McIntosh MC-122 User Manual

MC122 Power Amplifier
OWNERS
MANUAL
MC122
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549
Thank You, Please Take A Moment,
Customer Service and Table of Contents
Thank You
For your decision to own this McIntosh MC122 Power Amplifier ranks you at the very top among discriminating music listeners. You now have The Best. The McIntosh dedication to Quality, is assurance that you will receive many years of musical enjoyment from this unit.
Please take a short time to read the information in this manual. We want you to be as familiar as possible with all the features and functions of your new McIntosh MC122. This will ensure that you receive all the performance ben­efits this equipment can offer you, and that it will become a highly valued part of your home entertainment system.
Please Take A Moment
The serial number, purchase date and McIntosh dealer name are important to you for possible insurance claim or future service. The serial number is located on the rear panel of the equipment. The spaces below have been provided for you to record that information:
Serial Number:
Purchase Date:
Dealer Name:
Customer Service
If at any time you have questions about your McIntosh MC122 Power Amplifier, contact your McIntosh dealer. Your dealer is familiar with your McIntosh equipment as well as other brands that may be included in your system and is best qualified to help you.
If it is determined that your MC122 is in need of repair, you can return it to your dealer or you can return it to McIntosh Laboratory. Contact the McIntosh Repair Depart­ment for assistance at,
Table of Contents
Thank You .......................................................................... 2
Please Take a Moment ....................................................... 2
Table of Contents ............................................................... 2
Safety Instructions ............................................................. 3
Introduction ....................................................................... 4
Performance Features ........................................................ 4
Installation ......................................................................... 5
Rear Panel Controls and Connections ............................... 6
How to Connect ................................................................. 7
Front Panel Displays and Switch ....................................... 8
How to Operate.................................................................. 9
Specifications .................................................................. 10
Packing Instruction .......................................................... 11
NOTES:
1. Connecting Cables are available from the McIntosh Parts Department:
Data and Power Control Cable Part No. 170-202
Six foot, shielded 2 conductor, with 1/8 inch stereo mini phone plugs on each end.
2. For additional connection information, refer to the owners manual(s) for any component(s) connected to the MC122 Amplifier.
3. There is a built-in turn on delay which will mute the speaker outputs for approximately two seconds when the amplifier is turned on.
4. It is very important that loudspeaker cables of adequate size be used in your music system, to ensure that there will be no power loss or heating. Cable size is specified in Gauge numbers or AWG, (American Wire Gauge). The smaller the Gauge number, the larger the wire size:
If your loudspeaker cables are 25 feet (7.62m) or less, use at least 18 Gauge (AWG) wire size or larger. If your loudspeaker cables are 50 feet (38.1m) or less, use at least 16 Gauge (AWG) wire size or larger. If your loudspeaker cables are 100 feet (76.2m) or less, use at least 14 Gauge (AWG) wire size or larger.
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-3512 FAX: 607-724-0549
Copyright 1998  by McIntosh Laboratory, Inc.
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IMPORTANT SAFETY
INSTRUCTIONS!
PLEASE READ THEM BEFORE
OPERATING THIS EQUIPMENT.
WARNING SHOCK HAZARD ­DO NOT OPEN.
The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to consti-
tute a risk of electric shock to persons
.
Safety Instructions
Attention: pour pevenir les chocs elecriques pas utiliser cette fiche polarisee avec un prolongateur, une prise de courant ou un autre sortie de courant, sauf si les lames peuvent etre inserees afond ans en laisser aucune partie a decouvert.
7. For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and dis­connect the antenna or cable system. This will prevent damage to the product due to lightning or power line surges.
8. Do not use attachments not recommended in this owners manual as they may cause hazards.
AVIS RISQUE DE CHOC ­NE PAS OUVRIR.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
NO USER-SERVICEABLE
PARTS INSIDE. REFER
SERVICING TO
QUALIFIED PERSONNEL
To prevent the risk of electric shock, do not remove cover (or back). No user serviceable parts inside. Refer servicing to qualified personnel.
General:
1. Read all the safety and operating instructions, con­tained in this owners manual, before operating this equipment.
2. Retain this owners manual for future reference about safety and operating instructions.
3. Adhere to all warnings and operating instructions.
4. Follow all operating and use instructions.
5. Warning: To reduce risk of fire or electrical shock, do not expose this equipment to rain or moisture. This unit is capable of producing high sound pres­sure levels. Continued exposure to high sound pres­sure levels can cause permanent hearing impair­ment or loss. User caution is advised and ear protec­tion is recommended when playing at high volumes.
