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72
En
•
SP
AB
– Sound is output from speaker
system A (up to 5 channels, depending on
the source), the two speakers in speaker
system B, and the subwoofer.
Multichannel sources (heard through
speaker system A) are downmixed for
stereo output from speaker system B.
Bi-amping your front speakers
VSX-915 model only
Bi-amping is when you connect the high
frequency driver and low frequency driver of
your speakers to different amplifiers (in this
case, to both front and surround back
terminals) for better crossover performance.
Your speakers must be bi-ampable to do this
(having separate terminals for high and low)
and the sound improvement will depend on the
kind of speakers you’re using.
1 Connect your speakers as shown below.
This illustration below shows the connections
for bi-amping your front left speaker. Hook up
your front right speaker in the same way.
Since both front and surround back speaker
terminals output the same audio, it doesn’t
matter which set (front or surround back) is
powering which part (
Hi
or
Low
) of the
speaker.
• Make sure that the
+
/
–
connections are
properly inserted.
2 Select the
SB BIAMP
setting from the ‘
SB.
SYSTEM’
menu.
See
Surround back speaker setting
on page 46
to specify how you’re using the surround back
speaker terminals.
Caution
• Most speakers with both
Hi
and
Low
terminals have two metal plates that
connect the
Hi
to the
Low
terminals. These
must be removed when you are bi-amping
the speakers or you could severely damage
the amplifier. See your speaker manual for
more information.
• If your speakers have a removable
crossover network, make sure you do not
remove it for bi-amping. Doing so may
damage your speakers.
Bi-wiring your speakers
VSX-915 model only
The reasons for bi-wiring are basically the
same as bi-amping, but additionally,
interference effects within the wire could be
reduced, producing better sound. Again, to do
this your speakers must be bi-wireable (that is
they must have separate terminals for the high
and low frequencies). When bi-wiring, make
sure you’ve selected
SB NORM.
or
SB 2ND Z
in
Surround back speaker setting
on page 46.
• To bi-wire a speaker, connect two speaker
cords to the speaker terminal on the receiver.
Caution
• Make sure you use a parallel (not series,
which are fairly uncommon) connection
when bi-wiring your speakers.
• Don't connect different speakers from the
same terminal in this way.
FRONT
R L RL
CENTE R SURROUND
R L
SURROUND BACK
S
P
E
A
K
E
R
S
A B
Hi
Lo
Front left
speaker
VSX_815-915.book.fm 72 ページ ２００５年３月１日 火曜日 午前１０時２２分