Thermal Protection
KXT amplifiers feature a thermally efficient dual heat sink design and dual speed, dual
fan cooling. They are designed to operate in the kind of relatively high environmental
temperatures found in some venues and we feel that they perform extremely well in such
hostile conditions. However, because extremely high environmental temperatures are
always a hazard to high power amplifiers, all KXT amplifiers also feature a Thermal
Protection Relay. If the amplifier becomes too hot, it will temporarily go into a 'standby'
mode where the audio circuitry (but not the fans!) is switched off. This gives the circuitry
time to cool down. If this happens the amber LEDs marked 'Protect' (found on the front
panel) will illuminate. If this happens you should turn the volume controls to zero
immediately and wait. When the Protect LEDs stop being illuminated you can gradually
return the volume controls to the desired listening level. Under such circumstances it is
advisable to return the volume controls to a slightly lower listening level than that set
prior to the engagement of the Thermal Protection Relay. The more power output you
demand from your amplifier, the higher the internal operating temperature is liable to
be… so a lower listening level will decrease the chances of the Relay engaging
once more.
Short Circuit Protection
The KXT Amplifier range also features Short Circuit Protection that temporarily
disables the unit in the event of an electrical short circuit within your PA system.
Short circuits are usually caused by damaged cables but can, on rare occasions, also be
caused by excessive atmospheric moisture. Excessive moisture is caused either by
direct exposure to rain or by operation within an extremely humid atmosphere
(everything in the venue will be dripping wet) and if experienced the remedy is to cease
to use the unit and to leave it to dry out naturally. If damaged cables are to blame,
turning the unit off, waiting for a few minutes and then turning it back on will not remedy
the situation and you will need to use the services of a professional to trace the fault.
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