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P L E A S E R E A D T H E S E I M P O R TA N T I N S T R U C T I O N S
B E F O R E U S I N G T H E E Q U A L I S E R .
SAFETY INSTRUCTIONS
To reduce the risk of electric shock the user should not
remove the cover. All operating and safety instructions
should be followed. The unit should be kept clear of
water, fluids and moisture and not be operated in damp
conditions. The unit should be operated in a well
ventilated environment. The unit should be kept away
from excessive heat sources such as radiators and if
racked with other power amplifiers there should be a
free air flow to vent out the heat produced (check with
dealer). This graphic equaliser must only be used with
the Wharfedale external power unit provided.This
power unit provides a 19 volt ac supply and its output
cable must be plugged into the matching socket on the
rear panel of the equaliser. This must be done
BEFORE the power unit is plugged into the mains
power supply. The power cable should be disconnected
during prolonged non usage.The user should not
attempt to service the unit or do anything to the unit in
any way except those things described in this manual.
For service and repair your dealer should be contacted.
This unit complies with relevant safety regulations.
POWER NOTICE FOR SAFETY
All British and European countries have a nominal
230v mains power supply. In practice this varies
between 220v and 240v. In the USA the main power
supply is 115v and in Japan 100v. The power unit is
factory set to the correct voltage and this can be
checked by referring to the label on the unit. If the
equaliser is used in a country having a different
supply voltage then a new power unit will be
required and you should consult your dealer. There
are no user serviceable parts within the power unit
or the equaliser and high voltages are present. DO
NOT remove the covers! Ensure that all the audio
connections are made before the mains supply is
connected and switched on.
1. Power switch, when depressed the power is
switched on.
2. The Power LED illuminates when the power is on.
3. Equaliser sliders (WPG- 331). 31 bands of
equaliser adjustment are provided at ISO 1/3 rd octave
frequencies.
4. Equaliser sliders (WPG- 315). 15 bands of
equaliser adjustment are provided for each channel at
ISO 2/3 rd octave frequencies.
5. The Bypass switch bypasses the complete unit by
linking the inputs directly to the outputs.
6. The Level switch enables the range of “boosting” or
“cutting” to be ±6dB or ±12dB. “Boosting” a frequency
band is achieved by moving a slider upwards towards
the “+” end and this increases the level of the chosen
frequency. “Cutting” a frequency band is achieved by
moving a slider downwards towards the “-” end and this
decreases the level of the chosen frequency.
7. The level rotary pot adjusts the sensitivity of the
equalisers input stage by ±12dB. This allows an
accurate level matching with a large range of sources.
The maximum output is +22dBm.
8. The signal LED indicates the presence of a signal
from an external source.
9. The peak LED indicates an output level that is
reaching or exc22dB level and so causing
overload distortion. The signal level input then needs to
be reduced.
10. The HPF rotary pot (only on the WPG-331) is a
high pass filter that allows for a specific roll-off
frequency to be selected. Useful for tuning in at certain
frequency points and removing unwanted low
frequency signals.
11. Phase normal/reverse switch (only on the WPG-
331)
The switch inverts input signal by 180°. This enables
correct phase matching.
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