User manual MCINTOSH MA6400

[. . . ] MA6400 INTEGRATED AMPLIFIER MA6400 INTEGRATED AMPLIFIER IMPORTANT SAFETY INSTRUCTIONS THESE INSTRUCTIONS ARE TO PROTECT YOU AND THE MclNTOSH INSTRUMENT. BE SURE TO FAMILIARIZE YOURSELF WITH THEM 1. 4. Read all instructions - Read the safety and operating instructions before operating the instrument. Retain Instructions - Retain the safety and operating instructions for future reference. [. . . ] To prevent damage caused by possible battery leakage, remove the batteries from the remote controller if it is not going to be used for an extended period of time. Never dismantle batteries or dispose of them in a fire, as they may explode. Dispose of old batteries in an approved method for proper safety. 12 Use high quality cables to Interconnect the accessory equipment used with your MA6400. This will ensure the best possible overall performance from your stereo system. Your Mclntosh dealer can advise you on the type and length of cables best suited for your specific Installation. To minimize the possibility of hum pickup or Interference, locate the cables away from AC power cords or loudspeaker cables. CD1 CONTROL Connect a Mclntosh CD control cable from the CD1 CONTROL connector to a matching connector on a Mclntosh CD player or changer. This allows you to control CD player functions with the MA6400 Hand Held Remote Controller transmitting to the MA6400 IR sensor. A CD Control cable is included with each Mclntosh CD player or changer. DATA PORTS The DATA PORTS provide data signals to be fed to compatible audio and video accessory components. This allows you to control the accessory components with their own remote controllers transmitting to the MA6400 IR sensor. The SUM DATA port is used for connecting to the optional Mclntosh Model RCT-2 Remote Control Translator. Any IR signal transmitted to the MA6400 sensor results in data signals at this port. The RCT-2 is a learning device that will allow the MA6400 to remotely control most major brands of accessory components. The VIDEO DATA port connects to the optional Mclntosh MVS-3 Audio/Video Selector. This allows the MA6400 to select and switch up to five Audio/Video signal sources and a TV monitor connected to the MVS-3. All cables connected from the DATA ports use single conductor shielded wire with 1/8" mini phone plugs. Connections are to the tip (+) and sleeve (-) of the plug. PWR AMP IN (Left and Right); PWR AMP INPUT/ EXTernal-INTemal (Switch) Set the PWR AMP INPUT switch to EXT to allow an external signal source or preamplifier to feed signals directly to the MA6400 power amplifier section through the PWR AMP IN connectors. This feature also allows you to add an additional signal processor or equalizer to the MA6400 system. When the PWR AMP INPUT switch is in the EXT setting, the MA6400 preamplifier and power amplifier sections are disconnected from each other and are completely independent. When the switch is set to the INT position, the MA6400 preamplifier section feeds signals directly to the internal power amplifier section. [. . . ] The Tape Output source impedance of the phono preamplifier section is less than 100 ohms, and will drive a load impedance of 1000 ohms or higher. LOUDNESS AMPLIFIER High level signals feed into the preamplifier past the input and mode switching, through the volume control and then into the loudness amplifier. The MA6400 uses an active loudness control circuit design. An integrated circuit operational amplifier is used with two separate feedback circuits. One feedback loop has flat frequency response, and the other loop has loudness compensation. [. . . ]