McIntosh MCC404/MCC404M User Manual

Page 6

Installation

Remove Top Cover Screws

Figure 2

Remove End Cap Screws

Figure 3

Cool Air

Warm Air

Figure 1

Cool Air

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.

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

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.