Crown ce 4000 - Fault Monitoring

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Reference Manual
Reference Manual
CE 4000 The amp with an Attitude!CE 4000 The amp with an Attitude!
Figure 5.3
Block Diagram
for Crown’s
SST-SBSC
SST-SBSC (Summed Bass Stereo Crossover) Module
Crown’s advanced SST-SBSC module offers ten user-speci-
fied crossover frequencies, CD horn EQ and summed sub-
bass output for driving subs (see Figure 5.3 for block diagram).
The SST-SBSC offers the following features:
• Stereo biamp.
• 12-, 18- and 24-dB (Linkwitz-Riley) / octave filters.
• CD horn equalization.
• Mono summing of sub-bass output for driving subs.
Crown plans to release additional accessory plug-in modules
offering a range of advanced features and capabilities. Watch
for new releases.
Fault Monitoring
The Fault (RJ11) jack, which looks like a telephone plug, is
located on the back of your CE 4000 amplifier. It gives you an
easy way to remotely monitor the amplifier’s fault status. To set
up a circuit that will cause an LED to light whenever a fault
status occurs, you can simply use the suggested circuit shown
in Figure 5.4.
When using this circuit, the LED will glow whenever the ampli-
fier is in one of four states: a channel’s heatsink has reached its
temperature limit, the transformer has reached its temperature
limit, the amplifier has just been turned on and is in its turn-on-
delay mode, or the amplifier is turned off.