Arcam DV137 manual Dolby Pro Logic, Dimension, Centre Width, Panorama Mode

Dolby Pro Logic II

Dolby Pro Logic II decoding is designed to produce a 5-channel analogue output from two‑channel source material.

Set this item to one of the following. Due to the different recording methods used for movies and music, it is recommended that the correct decoding mode for your source material is used to obtain the best results.

Off	No Dolby Pro Logic decoding is performed.
Dolby	Dolby Pro Logic decoding is performed. Dolby Pro Logic decoding is a legacy mode,
Pro Logic	and we recommend using one of the Dolby Pro Logic II decoding options instead.
		English
Movie	Movie mode should be used with material marked as ‘Dolby Surround’ encoded.
Music	Music mode is for use with any stereo music recording. As the optimum decoding
	method varies according to the recording, Music mode allows user adjustment of
	the processing characteristics; information about adjusting the Music mode by
	using ‘Dimension’, ‘Centre Width’ and ‘Panorama’ controls can be found below.
Matrix	The Matrix mode is the same as the Music mode except that the directional
	enhancement logic is turned off. Matrix mode may be used to enhance mono
	signals by making them seem ‘larger’.

Dimension

(This setting can be adjusted only when Dolby Pro Logic II Music mode is selected.)

‘Dimension’ allows you to adjust gradually the soundfield either towards the front or towards the rear. If a recording is too spacious or strong from the surrounds, it can be adjusted ‘forward’ to get a better balance. Likewise, if a stereo recording is somewhat too ‘narrow’ sounding, it can be adjusted toward the rear to get a more enveloping, immersive result. We recommend ‘Dimension’ is set to 0 for normal use.

				Centre Width
				(This setting can be adjusted only when Dolby Pro Logic II Music
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����		�����		With Dolby Pro Logic II decoding, dominant centre signals come
			only from the centre speaker. If no centre speaker is present, the
			decoder splits the centre signal equally to the left and right speakers
			to create a ‘phantom’ centre image. The Centre Width control allows
			variable adjustment of the centre image so it may be heard only from
			the centre speaker; only from the left/right speakers as a phantom
			image; or from all three front speakers to varying degrees. We
			recommend ‘Centre Width’ is set to 3 for normal use.

Panorama Mode

Display	Centre spreading
	effect

0No centre spreading

120.8°

228°

336°

454°

562°

669.8°

7Phantom centre

The ‘Centre Width’ setting

for Dolby Pro Logic II

Music Mode

(This setting can be adjusted only when Dolby Pro Logic II Music mode is selected.)

Extends the front centre image to include the surround speakers for an exciting ‘wrap-around’ effect with side wall imaging.

DV137

E-17