JBL AVR480 manual Surround Mode Chart

OPERATION

Surround Mode Chart

MODE FEATURES DELAY TIME RANGE

Dolby Digital	Available only with digital input sources encoded with Dolby
	Digital data. It provides up to five separate main audio channels
	and a special dedicated Low-Frequency Effects channel.

Center: 0 ms – 5 ms Initial Setting – 0 ms Surround: 0 ms – 15 ms Initial Setting – 0 ms

DTS	Available only with digital input sources encoded with DTS data.	Delay time not adjustable
	Available on special DVD, LD and audio-only discs, DTS provides
	up to five separate main audio channels and a special dedicated
	low-frequency channel.
Dolby Pro Logic II	Dolby Pro Logic II is the latest version of Dolby Laboratory’s	Movie and Pro Logic:
	benchmark surround technology that creates or decodes full-	10 ms – 25 ms,
	range, discrete left, center, right, right surround and left surround	Initial Setting – 10 ms,
	channels from matrix surround-encoded programs and conventional	Music:
	stereo sources. The Dolby Pro Logic II Movie mode is optimized for	0 ms – 15 ms,
	movie soundtracks that are recorded with matrix surround, by	Initial Setting – 0 ms
	creating true rear left, center and right signals. The Dolby Pro Logic II
	Music mode should be used with musical selections that are recorded
	with matrix surround or with normal stereo mode, creating discrete
	rear left and right signals. The Dolby Pro Logic mode provides
	decoding that is identical to the original Dolby Pro Logic processing
	for those who prefer that presentation. In this mode, the surround
	channels are fed an identical monaural signal.
Dolby 3 Stereo	Uses the information contained in a surround-encoded or two-channel	No surround channels
	stereo program to create center channel information. In addition,
	the information that is normally sent to the rear channel surround
	speakers is carefully mixed in with the front left and front right
	channels for increased realism. Use this mode when you have a
	center channel speaker but no surround speakers.
Theater	The Theater mode creates a sound field that resembles the	Delay time not adjustable
	acoustic feeling of a standard live performance theater, with
	stereo and even pure mono sources.
Hall 1	The two Hall modes create sound fields that resemble a small	Delay time not adjustable
Hall 2	(Hall 1) or medium-sized (Hall 2) concert hall, with stereo
	and even pure mono sources.

5-Channel Stereo	This mode takes advantage of multiple speakers to place a stereo signal
	at both the front and back of a room. Ideal for playing music in situations
	such as a party, it places the same signal at the front-left and surround-
	left, and at the front-right and surround-right speakers. The center channel
	is fed a summed mono mix of the in-phase material of the left and
	right channels.

No delay is available for this mode

Surround Off	This mode turns off all surround processing and presents the pure	No surround channels
(Stereo)	left and right channel presentation of two-channel stereo programs.

28