User manual MCINTOSH MX 115

[. . . ] Warning: To reduce risk of fire or electrical shock, do not expose this equipment to rain or moisture. 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. Do not install near any heat sources such as radiators, heat ducts or other equipment that produce heat. [. . . ] You can also return it to the McIntosh Laboratory Service Repair department. For assistance on factory repair return procedure, contact the McIntosh Repair Department at: McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-3515 Fax: 607-723-1917 Copyright 2001 © by McIntosh Laboratory, Inc. (+) POSITIVE SPEAKER OUTPUT 3 Introduction Now you can take advantage of traditional McIntosh standards of excellence in the MCC302 Power Amplifier. Two 150 watt high current output channels will drive any high quality loudspeaker system to its ultimate performance. The MCC302 reproduction is sonically transparent and absolutely accurate. The McIntosh Sound is "The Sound of the Music Itself. " · Thermal Protection with Multi-Speed Cooling Fans Built-in thermal protection circuits guard against overheating which could shorten the normal long life expectancy of your McIntosh Power Amplifier. Cooling fan speed is controlled by temperature sensors attached to the interior of the extruded aluminum cooling tunnel. When needed, the fans will automatically switch on, and speed is increased as needed for additional cooling. Fully Discrete Design The MCC302 has a fully complimentary double balanced amplifier design and is identical to that found in McIntosh's leading home amplifiers. Balanced Inputs with Pass Through The Balanced Inputs cancel out interference noise that is produced by other sources in the vehicle and can be directly connected to the bridged speaker output of any head unit. The MCC302 provides two line level outputs, for the convenience of connecting multi-amplifier systems. The openings in the fan housings and heat tunnel vents can allow internal components to be damaged by exposure to water, chemicals or any form of road dust or debris. Removing the Glass Panel To access the MCC302 Controls, remove the glass panel by removing the four hex bolts with the supplied 3/32" hex key. Attach the supplied suction cup to the top center of the glass panel and carefully raise it high enough to put your hand under. Temporarily place the removed glass panel in a safe place, remove the suction cup and save it for future use. Removing the End Caps To access the MCC302 Connecting Terminal Blocks, remove the Glass Panel first (the above step) and then remove the Phillips Screws holding the End Caps on both sides of the amplifier and lift the end caps off. See figure 3. Warm Air Cool Air Figure 1 Cool Air Warm Air Remove Top Cover Screws Figure 2 Remove Top Cover Screws Remove End Cap Screws Figure 3 Remove End Cap Screws 6 Side Panel Cooling and Connections Connect to the Negative (-) vehicle battery terminal Cooling Fan Air Intake Connect to the positve (+) vehicle battery terminal with an inline fuse Cooling Fan Air Intake SUBWOOFER OUTPUTS supply a two channel summed output OUTPUTs from the INPUT Signal Source to connect to another Power Amplifier Receives the Amplifier Turn-ON signal from a McIntosh Control Center INPUTs for audio cables from a signal source Connector for optional SUBwoofer REMOTE Volume CONTROL OUTPUT Connections for loudspeakers Controls the Power Guard Circuit when connected to certain McIntosh Control Centers 7 How to Connect for Two Channels How to Connect for Two Channels 1. Connect a wire from the Control Center Amp On to the MCC302 ON Connector on the right side of the amplifier. Note: All cables should be connected to the amplifier before connecting the DC power cables to the battery. Note: The Subwoofer Outputs are line-level outputs and summed from all the Input Channels. Connect a wire from a McIntosh Control Center with Power Guard to the MCC302 PG Connector on the right side of the amplifier. Connect cables (up to 12AWG) from four separate loudspeakers connected in a series/parallel combination, to the Amplifier's Channels 1 and 2 BRIDGE McIntosh Control Center 6. Connect the MCC302 to the vehicle battery terminals using size 4AWG (maximum) cables. Note: It is advisable to place an inline fuse of a suitable size as close as possible to the battery. Power Guard Amp ON McIntosh Power Amplifier (Upper Range) Left Front Right Front McIntosh External Subwoofer Rotary Control (-) (+) (-) (+) - Vehicle + Battery Fuse (-) (+) (-) (+) 9 Top Panel Controls, Display and Switches CROSSOVER Filter Switch and Control select the low roll-off frequency, high roll-off frequency or flat frequency response EQUALIZER Controls select the Frequency and the Level of Boost or Cut at the Center Frequencies for Channels 1 and 2 SOURCE Switch selects either CHs 1, 2, or 1 - 2 SUBwoofer (Sum of CHs 1, 2) MODE Switch selects STEREO or BRIDGE mode of operation POWER GUARD LED lights when the Power Guard Circuit activates for Amplifier Channels 1 or 2 SENSITIVITY Individual Input Sensitivity Controls for Channels 1 and 2 10 How to Operate Introduction The McIntosh MCC302 is a highly versatile amplifier that can be configured in many ways. [. . . ] Refer to figure 8. Figure 7 Crossover Set the CROSSOVER Switch to the OUT position since both channels are operating at full frequency range. Refer to figure 4. Operating in Bridged Subwoofer Mode Input Source Set the SOURCE Switch to the 1-2 (SUB) position. Output Mode Set the MODE Switch to the BRIDGED Position to operate in the Bridged Subwoofer Mode. Refer to figure 8. Figure 8 Crossover Set the CROSSOVER Switch to the LP Position. [. . . ]