Integrating Lawo Power Core with MADI Converter Cards
Many Australian broadcasters still rely on MADI for dependable, high-channel-count audio transport. It may sit behind an established console, playout system, OB rack or production suite, even as newer facilities move towards IP audio and software-defined processing.
Lawo Power Core provides a practical bridge between those environments. By using suitable converter cards, a station can retain existing MADI equipment while adding networked DSP, flexible routing and centralised control without replacing every device in the rack.
The key is to treat the installation as a signal-management project rather than a simple card swap. Clocking, channel maps, fibre types, redundancy and operational control all affect whether the hybrid system feels solid on air.
That approach suits the Australian market, where a metropolitan network in Sydney or Melbourne may share technology with regional stations in Queensland, Western Australia or South Australia. Budgets, engineering resources and legacy equipment vary widely, so staged migration is often the sensible path.
Why MADI Still Matters in Modern Radio
MADI remains attractive because it carries many audio channels over a single optical or coaxial connection. A 64-channel, 48 kHz stream can connect a console, router, recorder or studio interface with minimal configuration and predictable latency. For a busy talk station, that simplicity is valuable during live breakfast, sport and rolling news.
Power Core adds network-based processing and routing around that established transport. Audio from MADI-equipped sources can be brought into the Lawo environment, processed through DSP resources and delivered to other destinations through the appropriate network or interface connections.
This hybrid model also protects capital investment. An Australian station does not need to retire a reliable MADI console simply because it wants modern virtualisation, remote control or more flexible studio sharing.
Map Signal Paths Before Installing Cards
Begin with a channel inventory. Record every MADI source and destination, including console buses, codec feeds, studio monitors, playout outputs, recorders and external contribution systems. Identify whether each device uses optical or coaxial MADI, the number of channels in use and its clock source.
A clear naming convention prevents confusion when the system is commissioned. Names such as “Studio 2 Mic 01”, “News Codec Return” and “OB Truck Left” are more useful than generic labels such as Input 17. This matters when operators need to reroute a source quickly during a live program or a remote broadcast from the SCG.
Draw the intended signal flow before connecting anything. Separate primary programme paths from confidence monitoring, talkback and technical returns. Mark every point where sample-rate conversion, gain adjustment or format conversion might be required.
Choose Cards and Clocking Carefully
Converter card selection should follow the existing infrastructure, not the other way around. Confirm the Power Core chassis and card compatibility, required channel capacity, connector format and supported sample rates against Lawo’s current documentation. Optical MADI is common in permanent installations, while coaxial connections may still appear in older racks and mobile systems.
Clocking deserves particular attention. Choose one master reference for the hybrid system and distribute it consistently through the facility, whether that reference is house black burst with audio word clock, a dedicated word-clock source or an approved network timing architecture. Avoid allowing the console, converter and Power Core to compete as independent masters.
At 48 kHz, the channel count and routing expectations are usually straightforward. If any device operates at 96 kHz, channel capacity may be reduced, and the MADI map can change. Document those limits before the card is placed into service.
Build a Hybrid Audio Network
Power Core can sit between legacy MADI equipment and a networked Lawo workflow, allowing engineers to move processing and routing functions into a central platform. Keep the first design focused: bring in the required MADI channels, establish stable outputs and expand only after the basic path is proven.
| Area | Existing MADI side | Power Core side | Engineering check |
|---|---|---|---|
| Transport | Optical or coaxial MADI | Networked audio and control | Confirm formats and channel counts |
| Timing | Word clock or facility reference | Synchronous network clocking | Select one clear master |
| Processing | Console or external DSP | Central Power Core DSP | Avoid duplicate gain stages |
| Routing | Fixed patching or console matrix | Software-defined crosspoints | Label sources and destinations |
| Resilience | Spare MADI path or loop | Network redundancy where supported | Test failure behaviour |
A staged arrangement can leave the main studio on its familiar console while Power Core handles additional studios, codecs, remote contributors or processing-intensive services. That is particularly useful for regional Australian operations where a single engineering team may support several sites and cannot afford a long outage.
Configure Processing and Control Layers
After the physical connections are stable, create the audio path in logical blocks. Start with input reception, then apply processing, routing and output conversion. Keep input trims, mix-minus feeds and monitoring paths clearly separated from programme processing.
Power Core’s role can extend beyond straightforward conversion. It may provide dynamics, equalisation, delay, summing and routing for studio or transmission workflows, while control surfaces and software provide access for operators. A well-labelled VisTool or console interface should reflect the way the station works, rather than exposing a confusing list of technical crosspoints.
For interview-heavy formats, consistent microphone treatment and clean remote returns are important. Engineers can review AutoMix workflows when designing hands-off microphone management, especially where a presenter needs reliable control during a fast-moving breakfast program.
Test for Australian Broadcast Conditions
Commissioning should include normal operation, fault conditions and operator handover. Check every MADI channel for correct source, phase, level and destination. Confirm that talkback, mix-minus, off-air monitoring and recording feeds remain available when the main route changes.
Test optical paths at the actual cable lengths used in the facility, including any runs between floors or racks. In large metropolitan sites, dense equipment rooms can create patching mistakes, while regional sites may have longer maintenance intervals and fewer spare parts immediately available. Keep labelled spare cables and documented card settings on site.
Run a clock-loss test, network-link interruption test and converter restart test during a controlled maintenance window. Verify whether audio mutes, holds its last state or follows a backup route. The result should be known to presenters and producers before a fault occurs during the AFL, NRL or a major breaking-news bulletin.
Put the Design Into Service
A successful installation leaves operators with familiar controls and engineers with transparent diagnostics. Store the final MADI maps, clock settings, network addresses, card inventory and recovery procedures in the station’s maintenance system. Include photographs of rack connections where practical; they can save time when a technician is troubleshooting from another city.
Plan the cutover around the station’s real schedule. A midnight maintenance window may suit a metropolitan music service, while a regional broadcaster may need to work around local news, farm reports or community sport. Keep the original path available until the new route has passed an extended live test.
The first concrete step is to create a channel-and-clock inventory for every MADI device, then validate it against the intended Power Core converter-card configuration before ordering hardware.
