The PA-250 is powerful enough to drive up to 250 70V speakers and/or paging horns. The small 1U rack size chassis is possible because the PA-250 uses new amplifier technology that is three times more efficient than old designs competitors use. High efficiency means much less heat dissipation, smaller size, higher reliability and lower cost. The 70V distributed audio paging systems are able to put more speakers on a wire run, have longer speaker wire runs, use smaller gauge wire, and set the volume of each speaker independently. In addition to being able to connect to any type of analog telecom interface, such as paging port, trunk input, analog station, FXO (loop start), and FXS (ring trip), the PA-250 also includes a direct microphone input for paging. Other inputs include background music, aux input, and a variety of loud ringing and chime options. A 600-ohm output allows additional paging amplification to be added for an even larger system. The PA-250 features individual level controls with LED indicators for each input, automatic peak limiting, multiple amplifier protection modes, an adjustable automatic level control, bass and treble controls.
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