ONKYO tx-nr646 User Manual

Step 3:   Playing Back

ranges when set to "Off".

 

● It cannot be set if the listening mode is Pure Audio 

(European, Australian and Asian models) or Direct.

Music Optimizer: Improve the quality of the 

compressed audio. Playback sound of lossy 

compressed files such as MP3 will be improved. The 

setting can be separately set to each input selector.

 

● The setting is effective in the signals of 48 kHz or 

less. The setting is not effective in the bitstream 

signals.

 

● It cannot be set if the listening mode is Pure Audio 

(European, Australian and Asian models) or Direct.

Late Night: Make small sounds to be easily heard. It 

is useful when you need to reduce the volume while 

watching a movie late night. You can enjoy the effect 

only with Dolby Digital, Dolby Digital Plus, Dolby 

TrueHD, and DTS sources.

 

● Turning the unit to standby mode will set the setting 

to "Off". In case of Dolby TrueHD, the setting will be 

set to "Auto".

 

● The setting cannot be used in the following cases.

 

– If "Loudness Management" is set to "Off" when 

playing Dolby Digital Plus or Dolby TrueHD.

 

– When the input signal is DTS and "Dialog 

Control" is other than 0 dB.

Cinema Filter: Adjust the soundtrack that was 

processed to enhance its treble, in order to make it 

suitable for home theater.

 

● This function can be used in the following listening 

modes: Dolby Digital, Dolby Digital Plus, Dolby 

TrueHD, Multichannel, DTS, DTS-ES, DTS 96/24, 

DTS-HD High Resolution Audio, DTS-HD Master 

Audio, DTS Express, DSD.

Center Spread: Adjust the width of the sound field of 

the front channel when playing in the Dolby Surround 

listening mode.  

To spread the width of the sound field to the left and 

right, set to "On". To concentrate sound in the center, set 

to "Off".

 

● This setting may be "Off" depending on the settings 

in speakers.

Dialog Control: You can increase the dialog portion of 

the audio in 1 dB steps up to 6 dB so that you can make 

dialog easier to hear over background noise.

 

● This setting is unavailable for content other than 

DTS:X.

 

● This setting may not be available for selection with 

some content.

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 HDMI: Select the HDMI OUT jack to be used for output.



 Information: 

Audio: Displays the audio input source, format, number 

of channels, sampling frequency, listening mode, and 

number of output channels.
Video: Displays information such as the video input 

source, resolution, color space, color depth, 3D 

information, Aspect and output.
Tuner: Displays information such as the band, 

frequency, and preset number. This is displayed only 

when "TUNER" is selected as the input source.

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It is possible to enhance or moderate the bass and treble 

of front speakers. Press TONE on the main unit several 

times to select the desired setting from "Bass", "Treble" and 

"Phase Matching Bass", and adjust with +/-.

 

● It cannot be set if the listening mode is Pure Audio 

(European, Australian and Asian models) or Direct.

"Bass": Allows you to enhance or moderate the bass.

"Treble": Allows you to enhance or moderate the treble.

"Phase Matching Bass": Allows you to keep the clear 

midrange and effectively enhance the bass.

Press DISPLAY on the remote controller several times to 

switch the display of the main unit in order of:

Input source & volume

Listening mode

Signal format

Sampling frequency

Input signal resolution

 

● If "Dolby D 5.1" is displayed in Signal format, the 

Dolby Digital 5.1 ch signals are being input. When 

listening to AM/FM radio, the band, frequency and 

preset number are displayed.

It is possible to play audio and video from different sources. 

For example, you can play audio from the CD player and 

video from the BD/DVD player. In this case, press BD/DVD 

and then CD. Then start playback on the BD/DVD player 

and CD player. This function is effective when an input with 

audio only has been selected (CD, NET, BLUETOOTH, 

TUNER or PHONO in the initial setting).()

¼

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When NET or BLUETOOTH is selected, press MODE on the remote 

controller after pressing NET or BLUETOOTH on the remote controller.