McIntosh MC300 Owner's Manual
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McIntosh MC300 Owner's Manual

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See also: Service Manual
MC300
POWER
AMPLIFIER

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Summary of Contents for McIntosh MC300

  • Page 1 MC300 POWER AMPLIFIER...
  • Page 3 MC300 POWER AMPLIFIER...
  • Page 4 1. Read all instructions - Read the safety and operating instructions before operating the instrument. IMPORTANT 2. Retain Instructions - Retain the safety and operating instructions for future reference. 3. Heed warnings - Adhere to warnings and operating instructions. SAFETY 4.
  • Page 5 Your decision to own this piece of Mclntosh stereo equipment ranks you at the very top THANK among discriminating music listeners. You now have "The Best". The Mclntosh dedication to "quality", is assurance that you will receive thousands of hours of musical enjoyment from this unit.

  • Page 6: Table Of Contents

    INTRODUCTION TABLE OF INSTALLATION CONTENTS CUSTOM INSTALLATION DIAGRAM RECOMMENDED VENTILATION CUTOUT IN MOUNTING SHELF HOW TO CONNECT INPUTS CONNECTING DIAGRAMS 9, 10 HOW TO CONNECT OUTPUTS 11, 12, 13 FRONT PANEL CONTROLS 13, 14 REAR PANEL SPECIFICATIONS TECHNICAL DESCRIPTIONS 16,17...
  • Page 7 Some speaker designs have impedance characteristics that may dip to as low as 1 or 2 ohms at certain frequencies. It is possible for the MC300 to deliver as much as 85 amperes peak current into these lower impedance loads.
  • Page 8 The MC300 can be placed upright on a table or shelf, standing on its own plastic feet. INSTALLATION The MC300 can be custom installed in a cabinet of your choice. The mounting panel cutout, mounting shelf ventilation cutout and amplifier dimensions are shown on page 7.

  • Page 9: Custom Installation Diagram

    CUSTOM INSTALLATION DIAGRAM RECOMMENDED VENTILATION CUTOUT IN MOUNTING SHELF...

  • Page 10: How To Connect Inputs

    Connect the left balanced output cable from a preamplifier to the LEFT BALANCED IN- PUT on the power amplifier. Connect the right output to the RIGHT BALANCED INPUT. Pin configuration for the XLR INPUT connectors on the MC300 PIN 1: Shield or ground.

  • Page 11: Connecting Diagrams

    STEREO CONNECTIONS MONO (BRIDGED CONNECTIONS)
  • Page 12 MONO PARALLEL CONNECTION...

  • Page 13: How To Connect Outputs

    If the actual load impedance of a speaker is lower than the specified impedance, particularly at different parts of the frequency range, it will cause no problems. The high current output capacity of the MC300 will produce the extra current necessary to properly drive the speaker under these conditions.
  • Page 14 The MC300 can be used to feed a constant voltage line, often used in background music HOW TO applications. For a 25 volt line, use the 2 ohm outputs on the amplifier. CONNECT Because the crosstalk between channels on the MC300 is almost non existent, each channel OUTPUTS can be used as a separate monophonic amplifier.

  • Page 15: Front Panel Controls

    HOW TO CONNECT AC POWER HOW TO The MC300 is designed to operate on 120 volts 50/60 Hz. Plug the AC power cord directly CONNECT into a wall outlet or into an AC power control strip. Make certain that the AC power outlet OUTPUTS used has at least 12 amperes capacity available.

  • Page 16: Rear Panel

    DC Power Control signal from a Mclntosh Control Center or similar com- patible accessory, sent to the POWER CONTROL IN CONNECTOR. The ON position turns on the MC300 as long as its power cord is connected to a live AC outlet.

  • Page 17: Specifications

    STEREO POWER OUTPUT INTERMODULATION DISTORTION SPECIFICATIONS 300 watts into 8, 4, or 2 ohm loads is the STEREO minimum sine wave continuous average 0.005% maximum if instantaneous peak power output per channel from 20Hz to power output does not exceed twice the 20,000Hz with both channels operating.

  • Page 18: Technical Descriptions

    Power Guard, a unique feature of Mclntosh amplifiers, assures that each channel of the DESCRIPTION MC300 will deliver full power free of clipping distortion. Clipping is caused when an amplifier is asked to produce more power output than its design is capable of delivering with low distor- tion.
  • Page 19 Four large heatsinks provide cooling for the 20 power output transistors. The mechanical and electrical design of the MC300 is the result of the many years of engineering and manufacturing experience held by the staff at Mclntosh. This "know how", the meticulous attention to design and production details, makes the MC300 one of the finest amplifiers ever produced by Mclntosh Laboratory.
  • Page 20 04042500...

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