McIntosh MC462 Owner'S Manual Download Page 1

Page: 1 / 20

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com

MC462

Quad Balanced

Power Amplifier

Owner’s Manual

Summary of Contents for MC462

Page 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 www mcintoshlabs com MC462 Quad Balanced Power Amplifier Owner s Manual ...

Page 2: ...arate Sheet Important Additional Operation Information Guide Thank You and Please Take a Moment 2 Technical Assistance and Customer Service 2 Table of Contents 2 General Information 2 Connector and Cable Information 3 Introduction 3 Performance Features 3 Dimensions 5 Installation 6 Rear Panel Connections and Switch 7 Output Terminals and How to Connect 8 9 Output Terminals and How to Connect for ...

Page 3: ...sh designed and manufactured Output Auto formers provide an ideal match between the amplifier output stages and speaker loads of 2 4 and 8 ohms The Autoformers also provide perfect DC protection for your valuable loudspeakers Balanced and Unbalanced Inputs Balanced connections guard against induced noise and allow long cable runs without compromising sound quality Power Guard The patented McIntosh...

Page 4: ...location for your MC462 Dimensions Front View of the MC462 Rear View of the MC462 Side View of the MC462 17 1 2 44 5cm 8 7 8 22 5cm 9 7 16 24 0cm 11 3 4 29 9cm 16 13 16 42 7cm 3 16 0 5cm DISABLED 16 5 8 42 2cm 2 1 4 5 7cm 8 3 8 21 3cm 2 3 16 5 6cm 20 1 2 52 1cm 12 1 2 31 8cm ...

Page 5: ...oper ating temperature A custom cabinet installation should provide the fol lowing minimum spacing dimensions for cool opera tion Allow at least 6 inches 15 24cm above the top 2 inches 5 08cm below the bottom 3 inches 7 62cm behind the rear panel and 2 inches 5 08cm on each side of the Power Amplifier so that airflow is not obstructed Allow 2 1 2 inches 6 35 cm in front of the mounting1 panel for ...

Page 6: ...ed INputs LEFT and RIGHT Channels for audio cables from a Pre amplifier or A V Control Center audio output Balanced OUTputs LEFT and RIGHT Channels for an audio cable to the next Power Ampli fier Input RIGHT OUTPUTS Connection for a 2 ohm Loudspeaker Rear Panel Connections and Switch Fuse holder refer to information on the rear panel of your MC462 to determine the correct fuse size and rating RIGH...

Page 7: ...r Cable Connec tion Do not over tighten Refer to figure E Caution Do not connect the AC Power Cord to the MC462 Rear Panel until after the Loudspeaker Connections are made and the protective Termi nal Connections Covers are installed Failure to observe this could result in Electric Shock The connection instructions below together with the MC462 Connection Diagram located on the separate folded she...

Page 8: ...is connections for 8Ω ohms Loudspeakers If the Loudspeaker s impedance is in between the available connections use the nearest lower impedance connection Refer to General Informa tion Note 3 on page 2 for additional information WARNING Loudspeaker terminals are hazard ous live and present a risk of electric shock For additional instruction on making Loudspeaker Connections con tact your McIntosh D...

Page 9: ...Diagram located on the separate folded sheet Mc1B is an example of a typical audio system Your system may vary from this however the actual components would be connected in a similar manner For additional information refer to Connec tor and Cable Information on page 3 When connecting Loudspeakers to the MC462 it is very important to use cables of adequate size so there is little to no power loss i...

Page 10: ...n between the available connections use the nearest lower impedance connection Refer to General Informa tion Note 3 on page 2 for additional information 10 Referring to figure H connect the Loudspeaker hookup cables with ba nana plugs into the hole at the top of the terminal to the MC462 Negative Output Terminal and Posi tive Output Terminal indentified as 2Ω ohms 4Ω ohms or 8Ω ohms connection to ...

