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McIntosh MC 250

McIntosh MC 250
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MC 250
SERVICE INFORMATION
STARTING
WITH
SERIAL
NO.
23L48
MCINTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK
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McIntosh MC 250 Specifications

General IconGeneral
TypeSolid State
Power Output50 Watts per channel
Input Sensitivity0.5V
Signal to Noise Ratio90 dB
Damping Factor20
Input Impedance250k ohms
Frequency Response20 Hz - 20 kHz
Output Impedance4, 8 Ohms
Weight35 lbs

Summary

Electrical Specifications

Power Output

Specifies the RMS continuous power output for the amplifier across different load impedances.

Harmonic Distortion

Details the maximum acceptable harmonic distortion levels from 20Hz to 20,000Hz.

Intermodulation Distortion

Defines the maximum intermodulation distortion for frequencies between 20 Hz and 20,000 Hz.

Frequency Range

Indicates the amplifier's frequency response at rated output for both channels.

Output Damping Factor

States the minimum damping factor for any output tap, indicating amplifier control over speakers.

Input Sensitivity & Impedance

Provides the required input voltage for rated output and the input impedance.

Hum & Noise

Specifies the signal-to-noise ratio, indicating the level of unwanted noise.

Power Requirements

Lists the voltage, frequency, and power consumption at zero and rated signal output.

MC 250 Block Diagram

Schematic Notes

Replacement Parts

Capacitors

Lists capacitor part numbers, descriptions, and their corresponding McIntosh part numbers.

Diodes

Lists diode types, descriptions, and their corresponding McIntosh part numbers.

Fuses

Details the fuse type and its McIntosh part number for replacement.

Transistors

Lists transistor types, descriptions, and their corresponding McIntosh part numbers.

Potentiometers

Lists potentiometer types, their function, and their corresponding McIntosh part numbers.

Resistors

Lists resistor types, values, wattage, and their corresponding McIntosh part numbers.

Switches

Lists switch types, their function, and their corresponding McIntosh part numbers.

Transformers

Lists transformer types and their corresponding McIntosh part numbers.

Miscellaneous Items

Lists other items like feet, manuals, knobs, and cords with part numbers.

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