Akai-AM-39-维修电器原理图手册

AKAI SERVICE MANUALMODEL AM-49STEREO INTEGRATED AMPLIFIERMODELAM-39,49SPECIFICATIONSPower outputS/N ratioAM-49.+140 W+140 W (DIN,4 ohmsPhono (MM)85 dB (IEC-A)at 1 kHz,1%distortion)Phono (MC).71 dB(IEC-A)80W+80W(FTC,8ohms at 30 HzTuner,CD,Tape…101 dB (IEC-A)to 20 kHz,0.05%distortion)Audio mute-20dBAM-39…100W+100 W(DIN,4 ohmsFull mute-70dBat 1 kHz,1%distortion)Channel separation...........65 dB (1 kHz)/55 dB (10 KHz)60W+60W(FTC,8 ohms at 30 HzCross talkto 20 kHz,0.05%distortion)CD to Phono.................90 dB (1kHz,500 mV Input level)Power band widthCD to Tuner/Tape..........90 dB (1kHz,500 mV Inputievel)AM-4944445 Hz to 60 kHz /0.1%distortionRequired speaker impedanceAM-39…10 Hz to 60 kHz /0.1%distortionA0fB…4to16ohmsTotal harmonic distortion..0.005%(1 kHz,8 ohms)Aand B.......…8to16ohmsFrequency responce........5 Hz to 100 kHz (+0 dB,-3 dB)Power requirements .......220-230 V,50 Hz for Europe exceptTone controlU.K.±10dB(100Hz)240 V,50 Hz for U.K.Treble±10dB(10kHz)Power consumptionInput sensitivity/ImpedanceAM-49…210WPhono (MM)...........2.0 mV/47 kohmsAM-39…170WPhono (MC)200 uV /100 ohmsDimensions…425M×156(Hx370(DmmTuner,CD,Tape.150 mV /47 kohmsWeightMaximum input levelAM-49.10.9kgPhon0(MM）.150mVAM-39…10.2kgTuner,CD,Tape.......9V(at tone control flat)Damping factor…48(1 kHz,8 ohms)Standard accessoryResidual noise.0.1mV(0EC-A)Remote control unitBatteries for remote control ............Operator's manual........For improvement purposes,specifications and design are subject to change without notice.