Page 11: ...isk of electric shock For additional instruction on making Loudspeaker Connections con tact your McIntosh Dealer or McIn tosh Technical Support 15 Attach the Terminal Connections Covers to the MC462 Rear Panel with the previously removed Screws Refer to figure 6 16 Connect the MC462 power cord to an active AC outlet ...

Page 12: ...s the display modes of the Power Output Meter and Meter Illumination Meter indicates the Right Channel Output of the amplifier LED indicates when the Left Channel Amplifier POWER GUARD circuit activates Meter indicates the Left Channel Output of the amplifier LED indicates when the Right Channel Amplifier POWER GUARD circuit activates ...

Page 13: ...ire Refer to figures 10 and 11 Lights Off Meter lights are turned off and the meter will contin ue to indicate the power output Note When Power Control Input of the MC462 is connected to an Audio Preamplifier or A V Control Center with Remote Meter Illumination Control the Meter Illumination will automatically be remotely con trolled On Off with the METER Switch set to the WATTS or HOLD position W...

Page 14: ...osh MC462 Output Autoformer It provides low distortion power transfer at frequencies from below 20Hz to well beyond 20 000Hz with optimum impedance points of two ohms four ohms and eight ohms The unequaled Technical Description Figure 15 McIntosh Laboratory the company who introduced the world s first amplifier that could be called High Fidelity has done it again The McIntosh engineering staff has...

Page 15: ... impossible to measure In the rare event of a power amplifier output circuit failure the Technical Description ThermalTrak DC BIAS OUTPUT MUTE THERMAL SENSORS BALANCED AMP POWER GUARD ATTENUATOR INPUT MODE SWITCH AMP AMP UNBALANCED OUTPUT UNBALANCED INPUT BALANCED INPUT BALANCED OUTPUT ThermalTrak DC BIAS Block Diagram of the Power Amplifier one channel shown Figure 14 Figure 17 Figure 16 expertis...

Page 16: ...sh Power Guard circuit Power Guard elimi nates the possibility of ever overdriving the amplifier into clipping Refer to figures 20 21 and 22 An overdriven amplifier can produce both audible and inaudible distortion levels exceeding 40 The audible distortion is unpleasant to hear but the inaudible ultrasonic distortion is also undesir able since it can damage valuable loudspeaker system tweeters Yo...

Page 17: ...lock Diagram of the Power Supply Figure 24 Figure 26 Figure 25 The power amplifier draws high current from the AC power line Therefore it is important that they plug directly into the wall outlet Also most owners desire one power switch for the whole audio system The MC462 is equipped with a circuit that provides remote Power Control from a Mc Intosh A V Control Center Refer to figure 26 When the ...

Page 18: ...g Factor Greater than 40 Input Impedance 22 000 ohms Balanced 22 000 ohms Unbalanced Voltage Gain 29dB 8 Ohms 26dB 4 Ohms 23dB 2 Ohms Power Guard Less than 2 Total Harmonic Distortion with up to a 14dB overdrive signal Power Control Input 5 15VDC less than 1mA Power Control Output 1 and 2 12VDC 50mA maximum total Output is delayed 0 2 seconds from turn On Power Requirements Field AC Voltage conver...

Page 19: ... shipping damage Use the original shipping carton and interior parts only if they are all in good serviceable condition If a shipping carton or any of the interior part s are needed please call or write Customer Service Depart ment of McIntosh Laboratory Refer to page 2 Please see the Part List for the correct part numbers Quantity Part Number Description 1 034052 Shipping carton top 1 034051 Ship...

Page 20: ...ucts is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice Printed in the U S A McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 www mcintoshlabs com McIntosh Part No 04187400 ...

Search results

Summary of Contents for MC462

Reviews:

Related manuals for MC462

Brands by name

Popular brands

McIntosh MC462, Owner'S Manual

Search results

Summary of Contents for MC462

Reviews:

Related manuals for MC462

Brands by name

Popular brands