LOW CUT Switch (12)
The LOW CUT switch is a recessed push switch used to defeat or engage the LOW CUT filter. Pushing the switch to the in position will engage the filter.
HIGH PASS/FULL RANGE OUTPUT Connector (13)
The HIGH PASS/FULL RANGE OUTPUT connector function is dependent on the setting of the corresponding MODE switch. This connector allows patching the frequencies above the crossover knob setting to a secondary amplifier. If the MODE switch is in the HIGH PASS position, the high frequency portion of the crossover will be present at the connector. If the MODE switch is in the FULL RANGE or LOW PASS position, the crossover will be bypassed and allow patching the full range signal to a secondary amplifier.
LOW PASS OUTPUT Connector (14)
The LOW PASS OUTPUT connector allows patching the frequencies below the crossover knob setting to a secondary amplifier. This output remains at low frequencies independent of the MODE switch setting.
Protection Features
The CS 2000H incorporates several circuits to protect both itself and loudspeakers under virtually any situation. Peavey has attempted to make the amplifier as foolproof as possible by making it immune to short and open circuits, mismatched loads, DC voltage, and overheating. If a channel goes into the Distortion Detection or DDT gain reduction mode, the speaker load remains connected, but clipping percentage or output power are instantly reduced. When a problem occurs that causes a channel to go into a protection mode, the TEMP LED or DC LED for that channel will glow. DC voltage on the output, excessive subsonic frequencies, or thermal overload will cause the channel’s output relay to disconnect the speaker load until the problem is corrected or the amplifier cools down.
Distortion Detection Limiting
Any time a channel is driven into hard, continuous clipping, the DDT circuit will automatically reduce the channel gain to a level just slightly into clipping, guarding the speakers against the damaging high power continuous square waves that may be produced. Situations that may activate the DDT circuit include uncontrolled feedback, oscillations, or an improper equipment setting or malfunction upstream from the amplifier. On the CS 2000H, normal program transients will not trigger DDT; only steady, excessive clipping will. The DDT LED will glow brightly and continuously when limiting occurs.
LFC Impedance Sensing
The CS 2000H features innovative circuitry that allows safe operation into any load. When an amplifier sees a load that overstresses the output stage, the Load Fault Correction circuit adjusts the channel gain to a safe level. This method of output stage protection is far superior to conventional, brute force type limiting found on other amplifiers. The LFC circuit is sonically transparent in normal use and unobtrusive when activated.
Thermal Protection
The internal fans will keep the amplifier operating well within its intended temperature range under all normal conditions. If a channel’s heat sink temperature reaches 85°C which may indicate an obstructed air supply, that channel will independently protect itself by disconnecting its load and shutting down until it has cooled. During this time, the channel’s TEMP LED will light. During this time, the ACTIVE LED will go out, the Temp and DDT LEDs will stay lit and the cooling fans will stay running at high speed.
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