleasure it brings
Format: Hardcover
"Battles that Changed History" from the DK History Changers series is an absolute gem for history enthusiasts of any age. The book offers a captivating journey through pivotal moments, providing in-depth insights into the strategies, key figures, and circumstances that shaped the course of history. The visual richness of DK's signature style, combined with well-researched content, makes this book not only informative but also visually stunning. Each battle is presented with clarity, making complex historical events accessible and engaging. Whether you're a seasoned history buff or a casual reader, "Battles that Changed History" is a must-have for its educational value and the sheer pleasure it brings to exploring the world's transformative conflicts.
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Reviewed in the United States on November 12, 2023
★★★★★ 5
Great book, the battle descriptions should've been more detailed
Format: Hardcover
The book looks great, both the dust jacket and the book cover are printed with the cover image.
The dust jacket is textured with a matte finish and shiny silver text, while the book cover looks exactly like the front cover image provided here on Amazon (with a glossy finish). In my opinion, the dust jacket looks better.
The book itself looks great. The texts are a bit too short for my taste though, as I would've like to read more detailed descriptions of each battle. Read the sample of the Battle of Marathon that's provided here. It will give you a good idea of the level of detail provided for each battle. Also, some of the battles that didn't get the full 2 page treatment were, in my opinion, significant and were deserving of getting it (Battle of Kadesh for example), while some less significant battles did get it, oddly enough.
All in all, I'd definitely recommend the book, but it does have a few shortcomings mentioned above.
PS. Also, Amazon, please work on your packaging. Add a few of those (styro)foam pieces with the book or something. My book did arrive mostly ok, and mostly unscathed, but when I picked up the package, the book was moving freely inside the banged up package. I'd say I got lucky it didn't get damaged too badly (apart from a few minor impact traces -- I'd say condition it arrived in was 9/10).
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Reviewed in the United States on April 28, 2019
★★★★★ 4
Very good book with a few minor flaws
Format: Hardcover
As most books published under the DK banner, this is a visually excellent book that is a pleasure to look at. It is well written and chock-full of outstanding illustrations and maps. I do have a few minor "ding" though. First, I think that the book should have included a "why" the battle changed history. While in most cases, this rationale is included in the text, in a few cases one has to wonder "why" this battle was important; for example, they chose the World War I battle of Verdun, but they also said that the battle was "inconclusive"; if so, how did it change history? Second, I have to question the choice of some of the battles. For example, the editors list "Arnhem", which ended up as a costly allied failure, but fail to mention the wildly successful Soviet "Operation Bagration", which destroyed the German Army Group Center. Third, there were some minor factual inaccuracies. The battles of Passchendaele and Dunkirk were both shown on a map as being located in Northern Italy instead of northern France, while Operation Overlord, the Allied invasion of France, was shown on a map as being more at Pas de Calais vice the beaches of Normandy. In spite of these nits, this is a good book worthy of belonging in you library. Four stars.
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Reviewed in the United States on May 7, 2020