Onkyo HT-R791 instruction manual En-74

If the input signal format is set to “PCM” or “DTS”. 57 Set it to “Off”.

■Only the front speakers produce sound

When the Stereo or Mono listening mode is selected,	38
only the front speakers and subwoofer produce
sound.
Check the Speaker Configuration.	50

■Only the center speaker produces sound

If you use the Dolby Pro Logic IIx Movie, Dolby Pro — Logic IIx Music, or Dolby Pro Logic IIx Game listening mode with a mono source, such as an AM radio station or mono TV program, the sound is concentrated in the center speaker.

Make sure the speakers are configured correctly. 50

■The surround speakers produce no sound

When the T-D (Theater-Dimensional), Stereo or	—
Mono listening mode is selected, the surround
speakers produce no sound.
Depending on the source and current listening mode,	35
not much sound may be produced by the surround
speakers. Try selecting another listening mode.
Make sure the speakers are configured correctly.	50

■The center speaker produces no sound

When the Stereo or Mono listening mode is selected, — the center speaker produces no sound.

Make sure the speakers are configured correctly. 50

■The front high and surround back speakers produce no sound

Depending on the current listening mode, no sound 36 may be produced by the front high and surround back speakers. Select another listening mode.

Depending on the sources, the sound produced by the — front high and surround back speakers may be weak.

Make sure the speakers are configured correctly. 50

When Powered Zone 2 is used, playback in the main room is reduced to 5.1channels and the front high and surround back speakers produce no sound.

■The subwoofer produces no sound

When you play source material that contains no	—
information in the LFE channel, the subwoofer
produces no sound.
Make sure the speakers are configured correctly.	50

■There’s no sound with a certain signal format

Check the digital audio output setting on the	—
connected device. On some game consoles, such as
those that support DVD, the default setting is off.
With some DVD-Video discs, you need to select an	—
audio output format from a menu.
Depending on the input signal, some listening modes	35-39
cannot be selected.

■ Can’t get 6.1/7.1 playback

If no surround back speakers and front high speakers — are connected, or the Zone 2 speakers are being used, 6.1/7.1 playback is not possible.

Depending on the number of connected speakers, it is 35-39not always possible to select all of the listening

modes.

■The speaker volume cannot be set as required

Check to see if a maximum volume has been set.	59
If the volume level of each individual speaker has	32, 51

been adjusted to high positive values, then the maximum master volume possible may be reduced. Note that the individual speaker volume levels are set automatically after the Audyssey 2EQ® Room Correction and Speaker Setup has been performed.

■ Noise can be heard

Using cable ties to bundle audio cables with power	—
cords, speaker cables, and the like may degrade the
audio performance, so refrain from doing it.

En-74

Appendix

An audio cable may be picking up interference. Try — repositioning your cables.

■The Late Night function doesn’t work

Make sure the source material is Dolby Digital,	45
Dolby Digital Plus, and Dolby TrueHD.
Make sure that the “TrueHD Loudness	53
Management” setting is not set to “Off”. The Late
Night function doesn’t work when this setting is
disabled.

■ About DTS signals

When DTS program material ends and the DTS	—
bitstream stops, the AV receiver remains in DTS
listening mode and the dts indicator remains on. This
is to prevent noise when you use the pause, fast
forward, or fast reverse function on your player. If
you switch your player from DTS to PCM, you may
not hear any sound because the AV receiver does not
switch formats immediately. In such case, you should
stop your player for about three seconds and then
resume playback.

With some CD and LD players, you won’t be able to — playback DTS material properly even though your player is connected to a digital input on the AV receiver. This is usually because the DTS bitstream

has been processed (e.g., output level, sampling rate, or frequency response changed) and the AV receiver doesn’t recognize it as a genuine DTS signal. In such cases, you may hear noise.

Playing DTS program material, using the pause, fast — forward, or fast reverse function on your player may produce a short audible noise. This is not a malfunction.

■The beginning of audio received by an HDMI IN can’t be heard

Since it takes longer to identify the format of an	—
HDMI signal than it does for other digital audio
signals, audio output may not start immediately.