Sound Systems Let There Be Sound

In the beginning there was a great void in worship services. A place where the readings and sermons could not be heard and the message lost to the flock. However, a booming voice could be heard, "Let there be sound!" And there was sound, and the flock saw that it was good, and they said that it was good and it was good.

While I am paraphrasing scripture to make a point, I have great reverence for spiritual services and for the word of God. My experience with services has varied from small communities of worship to large congregations, bursting at the seams on Easter or Christmas Masses. The one thing that I found in all was a message of hope and of brotherly love. The problem was I couldn't always hear that message well. This was not due to a lack of vocal ability by the pastors or lectors; it was simply the effect of a large venue and the aggregate noise of many people together. Adding in curious and bored children and it can often be very difficult to focus in on the Word, as it is shared. That is why many congregations have cried out "Let there be Sound!"

The solution to this problem is simple, and no longer prohibitively expensive; a professional sound system. One company which produces many different products to meet the needs of this market is Anchor Audio. Other sources of professional sound equipment include Bogen, CSI-Speco and Amplivox. From large PA systems, to voice and music systems, many options exist. A church has considerations which many other venues do not, which makes it wise to seek out a professional audio dealer for advice on how to best meet those needs. Certainly, a good voice system, which provides comprehensive sound coverage throughout the church, is required. This system should offer high quality sound, with low distortion to ensure that the message is heard clearly. Multiple audio inputs are likely necessary, to accommodate the lectors, musical leaders, choir, and pastor or priest. Some of these inputs are well suited to wired technology, but others are better suited to wireless options. The fixed positions, like a podium for the lecture and/or musical director are well suited for wired microphones, as they do not require mobility. The choir can also use wired, dynamic microphones, to provide coverage of the entire choir without the need for a complex network of microphones. The pastor or priest is usually best suited to a wireless microphone with a High Quality Beltpack Transmitter, as this allows free movement in delivering a sermon and in preparation of offerings or the Eucharist. All of these options can be integrated into appropriate sound systems. The Anchor audio products are largely modular, offering flexible designs, which can accommodate these various input and speaker configurations without being overly expensive or complex.

Speaker options are important to consider as well. Depending on the size, layout and acoustic qualities of the church, different speaker types and configurations may be best. Once again, a trained sound system expert from a full line dealer would be able to assist in the development of speaker system plans. In new buildings, built in sound systems are often the way to go, as they can be seamlessly designed into the structure. Ceiling speakers, tile speakers, horn loudspeakers, baffle speakers, foreground and background speakers, column speakers and self amplified speakers are all available to meet various needs. Knowing what each type can accomplish, as well as the significance of frequencies and decibel ranges and distortion values are all important when designing the complete speaker layout. Understanding coverage areas and dispersion of sound from the various speakers is also crucial to prevent sound dead zones or, just as bad, echoes or overlaps. Lastly, it is important to know where the microphones and speakers will be placed to avoid feedback problems from close proximity. For those who are not familiar, feedback is the cause of the loud screeching noise when a microphone is placed to close to a speaker.

By properly designing a church Wireless Microphone Systems, the message can be heard and enjoyed by all in attendance. For churches with multiple services, it also reduces the strain on the voices of the readers, speakers and choir members. Speak with a full line audio dealer to see about the sound system to meet your needs and varied pricing options, and "Let there be sound!"

How Far Cable Take Television Go

The number of Americans who can remember the days before reality television and the 24-hour news cycle is shrinking. However, during the late 1940s and early '50s, there were only four networks on the air. In addition to national news broadcasts, the four major networks aired programs like "I Love Lucy," "The $64,000 Question," and "Captain Kangaroo." These programs eventually became an important part of America's cultural history.

Unfortunately, not every household in the country could enjoy these iconic programs. During that time, television signals were transmitted from an antenna to homes within the antenna's line of sight. People living in mountainous or remote areas were outside of the antenna's range and without access. Primitive systems were developed by communities in these areas to provide residents with access to these programs. Typically, someone would place an antenna on a hill and run wire to each of the television sets. The television signal weakened as it traveled the length of the cable, so amplifiers were placed at about every 1,000 feet to boost the strength of the signal. While this system allowed the signal to reach homes that were not served by the antenna, it was not reliable. Amplifiers caused noise and distortion, plus the failure of one amplifier caused the failure of the entire system.
The 1960s were a period of slow growth for the industry. By that time, nearly one million customers received service from approximately 800 cable systems. Entrepreneurs and well-known corporations began investing in equipment and infrastructure. However, at the urging of the local stations, the government expanded the jurisdiction of the Federal Communications Commission to restrict systems from carrying signals from distant markets. Growth was stifled until the early 1970s.

Advances in technology, and decreased government regulation, led to big growth during the '70s. The first pay-TV network was launched in 1972. The network could be broadcast nationally through the use of a satellite distribution system using domestic satellite transmission. Soon after, an Atlanta television station airing sports and classic movies would begin to use the satellite service to broadcast nationwide to become the country's first superstation. As a result of the use of satellite technology, the number of program networks would multiply rapidly.

Cable really took off during the 1980s and '90s. The FCC relaxed regulations placed on the industry, which prompted cable companies to invest in wiring the country. By 1998, there were 171 national video networks and the average customer received at least 54 channels. The industry only continued to grow over the decades.

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The Advantages of Wireless Microphones

A wireless microphone, as the name implies, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Wireless microphone systems are a key component in almost every broadcast, motion picture, theatrical and sound stage production, as well as corporate, religious and educational venues.

The professional models transmit in VHF or UHF radio frequency and have true diversity reception which eliminates dead spots and the effects caused by the reflection of the radio waves on walls and surfaces in general. The VHF band is located in the frequency range between 30 MHz and 300 MHz. This is the other common band used in wireless microphone systems, but it is not used as commonly as UHF PLL Dual Channel Wireless Microphone Systems.

VHF wireless microphones are typically those of the fixed frequency type, meaning that the user has no opportunity to switch frequencies if interference is encountered. The UHF band is located in the frequency range between 300 MHz and 3 GHz and is the most common band used in wireless microphone systems. Depending on national regulations, which differ for every country, wireless microphones may operate in the range between 470 MHz and 865 MHz. These frequencies are shared with over-the-air TV broadcasts. So when selecting a frequency, the user must know what frequencies to stay away from to avoid interference.

Advantages and disadvantages of wireless microphones

The biggest advantage of a wireless microphone system is its freedom of movement. Since a wireless microphone is not connected by any cable, the user does not get restricted by the length of the cable. Wireless microphone sends audio signals over the air, rather than through microphone cables. The microphone is attached to a transmitter and the signals are received by a receiver connected to the audio console or recording device. The user can avoid cable problems which frequently occur because of the constant moving and stressing of the cables.

Though wireless microphones are in use everywhere, it has its disadvantages too, regardless of its state of the art technology. It has only a limited operation time due to low battery life. It does not work if the user takes the microphone out of range. Sometimes there may be the possibility of interference with other radio equipment or other microphones.

Different kinds of wireless microphones

Generally they are two types of wireless microphone systems - handheld wireless microphone and bodypack wireless microphone. Handheld microphone is like a normal wireless microphone, but it has a bigger body to accommodate the transmitter and battery pack. Bodypack microphone is a small box housing the transmitter and battery pack, but not the microphone itself. It is attachable to the belt or elsewhere and has a wire going to headset, lavaliere microphone or a guitar.

Some of the manufacturers of wireless microphones offer a plug on transmitter for existing wired microphones which plugs into the XLR output of the microphone and transmits to the receiver. This offers many of the benefits of an integrated system, and also allows microphone types to be used without a cable.