Syn-Aud-Con Class Visits Mega-church By Pat Brown

The Louisville, KY Sound Reinforcement for Designers class visited Southeast Christian Church on the first evening of the seminar. We were treated to an overview of the main auditorium as well as the new youth facility. Read more »

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I was working on some array predictions and wondered just how close “like” loudspeakers are in response. To find out I rounded up some loudspeaker pairs from the warehouse to do some comparisons. I limited the test to loudspeakers that could be measured up close and personal – within a couple of meters. This would minimize any errors due to aiming and the environment. I also looked at the magnitude of the frequency response only, as the phase response will be ultra sensitive to distance errors, and one cannot be sure if a phase slope difference is due to the loudspeaker placement or tolerance issues within the loudspeaker itself. I felt it was cheating to use the phase plot to “position” the loudspeaker so I decided to ignore phase altogether. Read more »

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The SynAudCon Team

Newsletter

VOLUME 3, NUMBER 2

January, 1976

© Copyright 1976, Don Davis

Some of the sections of the site are reserved for SynAudCon Members only. If you want to read more, consider joining the SynAudCon Community for an annual fee of $55. Read more about the benefits of membership.

In Part 1 I discussed grounding for safety. In this article I will discuss the role of grounding in keeping audio and other technical systems free of hum, buzz, and other unwanted noises.

“Ground” is not a magical pile of sacred dirt which absorbs hum and buzz and absolves us of any guilt regarding improper interconnection practice. Quiet systems are the result of all noise sources and noise entrance points being dealt with adequately. We will only be dealing with the grounding aspects today.

Audio systems should only be grounded according to local electrical codes, not by any exotic bizarre means, such as a separate ground rod, which may not provide electrical safety under fault conditions. Read more »

Some of the sections of the site are reserved for SynAudCon Members only. If you want to read more, consider joining the SynAudCon Community for an annual fee of $55. Read more about the benefits of membership.

It is generally accepted that a large loudspeaker power rating is a sign of quality and something to be desired. It may be the performance metric that has the greatest influence on the consumer’s buying decision. A closer look reveals that it is far less significant than other metrics regarding the performance of the loudspeaker. Read more »