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Wednesday, May 18, 2011
Michael MacDonald 05/18/11 03:00 PM, 3 CommentsWith the New Year off to a roaring start, most of us are optimistic for a bigger and better year. It’s also the time when we look at the previous year’s financial statements in preparation of the company’s income tax filing. Usually, we first focus on the “top line” or revenue. We all have a tendency to put a lot of emphasis on how much the business grossed over the course of the year. Next, we look at gross margin,… View this story
Filed in: Live Sound • Feature • Poll • Study Hall • Audio • Business • Concert • Education • Engineer • Line Array • Loudspeaker • Manufacturer • Mixer • Monitoring • Signal • Sound Reinforcement • System • Technician -
Monday, March 28, 2011
Michael MacDonald 03/28/11 01:15 PM, 3 CommentsWell it’s that time of year! The start of the summer touring season is fast approaching. Yes, it’s the time of year when things really start to get busy. Comments like, “It’s so busy I can’t breathe,” are often heard. Too many balls in the air, and they begin to be dropped. Calls don’t get returned, and hair gets pulled out. Time management is the key to getting more done in any business. Recently, at a conference of dealers from… View this story
Filed in: Live Sound • Feature • Poll • Study Hall • Audio • Business • Digital • Education • Installation • Loudspeaker • Mixer • Signal • Sound Reinforcement • System -
Thursday, March 17, 2011
Michael MacDonald 03/17/11 11:17 AM, 1 CommentProfessional audio equipment keeps getting better, as clearly evidenced by enhanced loudspeaker systems, high-resolution digital mixing consoles, ever-more-robust low distortion power amplifiers and digital signal processing “wonder boxes.” Further, with the advent of new interconnect options, sound systems are beginning to gain immunity from ground loops that can serve up dreaded hum and buzz. Suffice to say that the improved list goes on and on, with a lot more new equipment coming out soon! At the same time, the public… View this story
Filed in: Live Sound • Feature • Opinion • Poll • Study Hall • Audio • Business • Digital • Education • Installation • Line Array • Loudspeaker • Mixer • Signal • Sound Reinforcement • System • Technician -
Thursday, December 23, 2010
Mike Sokol 12/23/10 09:30 AM, 0 CommentsProvided by HOW To Church Sound Workshops. Few things can affect the quality of a sound as speakers being out of polarity. You can lose bass response, cancel your vocals and cause general phase mayhem in your sound system. There are may ways to determine polarity, however here’s a cheap and easy solution to test for proper wiring inside your speaker cabinets before you install them up on the wall and without running any audio signal through them. See… View this story
Filed in: Church Sound • Feature • Poll • Audio • Education • Installation • Interconnect • Signal • Sound Reinforcement • System -
Thursday, December 16, 2010
Joan La Roda 12/16/10 03:41 PM, 0 CommentsThis is the third in a multi-part series. Additional segments are available here. Previously we examined the basics of cardioid subwoofer systems. These examples continue that series. Example 2. “Measurements on a real system: two facing forward and one backward” In this example our cardioid configuration uses three stacked DAS LX218A subwoofers. The top and bottom ones are facing forward while the centre one is firing backward. The DAS LX218A subwoofer is a self-powered system incorporating signal processing (crossover and… View this story
Filed in: Live Sound • Feature • Poll • Audio • Line Array • Loudspeaker • Software • Sound Reinforcement • Subwoofer • System -
Monday, December 06, 2010Joan La Roda 12/06/10 04:55 PM, 0 CommentsThis is the second in a multi-part series. Additional segments are available here. Previously we examined the basics of cardioid subwoofer systems. This example continues that series. Example 1. “Scaled down measurements: one cabinet in front and one cabinet behind” Before trying to do these adjustments for the first time in a real- life situation, where one may not always have enough time and where conditions are far from ideal, scaled down measurements can be handy to get some practice… View this story
Filed in: Live Sound • Feature • Poll • Audio • Loudspeaker • Signal • Sound Reinforcement • Subwoofer • System -
Friday, December 03, 2010Joan La Roda 12/03/10 10:59 AM, 2 CommentsThis is the first in a multi-part series. Additional segments are available here. In general, we say that a speaker, or a group of speakers, radiates with a cardioid pattern when it radiates more energy forward than it does backward. Strictly speaking, however, a cardioid pattern is heart shaped (hence the name) and is represented mathematically by the equation ρ = (1 + cos σ), where σ represents the horizontal angle. Setting up subwoofers such that they radiate this way… View this story
Filed in: Live Sound • Feature • Poll • Audio • Loudspeaker • Signal • Sound Reinforcement • Subwoofer • System -
Friday, October 01, 2010
Joan La Roda 10/01/10 01:30 PM, 0 CommentsIn the previous two segments of this series we discussed phase and polarity, what causes phase to vary, what is meant by phase alignment, coherence curves, and we took a look at the first of three illustrative examples. If you haven’t yet read the first two articles in the series, which are available here, I’d urge you to do so. If you’re up to speed and ready to continue, let’s take a look at the rest of our examples Example… View this story
Filed in: Live Sound • Feature • Poll • Audio • Line Array • Loudspeaker • Mixer • Sound Reinforcement • System -
Monday, September 27, 2010
Joan La Roda 09/27/10 03:15 PM, 0 CommentsIn the first part of our series, we took a look at what exactly phase and polarity are, what causes phase to vary, and what is meant by phase alignment. Coherence Curve The coherence curve that Fast Fourier Transform based measurement systems provides indicates the probability that the measurement is reliable. It’s very common to find a coherence curve (ranging from 0 to 1, or from 0% to 100%, depending on the measurement system) with low values in part of… View this story
Filed in: Live Sound • Feature • Poll • Audio • Loudspeaker • Mixer • Signal • Sound Reinforcement • System -
Tuesday, September 21, 2010Joan La Roda 09/21/10 03:25 PM, 0 CommentsThis is the first in a three-part series on phase alignment. Additional segments of the series are available here. FFT based field measurement systems have made it possible for us to do phase alignment at fixed installations as well as at live events, where every venue demands a different approach. This is particularly important these days, since mid-high boxes are often flown and subwoofers remain on the ground, meaning that phase differences at the listener location can be very significant.… View this story
Filed in: Live Sound • Feature • Poll • Audio • Loudspeaker • Manufacturer • Signal • Sound Reinforcement • System
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