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7: Maroon 5 “V” Tour

FRONT of HOUSE editor George Petersen

Revisiting Audio History

First of all, Happy New Year to everyone! By now, I’m sure you’re aware that 2016 is an election year. But whatever your party/candidate inclinations, 2016 brings great news, as political rallies and events all generate much needed $$$ into the pockets of sound companies paid to spread the message. So get out and be a part of the process (and collect some cash along the way) while helping create a piece of history.

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Bob Heil with the Heil Sound PR40 instrument mic.

Bob Heil: 50 Years of Innovation

Heil Sound, known worldwide as a manufacturer of high-performance, dynamic microphones, is marking 2016 as “50 Years of Maximum Rock & Roll” with a year-long celebration. Certainly, his popular microphones for studio, live sound and radio users are part of the continuing success of Heil Sound. However, that represents only a very small part of the audio legend that is Bob Heil.

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The movement of iron filings around magnetic poles is one of the most common examples that can show the “invisible” effect of magnetic fields.

Magnetism and Neodymium

Loudspeaker drivers, switch mode power supplies, chain motors, dynamic microphones, throne shakers, disk drives and step-down transformers. What ties these pro audio staples together? The answer is magnetism. Magnetism, magnetic behavior, and magnets are everywhere in professional audio. If one needs to control electricity or drive physical motion using electricity, magnetism is almost always involved.

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This monitor placement (with speakers placed 120° off-axis) works well with supercardioid mics, such as a Shure Beta 87A, yet is prone for feedback with a cardioid mic like a SM58. With cardioid mics, monitors should be 180° off-axis (directly behind the mic) for best results.

Is That Ringing in My Ears Bothering You?

Removing Feedback from Stage Monitors

Just when I thought that club sound systems had evolved past Y2K, I get a gig at a place where the house monitor system is (I’ll be polite here) out-of-date. While the overwhelming trend for stage monitoring has moved heavily toward IEMs (even among local club acts), there are still plenty of performers using wedges. As wedges aren’t going away any time soon, let’s examine the concept of “ringing out” stage monitors.

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