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PROTECTION CIRCUITS
Models 600/300 have two built-in overload thermal protection for abnormal operation. One is
installed with heatsink (operating temp. 90°C) and the other is installed in the power transformer
(operating tern. 135°C.) These protectors are auto reset type. If either or both protectors go off,
check ventilation and speaker connections.
The current limiter circuit of output transistors is especially designed for models 600/300. If any
load will be connected to the output, the current limiter circuit controls the current of which do
not exceed the SAFETY OPERATION AREA of output transistors in proportion to the load. This
circuit activates below 2.7Q load.
Let the latest space-age computer technology of FOSTEX protect your sound system and offer
you the superb sonic qualities needed to command any recording/monitoring situation in the
studio.
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