Yamaha RX-V671 Owner's Manual page 76

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Extended Surround (EXTD Surround)
Selects how to play back 5.1- to 7.1-channel sources when surround back speakers
are used.
Settings
Automatically selects the most suitable decoder if a flag for
reproducing surround back channel is present, and reproduces the
Auto (Auto) (default) signals in 6.1- or 7.1-channel. When the DTS or DTS-HD signal is
input, the unit reproduces the signal in 7.1-channel regardless of a flag
for surround back channel.
Always reproduces signals in 7.1-channel using the Dolby Pro Logic
PLIIx Movie
IIx Movie decoder. This setting is available only when two surround
( PLIIxMo)
back speakers are connected.
Always reproduces signals in 6.1- or 7.1-channel using the Dolby Pro
PLIIx Music
Logic IIx Music decoder. This setting is available only when one or two
( PLIIxMu)
surround back speakers are connected.
Automatically selects the most suitable decoder, and reproduces
EX/ES (EX/ES)
signals in 6.1-channel.
Off (Off) Always reproduces signals in original channels.
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Volume Trim (Volume Trim)
Corrects volume differences between input sources. If you are bothered by volume
differences when switching between input sources, use this function to correct it.
• This setting is applied separately to each input source.
Setting range
-6.0dB ~ +6.0dB (0.5dB steps)
Default
0.0dB
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Enhancer (Enhancer)
Enables/disables Compressed Music Enhancer (p.46).
• This setting is applied separately to each input source.
Settings
Off (Off) Disables Compressed Music Enhancer.
On (On) Enables Compressed Music Enhancer.
Default
TUNER, DOCK, (network sources), USB: On (On)
Others: Off (Off)
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