quickly. In all circumstances, an investigation should be undertaken to determine the cause of the thermal shut down. If the amplifier is not severely overloaded or its outputs shorted, and air flow is normal in and out of the amplifier, steps should be taken to provide a cooler environment for the amplifier, along with any other amplifiers in the same equipment cabinet. As a general rule, the cooler electronic equipment is operated, the longer its useful service life.
BRIDGE MODE
BRIDGE MODE is not recommended in installations where the amplifier is located at a distance from the speaker system. The
enable BRIDGE operation, should the installation require it. BRIDGE MODE operation is accomplished by placing the mode switch in the ÒBRIDGEÓ position, connecting the load across Ò+Ó terminal of Channel ÒAÓ for the positive and the Ò+Ó terminal of Channel ÒBÓ for the negative. Use Channel ÒAÓ as the input channel. The Channel ÒBÓ input is defeated in this mode. In BRIDGE MODE, the minimum recommended load impedance is 8 ohms.
SPS OPERATION
PeaveyÕs patented SPS compression system maximizes the performance of the amplifier by preventing the power amplifier from clipping under maximum power delivery conditions. This compression system is activated by a very unique circuit that senses signal conditions which might overload the amplifier, reducing the amp gain when clipping is imminent. The threshold of compression is near the clip point, so no active compression occurs within the normal dynamic range of the audio signal. By preventing clipping, this feature reduces the possibility of system distortion and possible damage to the loudspeaker. In normal theater applications, it is recommended that the SPS compression feature is placed in ENABLE.
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