6. Caution: to prevent electrical shock do not use this (polarized) plug with an extension cord, receptacle or other outlet unless the blades can be fully in­serted to prevent blade exposure.
Installation:
9. Locate the equipment for proper ventilation. For ex­ample, the equipment should not be placed on a bed, sofa, rug, or similar surface that may block ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet, that may impede the flow of air through the ventilation openings.
10. Locate the equipment away from heat sources such as radiators, heat registers, stoves, or other appliance (in­cluding amplifiers) that produce heat.
11. Mount the equipment in a wall or cabinet only as de­scribed in this owners manual
12. Do not use this equipment near water; for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement or near a swimming pool, etc.
13. Do not place this product on an unstable cart, stand, tripod, bracket, or table. The equipment may fall, caus­ing serious injury to a person, and serious damage to the product.
Connection:
14. Connect this equipment only to the type of AC power source as marked on the unit.
15. Route AC power cords so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, con­venience receptacles, and the point where they exit from the instrument.
16. Do not defeat the inherent design features of the polar­ized plug. Non-polarized line cord adapters will defeat the safety provided by the polarized AC plug. If the plug should fail to fit, contact your electrician to re­place your obsolete outlet. Do not defeat the safety pur­pose of the grounding-type plug.
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Safety Instructions cont,
Introduction and Performance Features
17. Do not overload wall outlets, extension cords or inte­gral convenience receptacles as this can result in a risk of fire or electric shock.
Care of Equipment:
18. Clean the instrument by dusting with a dry cloth. Un­plug this equipment from the wall outlet and clean the panel with a cloth moistened with a window cleaner. Do not use liquid cleaners or aerosol cleaners.
19. Do not permit objects of any kind to be pushed and/or fall into the equipment through enclosure openings. Never spill liquids into the equipment through enclo­sure openings.
20. Unplug the power cord from the AC power outlet when left unused for a long period of time.
Repair of Equipment:
21. Unplug this equipment from the wall outlet and refer servicing to a qualified service personnel under the fol­lowing conditions:
A. The AC power cord or the plug has been damaged. B. Objects have fallen, or liquid has been spilled into
the equipment. C. The equipment has been exposed to rain or water. D. The equipment does not operate normally by follow-
ing the operating instructions contained within this
owners manual. Adjust only those controls that are
covered by the operating instructions, as an im-
proper adjustment of other controls may result in
damage and will often require extensive work by a
qualified technician to restore the product to its nor-
mal operation. E. The equipment has been dropped or damaged in any
way. F. The equipment exhibits a distinct change in perfor-
mance - this indicates a need for service.
22. Do not attempt to service beyond that described in the operating instructions. All other service should be re­ferred to qualified service personnel.
23. When replacement parts are required, be sure the ser­vice technician has used replacement parts specified by McIntosh or have the same characteristics as the origi­nal part. Unauthorized substitutions may result in fire, electric shock, or other hazards.
24. Upon completion of any service or repairs to this prod­uct, ask the service technician to perform safety checks to determine that the product is in proper operating condition.
Introduction
Now you can take advantage of traditional McIntosh stan­dards of excellence in the MC122 power amplifier. Two 120 watt high current output channels will drive any high quality loudspeaker system to its ultimate performance. The MC122 reproduction is sonically transparent and abso­lutely accurate. The McIntosh Sound is The Sound of the Music Itself.
Performance Features
· Power Output
The MC122 consists of two separate power amplifier chan­nels, each capable of 120 watts into 4ohm speakers with less than 0.005% distortion.
· High Current Output
A peak output current of 18 amperes per channel ensures that the MC122 will successfully drive high quality loud­speakers such as McIntosh for a truly exciting sound expe­rience.
· Power Guard
Both channels include the patented McIntosh Power Guard circuit that prevents the amplifier from being overdriven into clipping with its harsh distorted sound that can also damage your valuable loudspeakers.
· Sentry Monitor
McIntosh Sentry Monitor power output stage protection circuits are present on both channels to ensure the MC122 will have a long and trouble free operating life.
· Thermal Protection
Built-in thermal protection circuits guard against overheat­ing which could shorten the normal long life expectancy of your McIntosh power amplifier.
· Convenient Hookup
Rear panel gold plated input jacks and heavy duty speaker terminals make hookup easy.
· Power Control
Rear panel power control in and out jacks allow the ampli­fier to be turned on remotely from a McIntosh preamplifier or control center.
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