Public address installation 100V Line When installing a 100V line system, it is important that the correct size of cable is used to connect the speakers to the amplifier. The following chart gives an...
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Sound level The decibel is often used in acoustics to quantify sound levels relative to a 0dB reference. Sounds above 85dB are considered harmful, while 120dB is unsafe and 150dB causes physical damage to the...
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