MAINS OPERATION & RESULTING TEMPERATURE
The following tables allow determining power supply and cabling requirements. The values of the
column „1/8 max. Output“ are relevant for „normal“ operation. These values are based on operating the
power ampli er with VDE-noise at 1/8 of the maximum output power, which approximately equates the
load of the power ampli er being operated with a music signal at maximum volume possible, without
RESULTING TEMPERATURE INSIDE THE POWER AMPLIFIER
The power drawn from the mains network is converted into acoustic output power to feed the connected
loudspeaker systems & heat. The difference between drawn power and dispensed power is called
leakage power or dissipation (Pd). The amount of heat resulting from power dissipation might remain
inside of a rack-shelf and needs to be diverted using appropriate measures. The following table provides
auxiliary means for calculating the temperatures inside of a rack-shelf system/cabinet and the ventilation
efforts necessary. The column “Pd” lists the leakage power in relation to different operational states. The
column “BTU/hr” lists the dispensed heat amount per hour
For approximation; when operating the appliance at 120V mains the stated current values need to be doubled.
(1) modulated with sine signal
(2) modulated with VDE-noise
(3) 1BTU = 1055.06J = 1055.06Ws
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