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Фрагмент инструкции
.Ensure the amp is adequately ventilated, with free airflow to the front and rear panels. Keep away from other heat sources. If the amps are mounted in a rack with other amps, ensure there is adequate cool air flow front and rear. Note that air is drawn in through the back panel, and exhausted through the front panel. .NEVER cover the amplifiers, as they may overheat. .PQA power amplifiers are designed to fit standard 19 racks, with a 2U height and 17 depth. We recommend the use of rear rack supports, especially if the rack is to be mobile. Use shake proof washers or thread lock adhesive to prevent mounting bolts becoming loose in transit. .Ensure that the AC power supply is correct for your amplifier. The required AC supply is stated on the rear panel next to the AC power input. . Ensure that you use the correct type of mains lead for your equipment and country. This must be free from damage and easily accessible during use. PQA OVERVIEW It is well-known the PQA series professional amplifier is designed by the specialist who has full experience and new model equipment. To raise reliability of the amplifier, PQA series professional amplifier has been installed with short distance cooling unit, high-speeding and consistency to increase the life of the power parts.They all have adopted mature and reliable circuit with SMT technology. The conventional amplifier applies tunnel-model cooling system, this kind of system has long distance for heat dissipation,the hot air is distributed with difficulty, and theradiator is very hot at the top, but too cool at the bottom, the temperature difference goes between 20.-40.,those system produces temperature difference easily in the power parts, the electric current is high in hot parts, which results in its damage and reduces the using-life and reliability. PQA series amplifiers has full-protection, including: Soft start function to prevent wave shock at power-on. Delay function for prevent shock at switch power on. DC protection. Over-electric current protection. Cut-wave protection. Over heat protection. ATTENTION Never put any parts on the top of the amplifier. Using fixed power socket that must be has enough capacity to prove power. Never switch the power on and off continuously at the same time. Donruction in the air vent of front panel. Input stereo level can be adjust by own gain mixer, in bridge-model connection, the adjustment will adjust by CHA channel mixer. The output connector have 3 kind model, tie-model, phone model and professional speakon connector for connecting. When using stereo, bridge, mono function, the connect model must be same than model switch selected. When output high-power signal continuously, the amplifier should be has speedup in the cooling fan, it may be have low noise produce in this equipment, it is normally. The general gain of the amplifier can be adjust by gain knob, the input level have 0.77V, 1.4V, full-power out and fixed 26dB gain 3 band should be sel...
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