Electro-Voice CP3000S - Manual (Page 4)

4 5
Congratulations! With buying an Electro-Voice CP-Series power amplifier you have chosen a state-of-
the-art appliance that employs most advanced technology.
CP-Series power amps combine outstanding audio performance, highest reliability and operational
safety.
DESCRIPTION
The audio performance of CP-Series power amps are simply extraordinary. The new switchmode power
supply technology, completely designed from scratch and the consistent use of Class-H technology
provide extensive headroom far above the stated nominal output and conspicuous reduction in leakage
power at the same time.
The employed switching power supply combines the headroom-advantage of a transformer power
amplifier with low weight of a pulsed power supply unit resulting in an improved performance-to-weight
ratio. Special attention had been given to high efficiency and interference immunity already in the
designing stage with the result that trouble-free operation of CP-Series power amps is possible even in
EMV-critical environments.
The power amplification stages of the CP3000S follow Class-H technology design, i.e. the power
amp provides extremely fast, signal-dependent operating voltage switching, which, results in doubling
the regular supply voltage when needed. Compared to Class-AB power amps, Class-H power amps
generate by far less power dissipation at identical output. Consequently, reduced leakage power or
dissipation is synonymous to less waste heat. In other words: energy is used more efficiently! As a result,
installing Class-H power amps within rack shelf systems is possible with less space between appliances.
In addition to that and despite offering identical output, power consumption is a lot less than in Class-AB
operation.
Being protected against thermal and electrical overload, short circuit and the occurrence of HF/DC at
the outputs, Electro-Voice CP-SERIES power amps fulfill even the most demanding requirements of
Pro-Audio touring applications. Back-EMF-Protection eliminates the risk of the output transistors being
damaged by electrical energy back-feed. The power outputs are switched via relay with a time delay
during soft-start and an inrush current limiter additionally prevents mains fuses from blowing.
Mechanical construction and workmanship also comply with the highest precision manufacturing
standards. The robust chassis is extremely rigid which makes it especially suitable for wearing
touring applications. Two three-speed high performance fans (off/slow/fast) guarantee outstanding
thermal stability at absolute low running noise. Front-to-rear ventilation allows trouble-free operation
even in smaller amp-racks. The electronically balanced inputs are carried out via XLR-type
connectors. Direct-Outs for through connecting the audio signal are also provided via XLRM-type
connectors. Input Routing allows selecting DUAL (stereo) or PARALLEL (monaural) operation
mode. By means of the separate BRIDGED OUT-connector and a Bridged Mode-switch, switching
to “Mono Bridged” operation is truly uncomplicated as well. The recessed mounted dB-scaled level
controls ensure reliable protection against mechanical damage. These particularly precise, secure
to operate detent-potentiometers are located on the front panel. CP-Series power amps provide the
opportunity for retrofitting an internal analogue signal processor board with x-over and filter functions.
The easily readable LED display provides a quick overview of the power amp’s current operational
status. The power outputs CHANNEL A, CHANNEL B and BRIDGED OUT are carried out as extremely
durable SPEAKON-type connectors. Also located on the rear panel is a Ground-lift switch, which, when
needed, helps eliminating ground-noise loops by separating the power amp’s enclosure from the circuit
ground. In normal operation, all CP-Series power amps are capable of driving loads as low as 2ohms. In
Mono-Bridged mode the allowable minimum load is 4ohms.
This owner’s manual outlines and explains several other features of your CP-SERIES power amplifier.
Please, make sure to carefully read all of it and mind the instructions.