JBL DVD280 Optical Digital Audio Connection Notes, For Your Reference, Dolby Digital and DTS

DIGITAL AUDIO

Optical Digital Audio

Connection Notes

•Remove the dust protection cap from the optical digital audio output and connect the cable firmly so that the configurations of both the cable and the connector match.

•Keep the dust protection cap and always reattach the cap when not using the connector.

Audio Output From the Unit’s

Optical/Coaxial Digital Audio

Output Connector

Disc: Sound		Optical/coaxial
	recording	digital audio
	format:	output:
DVD	Dolby	Dolby Digital
	Digital	bitstream
		(2–5.1ch) or
		PCM (2ch,
		48kHz, 16-bit)††
	Linear PCM	Linear PCM
	(48/96kHz,	(2ch) (48/96kHz,
	16/20/24-bit)	16/20/24-bit)
	DTS	Bitstream or no
		output††
	MPEG (2.0)	MPEG
		bitstream (2ch)
		or linear PCM
		(2ch, 48kHz)
VCD	MPEG-1	Linear PCM††
	CD-DA
CD	Linear PCM	Linear PCM
		(44.1kHz
		sampling)
	MP3	Linear PCM
	(MPEG-1	(44.1– 48kHz,
	Audio	depending on
	Layer 3)	source, if digital
		output format
		selected as
		“Original”).
		(48kHz if digital
		output format
		selected as
		“PCM”)
	WMA	Linear PCM
	(Windows	(32–48kHz)
	Media
	Audio)

††Digital output format must be selected as “Original” or “PCM” in Audio submenu (see page 25).

For Your Reference:

•Dolby Digital is a digital sound com- pression technique developed by the Dolby Laboratories Licensing Corporation. Supporting 5.1-channel surround sound, as well as stereo (2-channel) sound, this technique enables a large quantity of sound data to be efficiently recorded

on a disc.

•DTS is another digital audio technol- ogy developed by Digital Theater Systems, Inc. It supports 5.1 and 6.1 digital surround sound, depending on the specific disc, thanks to a sophisticated encoding system. Some receivers and processors also feature DTS-ES®and DTS Neo:6® matrix decoders that may be used with DTS 5.1 discs to derive the sur- round back channel.

•Linear PCM is a signal recording format used in CDs. While CDs are recorded in 44.1kHz/16-bit, DVDs are recorded in 48kHz/16-bit, up to 96kHz/24-bit.

•If you have a Dolby Pro Logic Surround decoder connected to the DVD280’s analog audio out connec- tors, thanks to the “Downmix” func- tion of the DVD280, you will obtain the full benefit of Pro Logic from the same DVD movies that provide full 5.1-channel Dolby Digital sound- tracks, as well as from titles encoded with Dolby Surround.

•The DVD280 is designed to digitally output 96kHz PCM audio with a 96kHz sampling rate. The 96kHz indication will appear in the Disc Information on-screen display. See page 37. However, some 96kHz DVDs may include copy protection codes that do not permit digital out- put. For full 96kHz fidelity from these discs, use the analog outputs of the DVD280. If your surround processor converter does not support 96kHz PCM audio, you must use the DVD280 analog outputs for full 96kHz fidelity with these discs.

•When connecting an amplifier (with an optical/coaxial digital input) that does not contain a Dolby Digital or DTS decoder, be sure to select PCM as the initial setting in the Digital Output menu (see page 18). Otherwise, any attempt to play DVDs may cause such a high level of

noise that it may be harmful to your ears and damage your speakers.

•CDs can be played as they would normally be played.

NOTE: Some first-generation DTS decoders that do not support DVD- DTS interface may not work properly with the DVD/CD player.

Dolby Digital and DTS

Both Dolby Digital and DTS are audio formats used to record 5.1-channel audio signals onto the digital track of film. Both of these formats provide six separate channels: left, right, center, left rear, right rear and common sub- woofer.

The latest discs may include the 6.1- channel formats, such as Dolby Digital EX and DTS-ES®Discrete. These formats add an additional surround back channel behind the listener to create an even more realistic sense of envelopment.

Remember that Dolby Digital or DTS will only play 5.1- or 6.1-channel sound if you’ve connected the optical or coaxial output of the DVD280 to

a DTS or Dolby Digital receiver or decoder (see page 19) and if the disc was recorded in the Dolby Digital or DTS format.

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