Thermal Limiter Compressor (TLC): 
There are thermistors that monitor each of the amplifier channel’s heatsinks as 
well as one that monitors the heatsink for the secondary diodes (±Vcc) of the 
power supply.  The TLC adjusts the gain at a rate of 1.25dB/°C at temperatures 
greater than 75°C.  The TLC takes the worst case of the three thermistor readings 
and adjusts both channels at the same rate. 
compressor threshold
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70 80 90 100
Temp (C )
Gain reduction (dB)
Series1
 
Bridge Mode: