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Reference Manual
Reference Manual
CE 4000 The amp with an Attitude!CE 4000 The amp with an Attitude!
Clip: A red LED for each channel which turns on when distor-
tion becomes audible in the amplifier output.
Fault: Normally off, this red indicator will blink under five differ-
ent conditions:
1. When the amplifier is first powered up, until the unit is
ready for operation.
2. If the heatsinks reach a temperature above normal work-
ing limits.
3. If the transformer thermal protection circuit is activated.
4. If amplifier output wires develop a short-circuit.
5. Should the amplifier output stage become non-opera-
tional.
This circuit may be monitored remotely by plugging a simple
switching circuit using an LED or other signaling device into
the back-panel RJ11 (Fault) jack. Under some conditions, the
output of the amplifier will be muted.
Power: A green LED that turns on when the amplifier has
been turned on and has power.
Input/Output
Input Connector (standard module): One Neutrik
®
Combo
connector for each channel which features a balanced ¼-inch
(6.35-mm) phone jack and a 3-pin female XLR connector, in
parallel with a barrier strip termination.
Input Stage: Input is electronically balanced and employs pre-
cision 1% resistors.
Input Impedance: Nominally 20 k ohms, balanced. Nominally
10 k ohms, unbalanced.
Input Sensitivity: 0.775 volts or 1.4 volts for standard 1-kHz
power, or fixed 26-dB gain.
Output Connectors:
Three options available: Four (4) Neutrik
®
Speakon
®
NL4MP (mates with NL4FC) output connectors; (2)
5-way binding posts in parallel with two (2) Speakon
®
connec-
tors; or barrier strip outputs in parallel with two (2) 5-way bind-
ing posts.
Output Signal,
Stereo:
Unbalanced, two-channel;
Bridge-Mono:
Balanced, single-channel. Channel 1
controls are
active; Channel 2 should be turned down.
Wiring Configuration: (see Figure: 7.3).
Protection
CE 4000 amplifiers are protected against shorted, open or mis-
matched loads; overloaded power supplies; excessive tem-
perature, chain destruction phenomena, input overload
damage and high-frequency blowups. They also protect loud-
speakers from input/output DC, large or dangerous DC offsets
and turn-on/turn-off transients.
Construction
Rugged steel chassis is formed into a durable package any
stagehand could love. Coated with environmentally friendly
powder for long life and ease of maintenance.
Cooling: Proportional-speed fan-on-demand.
Dimensions: EIA Standard 19-inch rack mount width (EIA RS-
310-B), 5.25-inch (13.34-cm) height and 16.25-inch (36.56-
cm) depth with additional 1-inch rear rack ears.
Weight: The CE 4000 net weight is 33.3 pounds (15.1 kg).
Shipping weight is 39.3 pounds.
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