Installation, Amplifier Ventilation | McIntosh MCC404/MCC404M

Installation

It is recommended that a professional who is skilled in all aspects of installation and operation install the MCC404/ MCC404M and any associated mobile audio equipment.

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Figure1

Amplifier Ventilation

Always provide adequate ventilation for the MCC404/ MCC404M. The amplifier requires an adequate airflow into the cooling fans, which are located on the left side of the amplifier. The warm air exits the amplifier through vents on the heatsinks. See figure 1. Be sure to provide at least 1-1/2 inches clearance in front of the cooling fans and 1 inch clearance at the sides of the heatsinks.

The cooling fans are controlled by temperature sensors, attached to the interior of the tunnel. The fans are normally off. If the program material contains sustained loud pas- sages demanding high power, the fans will turn-on to in- crease cooling. If cooling is still not sufficient, additional heating will shut down the amplifier internal power supply completely and the Power Guard LEDs will light. The fans will continue to run and once normal temperatures are re- stored, operation will resume.

The amplifier can be mounted vertically or horizontally and may be located under a seat if adequate clearance is available. The preferred installation method is to mount the amplifier directly to the vehicle main frame using the hard- ware supplied with the amplifier.

It is not recommended that the amplifier be mounted

under the hood or in a location where it will be directly ex- posed to the elements. 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

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Figure2	RemoveTopCoverScrews
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road dust or debris.

Removing the Glass Panel

To access the MCC404/MCC404M Controls, remove the glass panel by removing the four hex bolts with the sup- plied 3/32” hex key. See figure 2. Attach the supplied suc- tion 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 MCC404/MCC404M 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 fig- ure 3.

Figure3

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MCC404/MCC404M specifications

The McIntosh MCC404 and MCC404M amplifiers are a testament to the brand's dedication to producing high-fidelity audio equipment that meets the demands of even the most discerning audiophiles. With their robust design and cutting-edge technologies, these amplifiers offer exceptional sound quality and performance, making them ideal for both home audio systems and professional setups.

Both the MCC404 and the MCC404M feature a powerful quad amplifier design, which allows them to deliver an impressive output of 400 watts per channel into 8 ohms, making them capable of driving a wide range of speakers with ease. This output is not only powerful but also highly controlled, providing crystal-clear sound reproduction across the frequency spectrum. The incorporation of McIntosh’s Power Guard technology ensures that distortion is minimized, safeguarding your speakers while delivering a pristine audio experience.

One of the standout features of these amplifiers is their advanced thermal management system. McIntosh has integrated a sophisticated cooling design that prevents overheating, ensuring the amplifiers function optimally, even during extended listening sessions or when driving demanding loudspeakers. This technology is crucial for maintaining the longevity and reliability of the units.

The build quality of the MCC404 and MCC404M is exemplary, reflecting McIntosh's commitment to craftsmanship. Each unit showcases the iconic McIntosh blue watt meters, which not only serve a functional purpose by providing real-time power output readings but also enhance the aesthetic appeal of the equipment. The chassis is constructed with high-grade materials, ensuring durability while minimizing resonance for cleaner sound delivery.

Included in the design are multiple input options, making integration into various audio setups convenient. The amplifiers feature both balanced and unbalanced inputs, accommodating a range of source components. Additionally, the MCC404M variant includes McIntosh’s unique Quad Balanced output stage, providing enhanced sound quality and reduced noise, further elevating the listening experience.

In conclusion, the McIntosh MCC404 and MCC404M amplifiers stand out in the audiophile market with their superior output, advanced technologies, and supreme build quality. Whether used in a home theater environment or a professional studio, these amplifiers deliver an unparalleled audio experience, ensuring that every note and nuance is heard as intended. McIntosh has once again proven its dedication to excellence, making these amplifiers a worthy investment for anyone serious about high-quality sound.