McIntosh C39 Owners Manual

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C39 AUDIO/VIDEO CONTROL CENTER

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IMPORTANT SAFETY INSTRUCTIONS THESE INSTRUCTIONS ARE TO PROTECT YOU AND THE MclNTOSH INSTRUMENT. BE SURE TO FAMILIARIZE YOURSELF WITH THEM 1. Read all instructions - Read the safety and operating instructions before operating the instrument. 2. Retain Instructions - Retain the safety and operating instructions for future reference. 3. Heed warnings - Adhere to warnings and operating instructions. 4. Follow Instructions - Follow all operating and use instructions. WARNING: TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS IN­ STRUMENT TO RAIN OR MOISTURE. 5. Power Sources - Connect the power supply only to the type described in the operating instructions or as marked on the unit. 6. Power-Cord Protection - Route power-supply 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. 7. Ventilation - Locate the instrument for proper ventilation. For example, the instrument 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. 8. Heat - Locate the instrument away from heat sources such as radiators, heat registers, stoves, or other appliance (including amplifiers) that produce heat. 9. Wall or Cabinet Mounting - Mount the instrument in a wall or cabinet only as described in the owner's manual. 10. Water and Moisture - Do not use the instrument near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc. 11. Cleaning - Clean the instrument by dusting with a dry cloth. Clean the panel with a cloth moistened with a window cleaner. 12. Object and Liquid Entry - Do not permit objects to fall and liquids to spill into the instrument through enclosure openings. 13. Nonuse Periods - Unplug the power cord from the AC power outlet when left unused for a long period of time. 14. Damage Requiring Service - Service must be performed by qualified service personnel when: A. The power supply cord or the plug has been damaged; or B. Objects have fallen, or liquid has been spilled into the instrument; or C. The instrument has been exposed to rain; or D. The instrument does not appear to operate normally or exhibits a marked change in performance; or E. The instrument has been dropped, or the enclosure damaged. 15. Servicing - Do not attempt to service beyond that described in the operating instructions. All other service should be referred to qualified service personnel. 16. Grounding or Polarization - Do not defeat the inherent design features of the polarized plug. Non­ polarized line cord adaptors will defeat the safety provided by the polarized AC plug. 17. 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. ATTENTION: POUR PREVENIR LES CHOCS ELECTRIQUES PAS UTILISER CETTE FICHE POLARISEE AVEC UN PROLONGATEUR, UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT. Copyright 1993 © by Mcintosh Laboratory Inc. 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 constitute a risk of electric shock to persons. CAUTION: TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. 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. WARNING: 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. 2

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BALANCED jacks are present whenever the C39 Area "A" is on and operating, and are the same signals as at the Unbalanced Left Front and Right Front Outputs. Using balanced connectors and cables can reduce noise and interference by as much as 40dB. This extra noise reduction can be a significant improvement, especially if the cables are quite long. If two separate mono power amplifiers are used with the C39 to reproduce the Left and Right Front signals, balanced cables can eliminate the possibility of hum pickup. If cable lengths between the C39 and the power amplifiers are one meter or less, you may find high quality unbalanced cables to be satisfactory. Balanced Jack Pin Configuration: Pin 1. System Ground Pin 2. + Output Pin 3. - Output 19. ANT/CABLE, TV and MODULATOR ANT/CABLE: Connect a coaxial cable from a TV Antenna or Cable Output to the ANT/CABLE Coaxial connector. TV: Connect a coaxial cable from the C39 TV coaxial output to the coaxial antenna input of a TV receiver being used as a monitor. Whenever the C39 is turned OFF, the RF signals feed from the ANT/CABLE connector directly to the TV connector for normal TV reception. When the C39 is turned on, and any of the VIDEO signal sources are selected, the RF signal from the ANT/CABLE is turned off and the TV will receive audio/video signals selected by the C39. The C39 MODULATOR feeds only mono audio signals to the TV CHANNEL 3 - 4: Set this switch to select which channel on the TV you would like to receive the audio/video signals. INPUT A-B: Switch to position "A" for audio/video signals selected by the front panel LISTEN "A" selector switch, or to position "B" for audio/video signals selected by the RECORD "B" switch. In order to receive audio/video signals selected by the RECORD "B" switch, Area "B" must first be turned ON in Area "B". When Area "B" is turned off, the RF signals from the ANT/CABLE pass on through to the TV set when the INPUT A-B switch is in the "B" position. TV AUDIO: Adjust the TV AUDIO volume control for the desired audio level from the TV. 20. AC OUTLETS (Total of Three) The SWITCHED AC outlet turns on whenever the C39 is turned on in either Area "A" or Area "B", and can be used to power any audio or video accessory used in the system. AREA "A" PWR AMP outlet supplies AC to the power amplifier connected for use in the Main, or Area "A", whenever the C39 is turned on. AREA "B" PWR AMP supplies AC to the power amplifier connected to the Area "B" Outputs. The Area "B" Outputs and dedicated power amplifier can only be turned on by the C39 Remote Controller or WK-1 keypad in Area "B". To expand the number and current capability of any of the three AC outlets, a power con­ trol relay such as the Mcintosh R612 or PC-2 can be used. TOTAL CURRENT CAPACITY OF ALL C39 REAR PANEL AC OUTLETS IS 1400 WATTS 21. POWER CONTROL This connector supplies a 5 volt DC Logic 1 control signal to feed to a Power Control Input on a Mcintosh MC7106 Power Amplifier or other compatible accessory to turn its AC power on and off. 18 THE REAR PANEL AND HOW TO MAKE CONNECTIONS

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