Ep13 FOH Signal Flow

Key takeaways

Understanding signal flow starts with knowing where your inputs come from and how they move through the system to the outputs.
Digital patching allows for more efficient routing and managing of signals, particularly useful in complex setups such as festivals.
Always turn on your console and processing gear before powering on your speakers, and do the reverse when shutting down to protect your equipment.
Using VCA and group channels appropriately can streamline your mixing process and maintain control over your sound.
Speaker processors are key in managing sound quality, and it's essential to understand their configuration for optimal performance.

Summary

Understanding Front-of-House Signal Flow

The episode dives into the foundational elements of front-of-house (FOH) signal flow. The hosts clarify how a microphone or DI on stage connects through a split to either a stage rack or straight to the console. With analog consoles, traditional cabling routes the signal directly from the split to FOH, while digital systems can utilize lighter cable runs via BNC, Fiber, or Ethernet. The discussion touches on the physical implications of these various systems, including size and weight considerations.

Insights on Signal Routing and Processing

Building on the basics, the episode breaks down the transition from console to speaker processors and output to amplifiers. The hosts discuss the importance of speaker processors, including brand-specific configurations and how they influence sound quality. They also explore the role of matrices and groups, emphasizing the benefits of proper organization in signal flow and the need for precise routing when managing various outputs.

Digital Patch Management

The conversation shifts to digital patching, highlighting its advantages over traditional analog setups, particularly in festival settings. The hosts discuss the concept of 'festival patches' — master lists provided by sound companies for multiple artists sharing microphones and inputs. They also review the intricacies of double patching, enabling sound engineers to maintain a consistent signal path while managing any changes on the fly.

Best Practices for Turning Systems On and Off

Towards the end, the hosts provide critical best practices for powering on and off a sound system, crucial for preventing damage to equipment. They stress the importance of always turning on the console and processing gear before the speakers, and ensuring speakers are powered off before the other devices in the chain. This segment wraps up with personal anecdotes highlighting their learnings in safe power sequencing.

Wrap-Up and Future Topics

The episode concludes by summarizing the discussions on FOH signal flow and pointing toward the next episode that will delve into system design. The hosts encourage listeners to practice the methods discussed and to prepare for more in-depth topics in future episodes.

Show notes

In this episode, we jump into the first steps of understanding the signal flow of a FOH system. Covering the physical wiring, and the patching inside of desks. We jump through things like festival patches, methods for managing your patch, and how get out of the desk to PA systems. It's a quick overview on the basics, to be continued in the next episode on system design.--- Support this podcast:

https://anchor.fm/livesoundbootcamp/support