Understanding Power Consumption, Part 2

[B]This is the second half of the article, split due to post length limits. The first part is here: [/B][URL=”https://soundforums.net/entries/1191-Understanding-Power-Consumption-Part-1″]Understanding Power Consumption, Part 1[/URL][B] Case study: Allen & Heath GLD80 mixing console[/B] A&H’s datasheet lists the maximum power consumption of the GLD80 surface at 95w, and the AR-2412 stage box …

Power

Understanding Power Consumption, Part 1

One of the foundational necessities of a successful gig is having adequate safe power. This can be a particular challenge at the Junior Varsity level. This article will be a high-level flyover, providing some basic insight into how the gear we use works. Future articles will go deeper. What’s a …

Measurement and Optimization

Stair Cardioid Subwoofer Array

The advantages of cardioid sub configurations are well known, however they also have some drawbacks. Because of the nature of the arrays in their two-in-line and inverse-stacked variations, cardioid systems reduce the acoustical pressure not only on the stage, but also at FOH, the most important area! This is in …

Fundamentals of RF Coordination for Live Sound Part 2 - Antennas

Wireless

Fundamentals of RF Coordination for Live Sound Part 2 – Antennas

There seems to be a lot of discussion on various pro audio forums about choosing antennas and how to best configure your wireless systems for optimum performance. There are descriptions of many examples of setups that have worked well for specific situations, and different opinions about general rules of thumb. …

Power

Basic Receptacle Testing

We’ve had a few posts recently about blown up gear due to power problems. Here is a basic metering procedure that should give you a good indication of the safety of a standard North American receptacle (NEMA 5-15R or 5-20R). Standard disclaimers: Performing this test can give you reasonable assurance …

Networking

TCP/IP Networking Primer

OK, so here’s a basic primer on TCP/IP networking. Applicable to basic computer networking, including audio devices with a TCP/IP (aka “Cat5”) port and standard networking. I’m not going to bother to explain the acronyms. Make up a cute and memorable name for each if you like. So the overview …

Fundamentals of RF Coordination for Live Sound Part 1 - The RF Environment

Wireless

Fundamentals of RF Coordination for Live Sound Part 1 – The RF Environment

As live sound audio engineers, we are often required to deploy multiple channels of wireless audio equipment to satisfy the ever-growing trend of eliminating visible cables from performance areas. The job falls into our laps simply because its audio gear, and operating it perfectly should be within the parameters of …

Wireless

Optimizing Wireless Microphone Systems for the Real World, Pt. 3

In part one of this series, We covered the basics of gain structure as it pertains to wireless mic systems, and transmitter placement. In part two, antenna types and cable loss were discussed. Now, we’ll touch on antenna placement. Transmitter Antennas As already briefly mentioned in part one, transmitters should …

Wireless

Optimizing Wireless Microphone Systems for the Real World, Pt. 2

In the last article, I covered the basics of gain structure and why proper setup is important with wireless microphones. Also, part 1 described proper transmitter placement, including the fact that many pastors and CEOs alike should have to spend 6 weeks in microphone basic training before being allowed to …

Measurement and Optimization

A Tale of Two Processors

It is widely known that different Digital Signal Processors (DSPs) sound different. I have heard this difference ascribed to everything from sample rate to the quality of the limiters, whatever that means. Certainly there is a difference to be found, but I suspect it is not going to be discovered …

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Understanding Power Consumption, Part 2