installation 2
cooling and ventilation
LT / ST amplifiers use a forced air cooling system to maintain a low,even operating tem- perature.
Air is drawn in by a DC fan on the rear panel, flows through the cooling fins and then exhausts through the front panel vent.
Heat sink temperature is monitored and controls the variable speed fan. Fan speed increases only as required, keeping fan noise to a minimum.
If the heat sink surpasses its maximum allowed temperature, the thermal protection circuit will activate and open the output relays allowing the amplifier to cool to a safe temperature. To continue using the amp, it must be reset by turning the power off and then turning it back on again.
Thermal protect activation only occurs under extreme thermal conditions and is not part of normal operation.
powering
a
Make certain that there is enough space around the front and rear of the amplifier to allow the heated air to escape. When mounting in a rack, try to avoid using doors or covers on the front and rear of the enclosure; the exhaust air must not be impeded
suggestion
In racks with closed backs allow at least one stan-
Unless otherwise specified when ordered, LT / ST amplifiers are supplied factory set to following voltage options :
Option 1 US domestic nominal 120Vac 60Hz for rated power output (safe operating range 100 - 132Vac )
Option 2 export models nominal 230Vac 50Hz for rated power output (safe operating range 200 - 264Vac )
note
Due to the nature of the switching power supply in the ST, 50 - 60Hz operation is acceptable for both options.
maintenance
LT / ST amplifiers require no routine maintenance.
If the amplifier is used in an extremely dusty or smoky environment , the unit should be periodically blown free ( using compressed air ) of any foreign matter that may have built up inside the unit.
Users will not need to make any adjustments to the amplifier during its lifetime.There are no
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