Yamaha RX-A800 Owner's Manual page 93

Subwoofer
Confirms the subwoofer.
Use (Default)
Select this when subwoofer is connected. During
playback, the subwoofer will produce audio from the
LFE (low-frequency effect) channel and bass audio
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from other channels.
None
Select this when subwoofer is not connected. The
front speakers will produce audio from the LFE (low-
frequency effect) channel and bass frequency audio
from other channels.
Phase
Sets the phase of the subwoofer if the bass audio is lacking or
unclear.
Normal (Default) Does not change the subwoofer phase.
Reverse
Reverses the subwoofer phase.
Extra Bass
Allows the front channel low-frequency components to be
produced exclusively by the subwoofer, or by both the subwoofer
and the front speakers.
Off (Default) Depending on the size of the front speakers, either the
front speakers or the subwoofer produce the front
channel low-frequency components.
On The subwoofer and the front speakers produce the
front channel low-frequency components.
When "Subwoofer" is set to "None" or "Front" is set to "Small,"
"Extra Bass" is disabled.
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1 : Enabling "Extra Bass" allows both the subwoofer and the front speakers to
produce bass audio.
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2 :
If your subwoofer has a volume control or a crossover frequency control, set
the crossover frequency to maximum and the volume to half (or slightly less).
Bass Cross Over
Sets the lower limit of low-frequency component which is
produced from speakers of which the size is set to "Small."
A frequency sound which is lower than the specified frequency will
be produced from the subwoofer or the front speakers.
40Hz 110Hz
60Hz 120Hz
80Hz (Default) 160Hz
90Hz 200Hz
100Hz
Distance
Adjusts the timing at which the speakers produce audio so that
sounds from the speakers reach the listening position at the same
time.
Selecting adjustment units
kCursor B / C
Use to select the unit for distance (meters or
feet), and press kENTER.
Setting distances for each speaker
kCursor B / C
Use to select the speaker you want to configure,
and press kENTER. Then use kCursor D / E
from the speaker to your listening position.
Adjustable range 1.0 ft to 80.0 ft (0.30 m to 24.0 m)
Default setting 10.0 ft (3.00 m) (Front L/Front R/Center/Surround L/
Surround R/Surround Back L/Surround Back R/
Front Presence L/Front Presence R/Subwoofer)
Adjustment 0.2 ft (0.05 m)
increments
Setting various functions (Setup menu)
Level
Separately adjusts the volume of each speaker.
kCursor B / C
Use
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kENTER. Then use
selected speaker.
Adjustable range
Default setting
Adjustment
increments
to set the distance
SETUP
to select the desired speaker, and press
kCursor D / E
to adjust the volume for the
-10.0 dB to +10.0 dB
0.0 dB (Front L/Front R/Center/Surround L/
Surround R/Surround Back L/Surround Back R/
Front Presence L/Front Presence R/Subwoofer)
0.5 dB
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