C48 Audio Preamplifier Owner's Manual - McIntosh

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SpecificationsSpecificationsFrequency Response+0, -0.5dB from 20Hz to 20,000Hz+0, -3dB from 15Hz to 100,000HzTotal Harmonic Distortion0.002% from 20Hz to 20,000HzRated Output (Main)2.5V Unbalanced, 5V BalancedMaximum Voltage Output8V RMS Unbalanced, 16V RMS BalancedSensitivity (for rated output)High Level, 450mV unbalanced, 900mV balancedPhono MM, 4.5mVPhono MC, 0.45mVSignal To Noise Ratio (A-Weighted)High Level, 100dBPhono, 88dBEqualizer ControlsAMPLITUDE+15+10+ 5I 0NDEC - 5IBELS -10Input ImpedanceHigh Level, 22K ohms unbalanced, 44k ohms balancedPhono MM, 47K ohms; 50 to 750pF, in 50pF stepsPhono MC, 25, 50, 100, 200, 500 or 1,000 ohms;100pFMaximum Input SignalHigh Level, 5V Unbalanced, 10V BalancedPhono MM, 50mVPhono MC, 5mVVoltage GainHigh Level to Record Output: 0dBHigh Level to Main Output: 15dBPhono MM to Record Output: 40dBPhono MC to Record Output: 60dBOutput Impedance220 ohmsHeadphone Load Impedance100 ohms to 600 ohmsDigital Input Sample RatesOptical: 16Bit, 24Bit - 32kHz to 96kHzCoaxial: 16Bit, 24Bit - 32kHz to 96kHzUSB: 16Bit, 24Bit - 32kHz to 192kHz24Bit, 32Bit - 32kHz to 96kHzPower Control and Trigger Output12VDC, 25mAPower RequirementsField AC Voltage conversion of the C48 is not possible.The C48 is factory configured for one of thefollowing AC Voltages:100 Volts, 50/60Hz at 30 watts110 Volts, 50/60Hz at 30 watts120 Volts, 50/60Hz at 30 watts220 Volts, 50/60Hz at 30 watts230 Volts, 50/60Hz at 30 watts240 Volts, 50/60Hz at 30 wattsStandby Power, less than 0.5 wattsNote: Refer to the rear panel of the C48 for the correctvoltage.Overall DimensionsWidth is 17-1/2 inches (44.45cm)Height is 6 inches (15.24cm) including feetDepth is 18 inches (45.72cm) including the Front Panel,Knobs and CablesWeight26.5 pounds (12.0 kg) net, 41 pounds (18.6 kg) in shippingcartonShipping Carton DimensionsWidth is 27 inches (68.6cm)Height is 12 inches (30.5cm)Depth is 25 inches (63.5cm)-1520 50 100 200 500 1k 2k 5k 10k 20kFREQUENCY IN HERTZ26
Packing InstructionsPacking InstructionsIn the event it is necessary to repack the equipment forshipment, the equipment must be packed exactly asshown below. It is very important that the four plasticfeet are attached to the bottom of the equipment.This will ensure the proper equipment location on thebottom pad. Failure to do this will result in shippingdamage.Use the original shipping carton and interior partsonly if they are all in good serviceable condition. Ifa shipping carton or any of the interior part(s) areneeded, please call or write Customer Service Departmentof McIntosh Laboratory. Refer to page 4. Pleasesee the Part List for the correct part numbers.Quantity Part Number Description1 033838 Shipping carton only4 033837 End cap1 033836 Inside carton only1 033725 Inner carton top pad1 034301 Bottom pad2 034446 Foam plug4 017937 Plastic foot4 400159 #10-32 x 3/4” screw4 404080 #10 Flat washerFOAM PLUG27
Page 1 and 2: McIntosh Laboratory, Inc. 2 Chamber
Page 3 and 4: Thank YouYour decision to own this
Page 5 and 6: Introduction and Performance Featur
Page 7 and 8: InstallationInstallationThe C48 can
Page 9 and 10: Connecting ComponentsConnecting Com
Page 11 and 12: How to use the Remote ControlHow to
Page 13 and 14: SetupHow to Operate the Setup ModeY
Page 15 and 16: Setup, con’t4. Rotate the INPUT C
Page 17 and 18: Setup, con’tComm Port Baud RateTh
Page 19 and 20: How to Operate the C48ance perform
Page 22: How to Operate the C48, con’tThe

C48 Audio Preamplifier Owner's Manual - McIntosh

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