CCTV continues advance of IP broadcasting with Lawo

Lawo consoles at the CCTV studio
Lawo consoles at the CCTV studio


The largest TV broadcaster in China is the country’s first to use Lawo’s flagship mc²96 Grand Production Console – part of China Central Television’s (CCTV) swift uptake of 4K/UHD and IP operation. The audio console has been installed in CCTV’s No.8 Studio in Beijing by systems integrator, the NDT Group.

The mc²96 and two further Lawo mc² series consoles in No.8 Studio (aka the 800m² studio) follows three prior AoIP projects for China’s national state broadcaster undertaken by Lawo.
“The CCTV audio engineers chose AoIP without hesitation, since they believe IP is the future and they trust Lawo,” added Bai Shi, system engineer, Lawo’s Beijing Representative Office.

With many music shows and full bands recorded here, the new audio system for the 800m² studio comprises of three mc² consoles – the 56-fader mc²96 for broadcasting, a 32-fader mc²56 for FOH, and a 40-fader mc²36 for monitors. Without AoIP, accommodating such a high signal count would be both difficult and costly. CCTV places a very high value on operational reliability, with both the mc²96 and mc²56 consoles’ HD Cores being fitted with redundant DSP and router cards. The mc²96 will also provide a backup FOH feed, while the mc²56 provides a corresponding live backup feed.

The Power Core also provides MADI I/O, used to connect the HD cores of the mc²96 and mc²56 consoles. In the unlikely event of these switches going down, both mixing consoles can still receive important I/O from the Power Cores via MADI at the press of a single button. Two of No.8 Studio’s five Power Core stageboxes – each with 32 mic inputs – are located inside the studio in flightcases, with all analog signals from inside the studio to the audio equipment room fed via fiber – as an alternative to copper multi-core cables, this ensures that there is no loss of sound quality on their 50-meter journey.

The remaining three Power Cores in the audio equipment room are used to provide analog and AES3 I/O for wireless mics, and EFX and VTR, EVS, EXT signals. Two Lawo A__madi4 units act as AoIP interfaces for the studio’s two Avid Pro Tools HD2 workstations via an Avid HD-MADI audio interface.

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