RedNet at the LCMOne of the largest music technology departments of any European educational institution, London College of Music is presently building the world’s largest Focusrite RedNet networks.

With Pro Tools as it primary music recording platform, the arrival of Pro Tools 11 invited a move to HDX systems, which are not restricted to Avid I/O – and opened the door to RedNet.

Founded in 1887, the college has been a part of the University of West London since 1991 with faculties spread across two sites in Ealing, West London. Recent years have seen it undertake an extensive building and refurbishment programme. Headed by Technical Manager, Richard Liggins – who is responsible for studio facility design and technical development of the department’s facilities – this includes a RedNet installation comprising 42 RedNet units.

Although integrating all-Avid systems would have been technically straightforward, other options offered by the marketplace demanded evaluation – including RedNet, Focusrite’s range of Dante-based audio over IP networking interfaces.

In addition to listening tests, other factors were considered – such as whether the hardware would survive heavy use by large numbers of students. ‘The notion for me was, what does it sound like?’ says Liggins. ‘Is it good enough to replace all of our I/O?’

‘I was very, very impressed by how it sounded,’ adds Senior Lecturer, Andrew Bourbon. ‘Having heard a bunch of competitors, for me it offered a more detailed presentation that still retained musicality. I think RedNet strikes an excellent balance.’

‘They have a very definite image quality to them. They have depth of field and detail; they handle bass really well and show a definite improvement in things like stereo imaging, certainly. And when you run them through our Audient or Neve desks, they have a quality to them that is very pleasing – it’s very musical, and there’s a transparency to it that means you can get the best out of the recordings that you’re making.’

It was then that the college staff began to realise the possibilities offered by RedNet’s audio networking: not simply linking recording areas together but also making it possible to capture and record sound almost anywhere an Ethernet socket could be located. Bourbon had experience of audio networking systems in the live sound environment, and saw the possibilities for RedNet at LCM. When the costs were added up it made financial, as well as technical sense, and the first phase of what is currently the world’s largest RedNet installation began.

RedNet employs Audinate’s Dante audio networking technology, which uses standard Cat5e or Cat6 Ethernet infrastructures to transmit high channel counts of high-bandwidth, uncompressed and sample-accurate digital audio with imperceptible latency. Although LCM’s existing network infrastructure could have been used, the decision was taken to lay a separate dedicated audio network as part of the Future Campus building and refurbishment programme. Two standard 48-port Cisco Gigabit Ethernet switches were installed and as the network is fully distributed, it can be managed from any network node rather than requiring central control.

RedNet racks at the LCMEach of the available RedNet I/O units allows different types of signal to be brought into the Dante network, with RedNet 1 and RedNet 2 providing eight and 16 channels of Focusrite’s precision AD and DA conversion respectively; RedNet 3 offering 32 channels of digital I/O – AES, SPDIF and Adat; and RedNet 4 offering eight of Focusrite’s highest quality mic/line inputs with full remote control and DIs. The latest addition on the I/O front is the RedNet D16 AES unit, which adds 16 channels of AES/EBU I/O with network redundancy in a 1U-high unit.

Meanwhile, RedNet 5 offers a bridge between the Dante network and Pro Tools HD, which was ideal for use with LCM’s multiple Pro Tools HD installations. ‘They work,’ says Liggins. ‘The great thing is that the units do what they say on the front panel – they’re simply I/O. And there’s no issue connecting them to Pro Tools,’ he goes on. ‘You just plug the thing in, Pro Tools says ‘hello’ and there’s the audio.’

RedNet 5 presents the Dante network’s interfaces as standard Pro Tools hardware, allowing them to be seamlessly integrated into a system. At LCM, 14 Pro Tools HDX systems are linked into the network with RedNet 5s, covering six tracking studios, three surround rooms and teaching rooms, while performance spaces are fitted with RedNet mic pres and AD/DA interfaces for playback. An additional 40 Logic and Pro Tools Native workstations can join the network, thanks to Dante Virtual Sound Card driver software running on all of the machines around the campus.

Altogether there are 42 RedNet units installed at UWL – three RedNet 4 mic/line input units, nine RedNet 1s, 12 RedNet 2s and a RedNet 6 Madi Bridge installed at LCM in addition to the RedNet 5s – all supplied to LCM via leading education technology provider Academia.

That’s the story so far – the final stage of the Future Campus programme calls for a new 15-room building at Ealing Film Studios with a fibre-optic link to the main campus. ‘We’ll be connecting it up for RedNet, so we can use it as a performance and recording space as and when we need it,’ Liggins promises.

The Madi capability is set to become important, too. LCM trains theatre sound engineers, and DiGiCo consoles are de rigeur in these environments. The RedNet 6 provides a 64-channel link to a Madi-equipped DiGiCo console, linking it with the rest of the campus network. RedNet will also allow simultaneous multiple recording of theatrical performances and other works that take place in the theatre, and encourage and support inter-departmental collaboration.

While not yet complete, the RedNet installation is already changing how the college operates: ‘People are coming to us everyday with new ideas as to how to utilise RedNet’s capabilities,’ Liggins explains. ‘Everything from multi-room recording to remote performance, distributed speaker networks and multichannel diffusion systems has been proposed! I love the fact that every day somebody comes up with another way of making use of it.’

‘We have students who come in, and they want to track into their own computer,’ Bourbon offers. ‘We had an example: a group of students going into a studio – they’ve got a copy of Dante Virtual Soundcard, and they were able to go direct from that quality recording room into their own laptop. It’s just preparing them for another part of industry that they’re going to get used to.’

‘In the end, if the RedNet units hadn’t sounded any good, we wouldn’t have bought them,’ Liggins concludes. ‘So, it’s down to the quality of the kit and the quality of the sound.’

More: http://uk.focusrite.com/rednet
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