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RH-AUDIO 100 Volt Line Power Amplifier



Besides 100 volt line mixer amplifiers RH-AUDIO also manufactures 100 volt line power amps, which boost current gain by receiving the lower-power audio signals from preamplifier or mixer to drive the connected loudspeakers.

Preamplifier or audio mixer is generally connected to the power amplifier, the front amplifier is used to amplify the voltage, the power amplifier is used to the amplify the current, the preamplifier is the link device between the various sound source devices and the power amplifier, as the output signal electrical level of the sound source equipment is low, the power amplifier can not work properly.

The power amplifiers feature XLR and 6.35mm input jacks also a group of link output to supply the audio signal to additional amplifiers. And features many of the same comprehensive protection circuits typical, complete protection is provided for output short circuit, overload, high temperature, peak current limiters.

The 100 volt line power amplifier is assembled with all the elements in a 2U chassis offering 350/450/650 watts, available with either 70/100-volt or 4 to 16 ohms(Ω) loads. Widely used to make announcements in public, institutional and commercial buildings and locations—such as schools, stadiums, shopping malls and so on.

There are below important notes for wiring the speakers connected with the pa power amplifier:

100V line output
This is most commonly used for PA system. Only use 100V line loudspeakers with transformers. All loudspeakers are wired in parallel and the sum of their power must not exceed the rated output power of the amplifier. It is advisable not to load the amplifier at more than 70% of its rated output power when using music sources,furthermore 70V line and 4-16Ω low impedance outputs are also available as following given information.

70V line output
This system is common in the USA, it operates on the same principles as 100V line except that at rated output power the amplifier has 70V RMS on its output terminals.

4-16Ω low impedance output
This output allows connection of low impedance loudspeakers without transformers,
When two or more loudspeakers are used ensure that they are wired in such a way in Series, or in Parallel, or in Series & Parallel Combination that total load impedance remains 4Ω and 16Ω.

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