Archive for the 'Sound' Category

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The Lie of Surround Sound

How much program is really in those rear speakers you spent so much money to buy? What is that super subwoofer you have accomplishing? The answers to those questions; maybe not much.

Before everyone starts throwing stones, let me explain.

Lets start with the subwoofer. What is the point of a subwoofer? No, the point is not to gyrate the popcorn you are stuffing down. Different size speakers naturally lend themselves to producing different frequencies better. Small “tweeters” are specially designed to reproduce the highest frequencies in the audio spectrum. Larger speakers lend themselves better to producing lower frequencies. A set of 2-way main speakers should be pretty hefty with at least eight inch woofers in my opinion. A good eight inch speaker should have no trouble handling frequencies all the way down to 20Hz. If your main speakers can handle frequencies all the way down to 20Hz, a subwoofer is no longer needed.

Next, lets talk about the center speaker. Maybe someone can set me straight on this, but I can not think of a good purpose for the center speaker. It seems to me, that if your system includes a good set of main speakers, the center speaker is close to worthless. If you want a sound positioned in the center of the sound field, it can be panned evenly left and right to achieve the same effect as putting it solely in the center speaker.

Now since we have eliminated the center speaker and the subwoofer by adding a great set of main speakers, the rear speakers are all that is left to get rid of. Depending on the setup, 5.1 or 7.1, a surround system could include 2 or 4 different rear speakers. These speakers really complete the ultimate theater experience by immersing the viewer in the sound. Dolby 7.1 is really overkill and most movies do not even support it, so we can automatically reduce our system to just two rear speakers. Now many people will say that they must have their rear speakers for the full theater effect. For the rest, remember first of all, almost any movie made before 1990 does not have surround. Also, any other material which you shove through your system, over 95% of it is going to have material located in the front speakers only. So for those of you who want to have their rear speakers for the 5% of material that uses the rear speakers 5% of the time, go ahead, get yourself a set of rear speakers. For everyone else, realize its just not worth it.

All this is to say that cheep surround sound is really a lie that has been brought into. Investing in a great set of main speakers will yield a much better result than buying a full surround system set.

How to: Mix Lead Vocals

mixing_boardI have been doing live sound for many years now and if there is one thing I have learned, it is that vocals are one of the most important parts of any mix.

The first step in establishing a successful mix is to make sure that the proper microphone is being used. I will assume here that you have already picked out a good microphone but if you have not, I recommend you start with a Shure SM58. It is a standard vocal microphone which works for almost anyone.

Next, proper placement of the microphone is mandatory. The microphone should be positioned approximately perpendicular to the vocalists mouth with the windscreen just touching or a couple of inches away from the lips. If the vocalist is more than 5 or 6 inches away from the microphone, the resulting sound quality will be very poor. Also, make sure the vocalist is placed properly on the stage. If you place your vocalist directly in front of the drum kit, you might be picking up more drums in the vocal microphone than you want to.

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Designing a Sound System for a Portable Church

speakersThere are a million different factors that come in to play when designing a sound system of any size. The number of factors seems to double if sound system in discussion is a portable one. So where does one even being to nail down details?

I first asked myself the question; what does it mean to be portable? In my mind, being portable means two things. First, making sure equipment is protected for the rough road life. Second, quick setup is important to get your system up and running as fast and as smooth as possible. Lets take a look at each of these areas in more depth.

Protection. To protect the system, EVERYTHING needs to be properly placed in a case. Equipment cases are costly but not having cases for equipment is NOT an option.

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Technical Considerations for Outgrown Worship Facilities

bloatedChurches blessed with growing congregations sooner or later have to make some important decisions on the most effective way to continue ministry once facilities have been outgrown. It is important not to dismiss the technical needs of a larger congregation when looking for the appropriate solution. The easiest thing to do, nothing, is neither biblical nor appealing. Doing nothing will stunt church growth and frustrate both leaders and the congregation. So what other options are there?

One of the most obvious solutions is to upgrade to a larger facility. The increased size of the space and the large audience will require a technical system to match it. Large, complex audio, video, and lighting systems will be required to enable each worshiper see and hear every aspect of the service. Also, due to the complexity of the systems, the church may need to hire additional staff just to manage these technical systems. The large price tag of installing and operating these technical systems combined with the price of the building can sometimes be crippling for a church looking for a more affordable option. Other churches, which can afford this option and are looking embrace technology in order for services to appeal to larger demographics, may find that this solution a good choice.

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