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 the 250-watt power amplifier enclosure,
there are two fans that each provide 170 cubic feet per minute (CFM) of air flow (into zero static
pressure). There is one fan mounted at the front of the heat sink and one mounted at the back end
of the heat sink. The fans are mounted at each end to produce the best cooling for the system and
are operating 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.
TAV-250