English
DV79
E-17
Stereo+Sub
This setting is relevant to 2-channel source material only (such as CDs). It controls whether the
low frequency information is redirected to the subwoofer, or not. This item can be changed only if
a subwoofer is speci ed as present in the system.
None No redirection of low-frequency information occurs; all the audio is sent to the
Front speakers.
Crossover Low-frequency information is redirected to the subwoofer, with the remaining
(higher-frequency) information sent to the Front speakers.
Duplicate All the audio is sent to the Front speakers. In addition, the low-frequency
information is duplicated to the subwoofer.
Crossover Frequency
This setting de nes the frequency at which bass redirection begins. Frequencies below this level
are redirected from ‘small’ speakers to the Fronts or to the subwoofer; frequencies above this
level are not redirected. The redirection frequency is the same for all the speakers in a system.
The optimum crossover frequency depends on the characteristics of your speaker set-up, and is
best determined by experimentation. We suggest you start at 100Hz.
Delay set-up
The delay set-up menu page allows two different type of delay to be con gured:
those due to speaker positioning and those due to video post-processing.
Speaker positioning
The relative positioning of speakers within a room (particularly a large room)
may mean that sound from some speakers arrives at the listener later than
sound from others. By altering the delay settings for the different speakers,
this difference in arrival time can be reduced or eliminated.
When setting the delay, it should be imagined that the listener is sitting in a
circle of the speakers; the delay indicates the distance of the speaker from the
listener.
Measurement Units
Your DV79 allows you to choose the measurement units that you feel most
comfortable with: metres or feet.
Delays
Delays for the front, centre and surround speakers can be set using the associated sliders. A delay
may be necessary for a speaker set if those speakers are further away from the listener than the
others – specifying the different speaker distances will cause a slight delay to be added to the output
of the closest speakers so that the sound from all the speakers will arrive at the listener at the same
time.
Video post-processing (lip-sync.)
Delay (NTSC/PAL)
Modern displays and video scalers often employ digital video processing that can introduce a
signi cant video delay. The ‘Delay’ menu items allow correction of this effect by delaying the audio
soundtrack up to 150 milli seconds. The amount of correction required in a given system is best
determined by experimentation.
�
If the interlaced video outputs of the DV79 are in use and the display is converting the signal to
progressive scan then we recommend a delay of 50–80ms, depending upon the display.
�
If the progressive video output of the DV79 is in use, the player corrects automatically for its own
processing delays and it is unlikely that additional delay will be necessary. Therefore, start by
setting these items to 0ms (no delay).
Trim set-up
The relative sensitivity (volume) of different speakers can lead to some speakers
sounding disproportionately loud or quiet, relative to others in the system. The
trims setting of your DV79 can help to address this inbalance.
Test Noise
Setting this item to ‘On’ causes pink noise to be generated from the speaker
indicated by the on-screen highlight. The noise is at the volume indicated by
the slider for the speaker. Setting this to ‘On’ may be useful in ensuring that the
relative volume for each speaker is the same.
Note that this setting is set automatically to ‘Off’ on exit from this menu page.
Trims
Trims for all the speakers can be set using the associated sliders. These settings
are useful if the speakers have different sensitivities (and so have different volumes
for the same input levels). The trims can be set in 1dB steps.
Subwoofer/Stereo+Sub trims
Both the ‘Subwoofer’ and the ‘Stereo+Sub’ trims control the subwoofer trim setting. ‘Subwoofer’ is the
trim used when multi-channel material is being played; ‘Stereo+Sub’ is the subwoofer trim used with
2-channel material.
