Peavey PV1600, Operating Manual

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DDT®
Peavey’s patented DDT (Distortion Detection Technique) compression circuit enables the sound techni-
cian to maximize the performance of the amplifier/speaker combination by preventing the power ampli-
fier from running out of headroom (clipping). This fully automatic compression system features a unique
circuit that senses signal conditions that might overload the amplifier. It activates compression (reduces
the channel gain) when clipping is imminent. The threshold of compression is clipping itself, and no
specific threshold control is used. This technique effectively utilizes every precious watt available for
the power amplifier to reproduce the signal, while at the same time minimizing clipping and distortion.
DDT significantly reduces the potential of loudspeaker degradation and damage, and is the most effec-
tive, automatic, hands-off approach to the problem of power amplifier clipping. Since PV series power
amplifiers use a circuit breaker for overcurrent protection, the DDT compression system plays an even
more important role in continuous performance by preventing each channel from clipping and overload.
Continuous operation at clipping can cause the circuit breaker to trip, but with the DDT activated, this
problem is minimized.