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Also take care to exhaust the heated air away from the front panel intakes, so as not to recirculate and reheat the same air over and over again. In a rack system, make sure there is a significant source of fresh air to the rack. This can be achieved with air conditioning vents to the top of the rack, an open back that is well ventilated, or rack panel fans/vents. In the case of rack panel fans/vents, the cooling will be most effective when the amplifier(s) are located as far away from the fans/