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Details of 6.1-channel Surround Sound

A system with six speakers and one subwoofer, each reproducing a separate audio signal. In addition to 5.1-channel surround sound, there is an additional rear speakers positioned right behind the listener.

Details...

6.1 Channel Surround (analog matrixed: Dolby Pro Logic IIx)

Extracts 6 audio channels and 1 low-frequency channel from either a specially encoded two-channel or a stereo source:

• Two channels for speakers at the front - left (L) and right (R).
• One channel for speaker at the center - center (C).
• Two channels for surround speakers at the sides - side left (LS) and side right (RS).
• One channel for surround speakers at the rear - back surround channel (BS).
• One low-frequency channel to drive a sub-woofer.
• Describes the Dolby Pro Logic IIx matrixed surround system. Source media is the same as both Dolby Pro Logic and Dolby Pro Logic II.
• Surround Sound speaker placement: (8 speakers in total) surround sound speaker placement is different for both music and movie content.

For music, speakers placement is best as shown in the diagram, tweeters should be pointed closest to the listening position.

For movie surround, the front speakers should be placed at the edges of the screen, toed in to face the central listening location, and the tweeters should be ear height. The center speaker should be placed behind the screen (when using projection) or over or under a TV, and as close to ear height as possible. Side channel speakers should be placed high on side walls, to the left and right of the listening position, equidistant from the front speakers and the rear speakers. Rear channel speakers should be placed high on side walls, slightly behind the listening position, and should have a normal high-quality monopolar construction.

6.1 Channel Surround (digital partially discrete: Dolby Digital EX)

Delivers 5 audio channels, 1 extracted audio channel and 1 LFE channel from a 6 channel source:

• Two discrete channels for speakers at the front - left (L) and right (R).
• One discrete channel for speaker at the center - center (C).
• Two channels for surround speakers at the sides - left surround (LS) and right surround (RS). The discrete LS and RS channels are dematrixed into LS, RS, and back surround (BS).
• One channel for surround speakers at the rear - back surround channel (BS).
• One low-frequency effects channel (LFE).
• Describes the Dolby Digital EX discrete/matrixed hybrid Surround system. Source media, usually DVD is often branded with "Dolby Digital EX" logo. This format is used in some theatrical motion picture films.
• Surround Sound speaker placement: (8 speaker channels in total) Surround Sound speaker placement is different for both music and movie content.

For music, speaker placement is unknown

For movie surround, the front speakers should be placed at the edges of the screen, toed in to face the central listening location, and the tweeters should be ear height. The center speaker should be placed behind the screen (when using projection) or over or under a TV, and as close to ear height as possible. Side channel speakers should be placed high on side walls, to the left and right of the listening position, equidistant from the front speakers and the rear speakers. Rear channel speakers should be placed high on side walls, slightly behind the listening position, and should have a normal high-quality monopolar construction.

6.1 Channel Surround (digital discrete: DTS-ES)

Delivers 6 discrete audio channels and 1 LFE channel from a 7 channel source:

• Two channels for speakers at the front - left (L) and right (R).
• One channel for speaker at the center - center (C).
• Two channels for surround speakers at the sides - side left (LS) and side right (RS).
• One channel for surround speakers at the rear - back surround channel (BS).
• One low-frequency effects channel (LFE).
• Describes the DTS ES discrete Surround system. Source media, usually DVD is often branded with "DTS ES" logo. In theatrical motion picture film, this format does not exist, and the name "DTS-ES" refers to the above hybrid format used for Dolby Digital EX.
• Surround Sound speaker placement: (8 speaker channels in total) Surround Sound speaker placement is different for both music and movie content.

For music, speakers placement is unknown

For movie surround, the front speakers should be placed at the edges of the screen, toed in to face the central listening location, and the tweeters should be ear height. The center speaker should be placed behind the screen (when using projection) or over or under a TV, and as close to ear height as possible. Side channel speakers should be placed high on side walls, to the left and right of the listening position, equidistant from the front speakers and the rear speakers. Rear channel speakers should be placed high on side walls, slightly behind the listening position, and should have a normal high-quality monopolar construction.

See also

Surround sound