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City of Santa Ana Public Library Renovation <br />Smith, Fause & McDonald Inc.Group 4 Architecture Research + Planning, Inc. <br />Conform SetASI #026 – August 72, 20254 Group 4 Project No. 22575-01 <br />SECTION 27 4116-12 INTEGRATED AUDIOVISUAL SYSTEMS AND EQUIPMENT <br />4)Input Impedance: 15,000 ohms minimum; unbalanced, or balanced <br />as shown on drawings. <br />5)Hum & Noise: At least 94 dB signal-to-noise ratio. <br />6)Channel Separation: At least 75 dB at 1 kHz. <br />7)Phase Shift: Less than plus20 degrees from 20 Hz to 20 kHz. <br />8)D.C. Offset: Less than 10 millivolts. <br />B.Power Amplifiers, 2 Channel, 70 Volt <br />1.Drawing Symbol <br />a.PA50-70 <br />b.PA100-70 <br />c.PA200-70 <br />d.PA300-70 <br />e.PA600-70 <br />2.Comply with Power Amplifiers, General, in this Section. <br />3.Power Output Per Channel, continuous average sine wave power into 70 Volt line <br />impedance, not less than. <br />a.PA50-70, 50 Watts <br />b.PA100-70, 100 Watts <br />c.PA200-70, 200 Watts <br />d.PA300-70, 300 Watts <br />e.PA600-70, 600 Watts <br />4.Dimensions: Not to exceed 3 rack units for 2 channels. <br />a.Manufacturer, PA50-70 <br />1)Stewart CVA-50-1 <br />2)Crown <br />3)QSC <br />4)Peavey <br />5)Or equal <br />b.Manufacturer, PA100-70 <br />1)Crown CH-1 <br />2)QSC <br />3)Peavey <br />4)Or equal <br />c.Manufacturer, PA200-70 <br />1)Crown CH-1 <br />2)QSC <br />3)Peavey <br />4)Or equal <br />d.Manufacturer, PA300-70 <br />1)Crown CH-1 <br />2)QSC <br />3)Peavey <br />4)Or equal <br />e.Manufacturer, PA600-70 <br />1)Crown CH-2 <br />2)QSC <br />3)Peavey <br />4)Or equal <br />C.Power Amplifiers, 2 Channel, Low Impedance <br />1.Drawing Symbols <br />a.PA 25 <br />b.PA100 <br />c.PA200