Get Your Motor Running…

May 19, 2004 12:00 PM, Editors


Education Guide

Mix is gearing up to present its longstanding annual Audio Education Guide in its November 2014 issue. Want to have your school listed in the directory, or do you need to update your current directory listing? Add an image, program description, or a logo to your listing! Get your school in the Mix Education Guide 2014.

At a recent Naval air show, five Peavey power amps and a series of two-way, 12-inch woofer-outfitted enclosures backed the roaring Blue Angels and the U.S. Navy's finest pilots at Wings Over Meridian (Miss.) 2004, held April 17-18 at Naval Air Station Meridian.

Relying on Peavey Impulse® 1012 enclosures and GPS® 3500 power amps, senior Peavey clinician and veteran live audio guru Marty McCann assembled an effective, fully distributed audio system that cut through the din of jet engines from World War II-era planes to present-day bombers.

By placing the 31 total loudspeaker enclosures at 50-foot intervals along the crowd line—one power amp for every six speakers—McCann could deliver the audio feed at a consistent volume level. "At air shows, you can always hear the system, but it may be too loud in certain spots or it may be hard to understand because of a time lag between the clusters and fill speakers," said Marty Papizan, civilian electrical engineer at Ground Electronics, NAS Meridian. "With the system Peavey came up with, no matter where you're at, you won't get more than a 22-millisecond delay in sound. That's natural reverb."

Running 31 loudspeakers in parallel along the 1,600-foot perimeter caused a natural voltage drop, which McCann countered with the GPS 3500 amps and a series of line transformers. "We had to put 400-watt transformers at each speaker to counter the drop in voltage so every speaker sounded the same and put out the same volume," said Papizan. Each of five GPS 3500 power amplifiers provided a 100-volt distribution line to power six Impulse 1012 loudspeakers.

For more information, visit Peavey online at

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