ProScan PS20112 Owner's Manual page 49

The speaker switch on the back of the TV changes how the
TV's amplifier drives the speakers, allowing you to use the
external speakers two ways:
To enhance the sound from the TV's speakers, place the
speakers in the front of the viewing area (usually beside
the TV), and slide the speaker switch to EXT.This provides
full power to the external speakers for a "fuller" sound and
turns off the TV's internal speakers.
SPEAKER
EXT _ INl%EX'1"
SURR
To obtain a "surround sound" effect, place the external
speakers in the rear of the viewing area, and slide the
speaker switch to INT/EXT S URR.This provides full power to
the TV's internal speakers for the front sound and a
surround signal to the rear speakers. Do not use SPK060
speakers for this type of setup. They are designed to be
used close to the TV.
SPEAKER
EXT _ IN'I_F.XT
SURR
Helpful Hints: External speakers placed next to the TV will sound
better the higher quolity they are. Very efficient small "bookshelf" or
"compact" speakers will give good results for surround-sound use.
Surround effect can often be improved by experimenting with rear
speaker placement.
Surround-encoded movies (broadcast or tape) give the best surround
effect, but regular stereo and mono programs will also benefit.
ConnectingSpeakers to Back of Amplifier or Receiver
If you connect an amplifier or receiver to your TV as
described on page 43, connect the speakers to the
amplifier/receiver instead of the TV. Sound from the TV
will then come through the amplifier/receiver and the TV's
internal speakers. If desired, you can turn off the TV's
internal speakers with the SPEAKERS ON/OFF function
described on page 9.
The diagram below shows iaow to connect external
speakers to the speaker terrainals on the back of a typical
amplifier/receiver. Check the owner's manual for your
amplifier/receiver if its speaker terminals look different
than those shown below.
1st Set of Speakers
Connect ':o A Terminals
Receiver
(Optional)
2nd Set of Speakers
Connecl to B Terminals
Notes: After connecting speaker wire, pull it gently and check that it is
connected securely to its terminal.,;.
Do not allow the wire core to protrude from its terminal or contact other
wires or terminals. If the cores of _:wowires touch each other, damage to
components could result.
Important: When connecting the speaker wire, make sure you connect
the (+) terminal on the amplifier or receiver to the (+) terminal on the
speaker. One side of the speaker wire is usually marked with a white
stripe to help you connect (+) to (--) and (-) to (-). If the (+) and (-)
terminals are not matched properly, the speakers will not be "in phase" :
causing reduction in low frequencLes (bass).
Caution: Do not connect external
speakers to more than one audio
source at a time. You can connect a
set of speakers to either the TV or the
amplifier but not to both at the same
time. If you connect the same
speakers to both the TV and the
amplifier (or to more than one set of
terminals), you will probably damage
your equipment.
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