The stage box has long been a critical piece of equipment in live-event broadcasting because it provides a reliable and efficient way of getting on-stage feeds to the outside broadcast truck or TV/radio control room. This requirement remains true for IP-based networks and in response to this Lawo has launched a range of audio over IP (AoIP) stage boxes, which were shown at the recent BVE (Broadcast Video Expo) in London.
The new devices join Lawo's existing A_line series of AoIP interfaces and signal processors, including the A_mic8, A_digital8 and the A_madi4. The A_stage series offers Class A microphone pre-amps, digital analogue-to-digital FIR (finite impulse response) filtering and SM~PTE 2022-7 Seamless Protection Switching (SPS), plus two discrete redundant network links.
All mic/line inputs are switchable and can deal with both balanced and unbalanced sources. The stage boxes also feature AES3 I/O plus broadcast quality sample rate conversion, PTP/Word clock sync and conversion capacity and dual-redundant power inputs. The range comprises three units:
A_stage 80 is a maximum capacity 3RU multi-input AoIP stage box offering 32 switchable mic/line inputs, 32 analogue line outputs, eight stereo AES3 inputs and eight stereo AES3 outputs, eight opto-isolated GPIO ports adn dual 1000BT streaming and control ports on SFP/RJ45, with a separate RJ45 management port;
A_stage 48 is a 3RU unit and has 16 switchable mic/line inputs, 16 analogue line outputs, eight stereo AES3 inputs and eight stereo AES3 outputs on D-SUB connections, plus dual-redundant MADI ports on SFP, eight opto-isolated GPIO ports, dual 1000BT streaming and control on SFP/RJ45 and a 1000BT port RJ45;
A_stage 64 comes in a 4RU format and offers discrete I/O, with 32 switchable mic/line inputs, 16 analogue line outputs, eight stereo AES3 inputs and eight stereo AES3 outputs on XLR connectors, plus the same MADI, GPIO, streaming/control and management ports as found on the other two stage boxes.
The A_line range of AoIP nodes is able to stream uncompressed audio to Layer 3 networks in real-time over WANs and LANs. The units are able to convert a variety of audio formats - mic, line-level, AES3 and digitally encoded base band MADI - into AoIP streams through the SMPTE 2110-3-/31, AES67 and RAVENNA protocols.
You might also like...
Immersive audio has the great potential to transform our human listening experience, captivate our imagination, and inspire our inventiveness.
Moving to IP opens a whole plethora of options for broadcasters. Engineers often speak of the advantages of scalability and flexibility in IP systems. But IP systems take on many flavors, from on-prem to off-prem, private and public cloud. And…
Part one of this four-part series introduces immersive audio, the terminology used, the standards adopted, and the key principles that make it work.
Currently, there are over 660,000 different podcasts produced throughout the world. Over 28 million episodes are available in more than 100 languages. More than 50 percent of U.S. homes listen to podcasts regularly and most listeners average seven different shows each week. For…
Today, high quality audio recording may be achieved a multitude of ways, but using a low-cost portable recorder may be one of the simplest and best for non-technical users. Here are some tips.