Entries by Pat Brown

Understanding Amplifier Power Ratings

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by Pat Brown

This is a 5-part series discussing audio amplifier fundamentals and performance metrics.

The audio power amplifier is perhaps the most under-specified component in the signal chain, whose performance is often based only on a face value power

… Read more

Room Survey 33 – S. N. Shure Theater

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Location: Niles, IL

Investigator: Pat Brown

Description:  Shure Inc., a manufacturer of high performance microphones, required a flexible 142-seat theater space to support audio and video presentations for large groups and to demonstrate their products through live performances. This link… Read more

Room Survey 32 – Eisemann Center

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Location: Dallas/Ft. Worth, TX Area

Investigator: Pat Brown

The Main Hall:  The main performance hall is 116,900 sq ft (10,860 m2) 1563 seat venue. Detail information on the Eisemann Center can be found here. The hall was … Read more

Gain Structure Made Easy

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Download a test waveform that will help you quickly set the gain structure of your system.

This is an updated version of a previous article. After using the meter test file for a few years, I was inspired to produce … Read more

Power Ratings Use and Abuse

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by Pat Brown

Is a power rating for the sales force or for the system designer?

“One number” power ratings for both loudspeakers and amplifiers are now accepted at face value and seldom questioned. Large numbers are tossed around, often … Read more

Room Survey 31 – O’Reilly Theater

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Location: Pittsburg, PA

Investigator: Pat Brown

Description:  The O’Reilly Theater is a 650 seats semi-reverberant space located in the famous Pittsburg cultural district. The reverberation time is just under 1 sec, with the acoustics of the space optimized for natural … Read more

What does “Constant Voltage” Mean?

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“Constant voltage” is one of the more confusing terms used by the audio industry. Pat Brown brings clarification to this term.

Those new to the audio field are often dismayed by the subjective nature of many audio terms, which may … Read more