Delay set-up, Trim set-up | Arcam DV79 specification

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 specified 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 defines 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.

No sound from the centre/rear speakers? Ensure that the following are correct:

n A multi-channel source is being played;

n The ‘Audio’ item is set to ‘Bitstream/6 Ch.’;

n The connection between the DV79 and your audio device is made correctly – if using multi- channel analogue output, check that the cables have not been swapped.

English

Delay set-up

The delay set-up menu page allows two different type of delay to be configured:

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 significant video delay. The ‘Delay’ menu items allow correction of this effect by delaying the audio soundtrack up to 150 milliseconds. 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.

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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.

DV79

E-17