WH 2 Series User Manual
subwoofer output, use the connection shown in Figure 2. You
WH 2 Sub Bass Loudspeaker
will need a stereo RCA phono cable. Only the specified
The WH 2 powered sub-bass unit uses a custom designed
outputs should be used - a Tape output is NOT suitable.
long throw 250mm bass motor and a large 100 Watt power
PRE OUT - MAIN IN CONNECTIONS
amplifier.
If you use a stereo pre and power amplifier, or an amplifier
where the pre and main amplifier can be separated, connect
the subwoofer as shown in Figure 3. You will need two stereo
screened RCA phono cables. Remove the Pre-Main links on
your amplifier. Connect one RCA cable between the Pre Out
Sockets on the amplifier and the Line Level Inputs on the
POWER CONNECTIONS
subwoofer. Connect a second cable from the Line Level
This unit is set to the mains voltage marked on the amplifier
Outputs of the subwoofer to the Main In sockets of the
panel. Before connecting check that this voltage is correct for
amplifier. Do not mix up the Right and Left Channels!
your mains supply.
USING TWO SUBWOOFERS
230 volt units: 220 - 240 volts
The figures illustrate some suggestions for wiring two
115 volt units: 110 - 120 volts
subwoofers. If you need further information consult your
If you move to an area with a different mains supply, please
dealer for advice.
consult your Wharfedale dealer to arrange the conversion of
POSITIONING THE UNIT
this product.
Although the unit may be placed almost anywhere in the
room, even behind the sofa or the TV set, we recommend that
it be placed in front of the listener and as central to the
listening position as possible. The subwoofer should not be
CAUTION
(115 volt products only)
operated within 450mm of a television set as the drive unit
TO PREVENT ELECTRIC SHOCK MATCH THE WIDE BLADE OF
magnet may distort the picture.
THE PLUG TO THE WIDE SLOT OF THE POWER OUTLET AND
We suggest you position the subwoofer about 20cm (8
FULLY INSERT THE PLUG.
inches) from the wall. Placing the unit close to the wall will
SPEAKER LEVEL CONNECTIONS
enhance the bass; placing it across the corner of the room
will increase the bass further, possibly at the expense of
If your amplifier does not have a line level subwoofer output,
clarity. Experiment with a variety of locations and sources
you will need to feed the subwoofer from the Front
before making a final decision.
loudspeakers. For this you will need two extra twin core
cables.
As the subwoofer is a powered unit there should be a mains
outlet within easy reach.
Ensure your Front loudspeakers are correctly connected.
The Speaker Level
The bass ports are mounted at the rear of the subwoofer and
should not be obstructed by placing the unit against soft
connectors are spring
terminals located on the
furnishings. Do not place the subwoofer close to surfaces or
control panel. Press the
objects that may rattle. The floor under the subwoofer should
lever at the side of the
be sound with no loose floorboards, etc.
terminal and insert the
SETTING UP
cable. Release the lever
Set the subwoofer power switch to OFF. Turn the system
and the wire is held firm.
Volume Control to minimum. Re-check all system connections.
Make sure that the
Now connect the subwoofer power lead to the mains and
terminal grips the bare
switch on the power.
Set the subwoofer volume control to the
wire.
mid position (12o'clock) before proceeding.
There are two methods of connecting the subwoofer.
VARIABLE CROSSOVER
This control should initially be set to 150
A
Using one of the additional twin core cables, connect the
Hz when the subwoofer is used with small bookshelf speakers
Left Speaker Terminals on the sub bass unit to the Front Left
and to 80 Hz when used with large floor standing speakers.
speaker terminals on the amplifier. Connect the Red (+)
PHASE SWITCH The Phase switch should be initially set to 0°.
speaker terminal on the amplifier to the Red (+) terminal
on the subwoofer. Connect the Black (-) speaker terminal on
FINE TUNING
the amplifier to the Black (-) terminal on the subwoofer. Now
Switch on the subwoofer power switch and check that the
connect the Right Speaker terminals on the subwoofer to the
power indicator on the front of the cabinet glows. Now switch
Front Right speaker terminals on the amplifier.
on the system.
B
Alternatively you may connect the subwoofer to the Front
Play a programme with extended bass and set the system
speakers instead of to the amplifier.
volume to a reasonable level. Adjust the subwoofer volume
LINE LEVEL CONNECTIONS
control to produce the desired level of bass. Do not overdo
things!
If your A V amplifier has a dedicated subwoofer line output
use this connection. Ensure you have a quality single
If the bass is indistinct or lacks depth, the Phase control may
screened RCA phono cable. Connect this from the subwoofer
need adjustment. Listen carefully to a programme with
Output of the AV unit to the left Line Level Input socket on
extended bass and switch the Phase switch in and out.
the subwoofer. Ensure that the plugs are fully inserted and
Choose the setting which produces the most bass at the
firmly seated.
listening position.
STEREO CONNECTIONS
The Crossover control can now be fine tuned by adjusting the
If your amplifier has a preamplifier output or a stereo
bass output for optimum performance.
When installing the unit allow a space of at least 450mm
between the subwoofer and the TV otherwise the colours on
the screen may be disturbed. If this occurs, switch the TV set
off and switch it on after 15 minutes. The internal circuits of
the TV set should restore normal colour.
Although the power cord can be left plugged in, it should be
unplugged if the subwoofer is not going to be used for a long
period.
