YORKVILLE Legacy Série Manuel De L'utilisateur page 5

OPERATION
1. Plug the AC cord into a grounded outlet (120
VAC, 60 Hz in North America, 220-240 VAC, 50
Hz in export models). Switch the PS210P's
POWER switch OFF for now. Make sure that the
back of the PS210P is well clear of walls or
anything which might restrict the flow of cool air
to the heatsinks on the back panel.
2a. If you are using the MAIN, SUBMIX or
another line-level output from your mixer to
drive the PS210P, connect it to one of the INPUT
jacks with a shielded patch cord. Once again we
suggest that you employ balanced shielded patch
cables for line-level connections to the PS210P,
e.g. Yorkville model PC-6ST. Even if the mixer
does not have balanced outputs, you will obtain
some noise cancellation benefits with balanced
lines. If the mixer has stereo line-level outputs,
use two cables going to the LEFT and RIGHT
INPUT jacks. Otherwise either jack will do; there
is no need to patch over to the other INPUT jack
(the gain will be 6dB higher if you energize both
jacks, but a simple LEVEL control adjustment
easily compensates for that).
2b. Set the INPUT LEVEL push-button up in the
LINE position.
2c. If you are connecting the PS210P to the
Speaker output of a mixer/amplifier (or power
amp), or in parallel with a full-range speaker,
plug a speaker cable into one of the 1/4-inch
INPUT connectors. If the amplifier output is
stereo, connect both outputs to the PS210P's
LEFT and RIGHT INPUT jacks.
2d. Set the INPUT LEVEL push-button down in
the SPEAKER position.
3. To interconnect additional PS210P's or other
Yorkville powered speakers, plug one end of the
appropriate type of cable, i.e. shielded or
speaker-type, into the PS210P's PARALLEL THRU
jack nearest the INPUT jack which is in use.
Now connect the other end to the input of the
other unit. Be careful not to connect speaker-
level signals to the input of a powered subwoofer
which is not designed to take them. If you are
connecting an additional PS210P or other
Yorkville powered subwoofer this way, make sure
that the other powered subwoofer's push-button
is also in the SPEAKER position.
4. Switch on the POWER, and with music
playing through the system, adjust the PS210P
LEVEL control for the desired mix of subwoofer
and full-range sound. Remember that the
subwoofer volume may not increase greatly at
high settings due to the limiter. (see INTERNAL
SUBWOOFER LIMITER and AUTOMATIC
EQUALIZATION in the FEATURES sections).
5. Should the fuse blow for any reason, replace
with a similar type - 8 amp slo-blo (T4A export).
Repeated blown fuses can be a sign that the AC
line voltage is too high. Try another outlet. If this
fails to solve the problem, take the PS210P to a
qualified technician. DO NOT try to solve the
problem by wrapping metal foil around the fuse.
This can cause considerable damage to this or
any electrical product.
In case of feedback
In case of low-frequency feedback when the
mixer/amp or power amp is shut down:
The following applies where the PS210P, in
SPEAKER LEVEL mode, and full-range speakers
are interconnected to the PA amplifier and that
amplifier has been switched off, but the PS210P
left on.
With no power available at its inputs from the PA
amplifier, the PS210P can receive random signals
in its PARALLEL THRU jacks generated by the
full-range enclosure's woofers responding to
room sounds (remember that every speaker is like
a dynamic microphone). If the PS210P is
powered up and turned up high, it can see these
signals as input signals and amplify them creating
a possible feedback loop with the full-range
woofers.
Solutions: If you are in the habit of switching
your power off between sets, it is advisable to
switch the PS210P off as well, or turn down its
LEVEL control. Alternatively you might re-wire so
that the PS210P is driven by line-level signals.
Any one of these measures will avoid the above
feedback potential.
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