User's Manual

VII-1
Section VII – Mechanical Section
The heat sink allows the amplifiers to operate at a cooler temperature and prevents overheating,
which helps the longevity of the entire system. The heat sink has hollow fins, which help
dissipate the heat from the amplifiers faster than a conventional serrated or corrugated fin.
In addition to the cooling effects of the heat sink, within each 1000-watt power amplifier
enclosure, there are four fans that each provide 170 cubic feet per minute (CFM) of air flow (into
zero static pressure). There are two fans mounted at the front of the heat sink and two mounted
at the back end of the heat sink operated in a push-pull configuration to assist with heat
dissipation. The fans are a 24Vdc variety, so there are series dropping resistors to drop the
higher power supply voltage down to a safe level.