Crown ce-2000tx Manual De Usuario

Connect your amplifier to the AC mains power 
source (power outlet) with the supplied AC power 
cordset. First, connect the IEC end of the cordset to 
the IEC connector on the amplifier; then, plug the 
other end of the cordset to the AC mains. 

Amplifiers don’t create energy. The AC mains volt-
age and current must be sufficient to deliver the 
power you expect. You must operate your amplifier 
from an AC mains power source with not more than 
10% variation above or below the amplifier’s speci-
fied line voltage and within the specfied frequency 
requirements (indicated on the amplifier’s back 
panel label). If you are unsure of the output voltage 
of your AC mains, please consult your electrician.

Use the following procedure when first turning on 
your amplifier:

1. Turn down the level of your audio source.
2. Turn down the level controls of the amplifier.
3. Turn on the “Power” switch. The Power indicator-
should glow. 
4. Turn up the level of your audio source to an opti-
mum level.
5. Turn up the Level controls on the amplifier until 
the desired loudness or power level is achieved.
6. Turn down the level of your audio source to its 
normal range.

If you ever need to make any wiring or installation 
changes, don’t forget to disconnect the power cord.

For help with determining your system’s optimum 
gain structure (signal levels) please refer to the 
Crown Amplifier Application Guide, available online 
at www.crownaudio.com.

A two-position Input Sensitivity switch is located 
on the back panel near the input connectors 
(Figure 3.15). Your amplifier is shipped from the 
factory with this switch set to the 1.4V position. 
At this setting, a 1.4V input signal will drive the 
amplifier to full power into an 8 ohm load when 
the level controls are turned to maximum. This 
setting works best when the amplifier is being 
driven by equipment with a +4 dBu output — an 
output level at which most professional equip-
ment operates.

If required, the Input Sensitivity switch can be 
moved to the 26 dB position, so that the ampli-
fier provides a fixed voltage gain of 20 (or 26 dB: 
1 volt in, 20 volts out). This setting works best 
with output levels of +10 dBu (2.5 volts RMS) or 
more. Some brands of DJ mixers, in particular, 
have output levels in this range.

Selecting the correct sensitivity will allow your 
equipment to operate at its optimum level and 
improve the signal-to-noise of the system.

Your amplifier is protected from internal and 
external faults, but you should still take the fol-
lowing precautions for optimum performance 
and safety:

1.

Before use, your amplifier first must be con-
figured for proper operation, including input 
and output wiring hookup. Improper wiring 
can result in serious operating difficulties. 
For information on wiring and configura-
tion, please consult the Setup section of this 
manual or, for advanced setup techniques, 
consult Crown’s Amplifier Application 
Guide available online at www.crownau-
dio.com.

2.

Use care when making connections, select-

ing signal sources and controlling the out-
put level. The load you save may be your 
own!

3.

Do not short the ground lead of an output 
cable to the input signal ground. This may 
form a ground loop and cause oscillations.

5.

Tampering with the circuitry, or making 

unauthorized circuit changes may be haz-
ardous and invalidates all agency listings.

6.

Do not operate the amplifier with the red 
Clip LEDs constantly flashing. 

7.

Do not overdrive the mixer, which will cause 

clipped signal to be sent to the amplifier. 
Such signals will be reproduced with 
extreme accuracy, and loudspeaker damage 
may result. 

8.

Do not operate the amplifier with less than 

the rated load impedance. Due to the ampli-
fier’s output protection, such a configuration 
may result in premature clipping and 
speaker damage. 

Sensitivity Switch