Crown Audio CE2000TX User Manual

NOTE: For detailed information about 
these Crown amplifier features, please 
consult the Crown Amplifier Application 
Guide, available on the Crown website 
at www.crownaudio.com.

CE 2000TX amplifiers are protected against 
shorted, open or mismatched loads; over-
loaded power supplies; excessive temperature; 
chain destruction phenomena; input overload 
damage; and high-frequency blowups. They 
also protect loudspeakers from input/output 
DC, large or dangerous DC offsets and turn-on/
turn-off transients.

Bias servo translates the output heatsink tem-
perature to controlled bias current. This pre-
vents thermal runaway and holds the amplifier’s 
notch distortion to a minimum.

The amplifier will light the Fault LED on the 
front panel if the amplifier output stage stops 
operating.  If this happens, take the unit to an 
authorized service center.

An amplifier's slew rate only needs to be large 
enough to deliver the maximum voltage at the 
highest required frequency. Higher slew rates 
actually let the amplifier reproduce undesirable 
frequencies. By design, the CE 2000TX ampli-
fier has  a controlled slew rate to put a fre-
quency limit on the highest frequencies that 
they reproduce. This limit occurs well above 20 
kHz, so there is no audible effect on perfor-
mance.

This approach protects the amplifier from radio 
frequencies and can even protect some sensi-
tive loads (including some tweeters).

This system temporarily removes output drive 
to protect the amplifier and its loads. Drive pro-
tection can be activated in two situations. First, 
if dangerous subsonic frequencies or direct 
current (DC) is detected in the amplifier's out-
put, drive protection will activate. The amplifier 
resumes normal operation when it no longer 
detects dangerous output. Activating this pro-
tection is very unlikely, but improper source 
signals like infrasonic square waves or a 
severely clipped input signal can activate this 
system.

Second, the amplifier's fault protection system 
puts the affected channel into drive protection 
mode in rare situations where heavy common-
mode current is detected in its output. The 
amplifier should never output heavy common-
mode current unless its circuitry is damaged. 
Activating drive protection helps prevent further 
damage.

A full-time compressor is in-line with the sig-
nal, preventing damage to your speakers. 

A front panel push button is used to reset the 
circuit breaker that protects the power supply.

The speed of the cooling fan is controlled by 
the transformer temperature and the heatsink 
temperature.

Crown optional SST (System Solution Topolo-
gies) modules were specially designed to 
improve the fidelity and versatility of your audio 
system. They feature a variety of professional 
signal routing and filtering capabilities, with 
active crossovers that allow the audio signal to 
be split and sent to auxiliary amplifiers. Your 
amplifier may have come with an SST module 
already factory-installed, or your choice of SST 
modules can be easily added to the amplifier by 
any authorized Crown Service Center.

For information on wiring and configuration of 
amplifiers equipped with an optional Crown 
SST crossover module, please refer to the SST 
Crossover Reference Manual included in your 
literature package.

Refer to the following descriptions for an over-
view of availabe Crown SST crossover mod-
ules. Crown plans to release additional 
accessory plug-in modules offering a range of 
advanced features and capabilities. Watch for 
new releases.