How do you build power redundancy for a show?
Quick answer
Build power redundancy by using dual power feeds from separate sources, automatic transfer switches (ATS), uninterruptible power supplies (UPS) for control systems, and distributed amplifier racks with independent power paths.
For professional sound reinforcement, power redundancy starts with dual mains feeds from independent utility transformers or generators. An automatic transfer switch (ATS) seamlessly switches between sources if one fails. For critical control equipment like DSP and network switches, a UPS provides clean, uninterrupted power during the transition.
SSOUNDS systems are designed with distributed amplifier racks—each with its own power input—so a single power failure doesn't take down the entire PA. We recommend powering left and right arrays from separate phases or feeds, and using redundant signal paths to maintain audio even if one amplifier loses power.
On large shows, a dedicated generator with dual alternators or a battery bank can back up the entire system. Regular load testing and monitoring of voltage and current draw ensure the redundancy plan works when needed. Always consult a qualified electrical engineer for your specific venue and load requirements.
Key things to consider
- Use dual independent power sources (e.g., two utility feeds or generator + utility) with an ATS.
- Install UPS for all control and network equipment to cover the switchover gap.
- Distribute amplifier racks across separate power circuits to avoid single points of failure.
- Implement redundant signal paths (analog and digital) so audio continues if one path loses power.
- Test the system under load before show day to verify transfer times and stability.
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SSOUNDS designs, supplies, installs and tunes professional AVL worldwide.