How do you build power redundancy for a show?

Building power redundancy starts with the electrical infrastructure. The gold standard is dual independent utility feeds from different substations, each capable of handling the full load. For most shows, this is impractical, so the next best is a primary feed from the venue plus a generator on standby. An automatic transfer switch (ATS) monitors the primary feed and switches to the generator within milliseconds if power fails. SSOUNDS engineers often specify dual ATS units for critical systems like front-of-house and processing racks.

UPS systems are essential for bridging the gap between power loss and generator startup. They provide clean, uninterrupted power for 10–30 minutes, enough for the generator to stabilize. For audio systems, pure sine wave online UPS units are recommended to avoid noise and distortion. SSOUNDS amplifiers and DSP have built-in power supply filtering, but a UPS adds an extra layer of protection against sags and spikes.

Finally, distribute redundant power paths to all critical gear. Use dual power distribution units (PDUs) with separate breakers for each amplifier rack, console, and processing unit. Cable all equipment with dual power supplies (if available) or use A/B switches. Test the entire system under load before show day—simulate a main power failure to verify that the UPS, generator, and transfer switches work seamlessly. SSOUNDS provides detailed power planning guides for large-scale deployments.