Dukane-1A729-mix-电气原理图手册

.2SECTION 1GENERAL INFORMATION1.1 INTRODUCTIONThis manual provides installation and service information for the Dukane Model IA729 60-WattIn-Wall Amplifier,and the Dukane IA731 120-Watt In-Wall Amplifier.These amplifiers aremanufactured by Dukane Corporation,St.Charles,lllinois 60174.This manual is divided into three sections,as follows:1.General Information.2.Installation Information.3.Service Information.1.2 GENERAL DESCRIPTIONThe Dukane Models IA729 and IA731 transistorized in-wall amplifiers are designed for use ascomplete sound distribution systems providing standard 25-Volt or 70-Volt speaker line output,input facilities for up to eight microphones,a radio tuner and phono input.These amplifiers havea power output of 60-Watts and 120-Watts respectively.An Octave Filter (438-496),Compressor(436-408).Dual Microphone Expander (438-407).and Remote Volume Controls may be installedas options at the output for improved sound reproduction.Terminals are provided for each option.1.3 TECHNICAL SPECIFICATIONSPower Output:Fuse:MODEL IA729:60-Watts (RMS)MODEL 1A729:(1)1.5 Ampere Slo-BloMODEL 1A731:120-Watts (RMS)MODEL 1A731:(1)3 Ampere Slo-BloDistortion:Noise Level:Less than 2%at rated power output,Microphone:Better than 60dB downfrom 40 to 20 kHz.from 300 uV referenceFrequency Response:input.40 to 20 kHz 2dB.EnvelopemeasuredAuxiliary:75 dB below output.at-6 dB from full output on 70 V line.Inputs:Power Source:(4)microphone,low impedance105-125VAC.single phase,50-60 Hz.(4)optional microphone inputsPower Required:(2)auxiliary high impedance inputsMODEL 1A729:150 Watts at rated out-Input Sensitivity:put,30 Watts at idle.Microphone:300 uV maximum.MODEL 1A731:240 Watts at rated out-Auxiliary:0.4 V rms.put,40 Watts at idle.