McIntosh MC2301 Owner's Manual
McIntosh MC2301 Owner's Manual

McIntosh MC2301 Owner's Manual

Tube power amplifier
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McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com
MC2301
Tube Power Amplifier
Owner's Manual

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Do you have a question about the MC2301 and is the answer not in the manual?

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John MacKinnon
June 15, 2025

My MC2301 was blowing fuses. Changed all the tubes, it stopped blowing fuses, but shuts off after about 30 seconds after turn on.

1 comments:
Mr. Anderson
August 19, 2025

The McIntosh MC2301 may shut off after 30 seconds due to a power circuit overload. This can happen if multiple amplifiers turn on at the same time, causing a surge that trips circuit breakers or blows fuses. The MC2301 includes a delayed Power Control Out to help prevent this, but if improperly configured or if the surge is too large, the unit may still shut down.

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Summary of Contents for McIntosh MC2301

  • Page 1 McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com MC2301 Tube Power Amplifier Owner’s Manual...
  • Page 2: Safety Instructions

    The lightning flash with arrowhead, within an equilateral The exclamation point within an equilateral triangle is triangle, is intended to alert the user to the presence of intended to alert the user to the presence of important uninsulated “dangerous voltage” within the product’s en- operating and maintenance (servicing) instructions in the closure that may be of sufficient magnitude to constitute literature accompanying the appliance.
  • Page 3 IMPORTANT! INSTRUCTIONS FOR REMOVAL OF FOAM INSERTS OVER THE VACUUM TUBES PRIOR TO CONNECTING THE A.C. POWER SUPPLY CORD, START ON THE NEXT PAGE.
  • Page 4: Unpacking The Mc2301

    Tubes located on both sides of the under the Tube Service Agency. Power Amplifier. Covers and the 1. Orient the MC2301 so the Front Panel is fac- Warning Sheet ing you and remove the Warning Sheet. Refer to BOTH Foam Inserts must be figure 1.
  • Page 5 Chassis Adequate ventilation extends the trouble free life of screws the MC2301. Always allow air to flow through the ventilation holes on the bottom of the amplifier and a means for the warm air to escape at the top. Refer to figure 9 and the information on the next page for placement and installation of the MC2301.
  • Page 6: Table Of Contents

    Customer Service General Information Your decision to own this McIntosh MC2301 Tube If it is determined that your McIntosh product is in Caution: The MC2301 Amplifier weight is 116 pounds (52.6 kilograms). It requires two or more per- Power Amplifier ranks you at the very top among need of repair, you can return it to your Dealer.
  • Page 7: Connector Information

    • Power Output XLR Connectors • Gold Plated Connectors and Tube Socket Con- The MC2301 is a Tube Power Amplifier with a capa- tacts Below is the Pin configuration for the XLR Balanced bility of 300 watts into 2, 4 or 8 ohm speakers with Input, Input/Output Connectors on the MC2301.
  • Page 8: Dimensions

    Dimensions Dimensions The following dimensions can assist in determining the best location for your MC2301. Front View of the MC2301 " 45.09cm 11" " 5/16 Side View of the MC2301 27.94cm 31.27cm 21" 54.61cm 20" " 50.86cm 4.12cm " Rear View of the MC2301 26.70cm...
  • Page 9: Installation

    Installation Installation The MC2301 can be placed upright on a table or shelf, standing on its four feet. It also can be custom " 9/16 44.62cm installed in a piece of furniture or cabinet of your choice. The four feet may be removed from the bottom of the MC2301 when it is custom installed as out- lined below.
  • Page 10 Notes...
  • Page 11: Rear Panel Connections And Switch

    Preamplifier trol Center audio output or A/V Control Cen- Caution: The Loudspeaker Negative Connections are above chassis ter audio output ground. Do not combine any connections together, ground them or connect with another MC2301 or other Power Amplifier.
  • Page 12: How To Connect

    Loudspeaker Cable Distance vs Wire Gauge Guide 6. Connect the MC2301 Power Cord to a live AC wires cannot slip out. Refer to figures 4, 5 & 6. outlet. 25 feet...
  • Page 13 How to Connect Preamplifier Loudspeaker Connect to AC Outlet...
  • Page 14: How To Connect For Bi-Amp

    Gauge Numbers or AWG (American Wire Insert the spade lug connector or prepared sec- 8. Connect the MC2301 Power Cord to a live AC Gauge). The smaller the Gauge number, the larger the tion of the cable end into the terminal side ac- outlet.
  • Page 15: How To Connect For Bi-Amp

    How to Connect for Bi-Amp Preamplifier Power Amplifier Two Loudspeaker Connect to AC Outlet...
  • Page 16: Front Panel Displays And Controls

    Front Panel Displays and Controls Meter indicates the Power Standby Power On and Sentry Output of the Amplifier Monitor Tube Protection Activa- tion Indicator POWER Switch Turns METER Switch selects AC Power On/Off, or the display modes of the On/Remote Power Output Meter and Meter Illumination...
  • Page 17: How To Operate

    How to Operate Power On least 95% of the power output with only there is a short circuit at the MC2301 Output Termi- To have the MC2301 automatically turn On or Off a single cycle of a 2000Hz tone burst.
  • Page 18: Technical Description

    McIntosh has ever manufactured. The distortion limits for the MC2301 are no more than 0.5% at rated power output for all frequencies from 20Hz to 20,000Hz. Typical performance at mid frequencies is less than 0.05%.
  • Page 19 Protection Circuitry and a push-pull balanced circuit and are coupled together Power Supply in the unique McIntosh MC2301 Dual Core Output Transformer. Refer to figure 14 on the next page. It provides low distortion power transfer at frequen- cies from below 20Hz to well beyond 20,000Hz with optimum impedance points of two ohms, four ohms and eight ohms.
  • Page 20 Technical Description, con’t Power Supply Circuits To compliment the fully balanced design of the MC2301 the power supply utilizes a very large Power Transformer (golf ball is for size comparison). Refer to figure 17. It is enclosed in the legendary McIntosh Pot-...
  • Page 21: Technical Description

    Figure 16 is switched On, a (5-12V) signal operates the power relay in the MC2301. The MC2301 also has a remote Power Control Out Jack. The Power Control signal from this jack is delayed by a fraction of a second so that the turn on power surge of the next power ampli- fier occurs at a later time.
  • Page 22: Specifications

    250 milliwatts to rated power, 20Hz to 20,000Hz 240 Volts, 50/60Hz at 2.75 Amps Standby: 1 watt Note: Refer to the rear panel of the MC2301 for the cor- Frequency Response rect voltage. +0, -0.5dB from 20Hz to 20,000Hz +0, -3.0dB from 10Hz to 100,000Hz...
  • Page 23: Packing Instruction

    Failure to do this will result in shipping damage. To protect the tubes during shippment, the two Foam Inserts removed from the MC2301 need to be TUBE re-inserted. Follow the unpacking instructions on COVERS pages 3-4 in the reverse order.
  • Page 24 McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, NY 13903 www.mcintoshlabs.com The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice. Printed in the U.S.A. McIntosh Part No. 04116200...

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