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Cooling Modification, Ameritron AL-80BXCE Amplifier
800
W CW
Modification of Cooling The cooling system of the AL-80B is very quit but the airflow is low...especially considering the backpressure.The best cooling system would be a chimney cooling, from the bottom up. A chimney cooling is not possible but a new fan to increase the airflow. Therefore I exchange the fan typ from Papst 4800z to Papst 4606z. In the followig diagrams you can compare the performance of the both fans. Attention: Not only the airflow increase but also the the sound. If you want a quit fan...do not do the modification. The data specifications shows the performance for 60Hz. We have in Germany 50Hz, that means reduced performance: 2650rpm and 152m3/h airflow. Sound pressure level at 50Hz: 37 dB(A)
Original Fan New Fan |