Entries by Pat Brown

Amplifier Loading – The Parade Route Scenario

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In the article, Pat Brown describes several ways that loudspeakers can be driven using a parade route scenario.

There are several competing philosophies among audio power amplifier designers as to how an amplifier should behave under load. They can be … Read more

Common Amplifier Format: Crown CTs 2000

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by Pat Brown

Pat Brown continues with “Common Amplifier Format (CAF)” series. In this article, he overviews the Crown CTs 2000 amplifier, a workhorse in the commercial sound market.

Crown Audio makes a lot of amplifier models to address the

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Common Amplifier Format: Ashly SRA-4150

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by Pat Brown

Much can be learned about amplifiers by reviewing/comparing a common set of specifications that were collected in the same manner. In this series, I’ll use the Common Amplifier Format (CAF) to periodically overview a selected make and

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Room Survey 37 – Crossroads Fellowship

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by Pat Brown

Our spring 2019 Sound System Design seminar was held at Crossroads Fellowship in Raleigh, NC. The massive building is a converted power tool distribution warehouse, gutted and redesigned as an assembly space for Crossroads Fellowship church. It … Read more

Driving the 4 ohm Load

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by Pat Brown

Amplifier power ratings are good for window shopping and water cooler chats. If you need to drive a real-world 4 ohm Load, you need the matrix.

Long ago, 8 ohms was established as a practical impedance for

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A New Tool for Sound System Training

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Few areas of audio have become more confusing than amplifier power ratings. We have developed a tool to remove the veil, revealing not only the power rating, but what it is based upon.

We’re now in our third decade at … Read more