11
THERMAL CONDITIONS
The ISP Sub Series is capable of producing 1000 watts at full power. This generates heat that
must be dissipated in order to maintain reliability and insure the amplifier components stay
within their operating temperature specs. To accomplish this the amplifier is mounted onto a
heatsink that is exposed in the front port of the cabinet. Airflow is forced through the fins via
the air pressure from the speaker. It is recommended that the fins have at least 6 inches of
clearance from any obstruction to allow proper ventilation to occur.
In addition the amplifiers are thermally protected internally via a thermal switch, which will
attenuate the signal 40db when the temperature exceeds a certain point. When the
temperature drops below a certain point, full signal will be restored. Tests have shown under
extreme conditions that cycling will occur (40 sec. ON, 20 sec. OFF).
Under extreme conditions, such as when ambient temperatures are too high (hot rooms,
extreme outdoor temperatures) it is recommended to use a fan on the fins to reduce the
cycling affects.
Summary of Contents for XMAX 115 Active Series
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