MC402 Power Amplifier - Berner's

1 McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549 Owner s ManualMC402MC402 Power Amplifier2 IMPORTANT SAFETYINSTRUCTIONS!PLEASE READ THEM BEFOREOPERATING THIS - TO REDUCE RISK OFFIRE OR ELECTRICAL SHOCK, DONOT EXPOSE THIS EQUIPMENT TORAIN OR lightning flash with arrowhead,within an equilateral triangle, is intendedto alert the user to the presence ofuninsulated dangerous voltage withinthe product s enclosure that may be ofsufficient magnitude to constitute a riskof electric shock to USER-SERVICEABLE PARTSINSIDE. REFER SERVICING TOQUALIFIED prevent the risk of electric shock, do not remove cover orback.

2 No user serviceable parts exclamation point within an equi-lateral triangle is intended to alert theuser to the presence of importantoperating and maintenance (servic-ing) instructions in the literature ac-companying the :1. Read these Keep these Heed all Follow all Warning: To reduce risk of fire or electrical shock,do not expose this equipment to rain or unit is capable of producing high sound pres-sure levels. Continued exposure to high sound pres-sure levels can cause permanent hearing impair-ment or loss. User caution is advised and ear protec-tion is recommended when playing at high Caution: to prevent electrical shock do not use this(polarized) plug with an extension cord, receptacleor other outlet unless the blades can be fully in-serted to prevent blade exposure.

3 Attention: pour pevenir les chocs elecriques pasutiliser 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 enlaisser aucune partie a Unplug this equipment during lightning storms orwhen unused for long periods of Only use attachments/accessories specified by :9. The equipment shall be installed near the AC SocketOutlet and the disconnect device shall be easily Do not block any ventilation openings. Install in accor-dance with the manufacturer s Do not install near any heat sources such as radiators,heat registers, stoves, or other equipment (includingamplifiers) that produce Do not use this equipment near Do not expose this equipment to dripping or splashingand ensure that no objects filled with liquids, such asvases, are placed on the Use only with the cart, stand, tripod,bracket, or table specified by the manu-facturer, or sold with the a cart is used, use caution whenmoving the cart/equipment combinationto avoid injury from :15.

4 Connect this equipment only to the type of AC powersource as marked on the Protect the Power cord from being walked on orpinched particularly at plugs, convenience receptacles,and the point where they exit from the Do not defeat the safety purpose of the polarized orgrounding-type ServiceTechnical AssistancePlease Take A MomentThank YouCopyright 2002 by McIntosh Laboratory, serial number, purchase date and McIntosh Dealername are important to you for possible insurance claim orfuture service. The spaces below have been provided foryou to record that information:Your decision to own this McIntosh MC402 Power Ampli-fier ranks you at the very top among discriminating musiclisteners.

5 You now have The Best. The McIntosh dedica-tion to Quality, is assurance that you will receive manyyears of musical enjoyment from this take a short time to read the information in thismanual. We want you to be as familiar as possible with allthe features and functions of your new Number:Purchase Date:Dealer Name:If it is determined that your McIntosh product is in need ofrepair, you can return it to your Dealer. You can also returnit to the McIntosh Laboratory Service Department. For as-sistance on factory repair return procedure, contact theMcIntosh Service Department at:McIntosh Laboratory, Chambers StreetBinghamton, New York 13903 Phone: 607-723-3515 Fax: 607-723-1917If at any time you have questions about your McIntoshproduct, contact your McIntosh Dealer who is familiar withyour McIntosh equipment and any other brands that maybe part of your system.

6 If you or your Dealer wish addi-tional help concerning a suspected problem, you can re-ceive technical assistance for all McIntosh products at:McIntosh Laboratory, Chambers StreetBinghamton, New York 13903 Phone: 607-723-1545 Fax: 607-723-3636A polarized plug has two blades with one widerthan the other. A grounding type plug has twoblades and a third grounding prong. The wideblade or the third prong are provided for yoursafety. If the provided plug does not fit into youroutlet, consult an electrician for replacement of theobsolete Do not overload wall outlets, extension cords or inte-gral convenience receptacles as this can result in a riskof fire or electric To completely disconnect this equipment from the ACMains, disconnect the Power supply cord plug from theAC of Equipment:20.

7 Clean only with a dry Do not permit objects or liquids of any kind to bepushed, spilled and/or fall into the equipment throughenclosure Unplug the Power cord from the AC Power outletwhen left unused for a long period of of Equipment:23. Refer all servicing to qualified service personnel. Ser-vicing is required when the equipment has been dam-aged in any way, such as Power -supply cord or plug isdamaged, liquid has been spilled or objects have falleninto the equipment, the equipment has been exposed torain or moisture, does not operate normally, or hasbeen Do not attempt to service beyond that described in theoperating instructions. All other service should be re-ferred to qualified service When replacement parts are required, be sure the ser-vice technician has used replacement parts specified byMcIntosh or have the same characteristics as the origi-nal part.

8 Unauthorized substitutions may result in fire,electric shock, or other Upon completion of any service or repairs to this prod-uct, ask the service technician to perform safety checksto determine that the product is in proper and Performance FeaturesTable of ContentsSafety 2 Thank You and Please Take a 3 Technical Assistance and Customer 3 Table of Contents, Important Information andConnector 4 Introduction .. 4 Performance 4 Dimensions .. 5 Installation .. 6 Top 8 Rear Panel Connections and Switches .. 9 How to Connect for Stereo .. 10 How to Connect for 12 Front Panel Displays and Controls .. 14 How to 15 Technical 17 Specifications.

9 18 Packing 19 Important InformationCaution: The MC402 Amplifier weight is pounds( kilograms). It requires two or more personsto safely handle when moving the The following Connecting Cable is available from theMcIntosh Parts Department: Power Control Cable Part No. 170-202 Six foot, 2 conductor shielded, with two 1/8 inch stereomini phone For additional connection information, refer to the owner smanual(s) for any component(s) connected to the The MC402 mutes the speaker outputs for approximately twoseconds when first turned It is very important that loudspeaker cables of adequate sizebe used, so that there will be no Power loss. The size isspecified in Gauge Numbers or AWG (American Wire Gauge).

10 The smaller the Gauge number, the larger the wire size:If your loudspeaker cables are 50 feet ( ) or less,use at least 14 your loudspeaker cables are 100 feet ( ) or less,use at least 12 In the event that the MC402 over heats, due to improperventilation and/or high ambient temperature, the protectioncircuits will activate. The Front Panel Power Guard LEDswill continuously indicate ON and the audio will be the MC402 has returned to a safe operatingtemperature, normal operation will The MC402 incorporates the very latest in Fully DoubleBalanced Circuitry. As a result, the Loudspeaker - NegativeConnections are above chassis ground and are not commonbetween channels.