2.3 Required AC Mains
The WCE Series amplifiers are shipped with an appropriate line cord and plug. When possible,
use a power receptacle on a dedicated circuit; and always, make sure it will provide the correct
voltage and sufficient current. We do not recommend operating your amplifier with voltages
greater than 10% above or below the unit's rated voltage. For example, if your amplifier is rated for
220 VAC, the line voltage should not exceed 240 VAC.
CAUTION: Connect unit only to a proper supply. Use only three wire cord which is provided with
unit.
3 Operation
3.1 Precautions
Although your amplifier is protected from external faults, the following safety precautions are
recommended:
1. There are important differences among the Stereo, Bridge-Mono and Parallel-Mono operating
modes. Please refer to Section 2 for additional information.
2.
WARNING
:
Do not change the position of the stereo/mono switch unless the amplifier is
first turned off .
CAUTION: Never strap the two red output terminals together (in parallel). Never connect
either red output terminal to chassis ground.
Also, make sure the Stereo/Mono switch is set to the proper position.
3. Use care when making connections, selecting signal sources and controlling the output level.
4. Do not short the ground lead of an output cable to the input signal ground. This will form a
ground loop and may cause oscillations.
5. Do not operate the amplifier from AC mains in excess of 10% variation above or below the
selected line voltage, and only at the specified line frequency.
6. Never connect the output to a power supply output, battery or power main. Such connections
may result in electrical shock.
7. Tampering with circuitry by unqualified personnel or making unauthorized circuit changes may
be hazardous and invalidates warranty.
3.2 Power
Indicator
When illuminated, the green power indicator (the volume control) shows that the amplifier has
been turned on.
3.3
Protection
WCE Series amplifiers are protected against shorted circuits or mismatched loads, overloaded
power supplies, excessive temperature, chain destruction phenomena, input overload and
high frequency blowups. They also protect loudspeakers from input and output DC and
provide protection from turn-on/turn-off transients.
If operating conditions are unreasonable, the patented circuitry proportionally limits the drive
level to protect the output transistors, particularly in the case of elevated temperature. A
thermal switch imbedded on the heat-sink protects the output device from overload.
5
User Manual/Manual de Uso WCE 200/400
EN
