OPPO Digital DV-987HD ユーザーズマニュアル

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Speaker Setup Page 

Down-mix

Front Speaker

Center Speaker

Rear Speaker

Subwoofer

Channel Delay

Stereo

Large

Small

Small

Off

--- Speaker Setup Page ---

 

 

1.  Down-mix Mode: To set the audio down-mix mode for converting multi-channel audio into two-

channel output.  This setting affects the analog and HDMI audio outputs.  The options are: 

 

•  Lt/Rt – Dolby Pro Logic II Left Total/Right Total.  This mode is intended for use with two-

channel Dolby Pro Logic II receivers.  The center and surround channels are mixed into the 
two front channels according to the Lt/Rt matrix.  A Dolby Pro Logic II receiver will decode 
the two-channel audio into surround audio. 

•  Stereo - This mode down-mixes decoded multi-channel (5.1ch) audio to 2-channel stereo 

output.  For original stereo content the output will still be stereo.  For original multi-channel 
content the surround and center channels will be mixed with the left and right front 
channels.  Recommended for use with TV sets or stereo receiver/amplifiers. 

•  V. Surround - Virtual Surround.  This mode creates a virtual surround effect from stereo or 

multi-channel audio contents. 

•  5.1CH – This mode enables 5.1ch decoded audio output.  The number of actual output 

channels depends on the disc. 

 
2.  Front Speaker: To set the sound filtering control for the front speakers.  The options are: 
 

•  Large – Choose if the front speakers are large.  Bass frequencies are passed to the front 

speakers. 

•  Small – Choose if the front speakers are small.  Bass frequencies are not passed to the 

front speakers to reduce possible distortion. 

 
3.  Center Speaker: To set the sound filtering control for the center speaker.  The options are: 
 

•  Large – Choose if the center speaker is large.  Bass frequencies are passed to the center 

speaker. 

•  Small – Choose if the center speaker is small.  Bass frequencies are not passed to the 

center speaker to reduce possible distortion. 

•  Off – Choose if there is no center speaker. 

 
4.  Rear Speaker: To set the sound filtering control for the rear speakers.  The options are: 
 

•  Large – Choose if the rear surround speakers are large.  Bass frequencies are passed to 

the rear speakers. 

•  Small – Choose if the rear surround speakers are small.  Bass frequencies are not passed 

to the rear speakers to reduce possible distortion. 

•  Off – Choose if there are no rear speakers. 

 
5.  Subwoofer: To enable/disable the subwoofer output.  The options are: 
 

•  On – Subwoofer output is enabled. 

•  Off – Subwoofer output is disabled.