Adcom GTP-870HD Selecting Surround Modes, Dolby Surround Modes, DTS Surround Modes, Dolby-D

Selecting Surround Modes

If source components are the main course in your home entertainment center, then Surround modes provide the special sauce. Surround modes process incoming audio signals and distribute them to your speakers—with each mode configured to bring out the unique flavor of your source material and send just the right mix to suit your personal taste and spe- cific speaker configuration.

•To set the default Surround mode for each input, see page 33.

•To select Surround modes on the fly, press the Mode button on the remote control or the Sur Mode button on the front panel.

Dolby Surround Modes

DOLBY-D

Decodes the Dolby Digital 5.1-channel bitstreams found on most commercial DVDs, as well as some HDTV and digital cable/satellite programs. Use if:

•Your source component is connected to the GTP- 870HD’s coaxial or optical digital audio inputs.

•Your source audio is in Dolby Digital 5.1 format.

•You have five speakers plus a subwoofer.

DOLBY-D EX

Decodes the Dolby Digital EX 7.1-channel digital bit- streams found on newer commercial DVDs. Use if:

•Your source component is connected to the GTP- 870HD’s coaxial or optical digital audio inputs.

•Your source audio is in Dolby Digital EX format.

•You have seven speakers plus a subwoofer.

DOLBY PL

Uses Dolby Pro Logic decoding to expand incoming stereo signals to 4-channel surround sound, where the surround channel is the same for both surround speakers. Use if:

•Your source component is connected to the ana- log or digital audio inputs.

•Your source audio is in 2-channel analog or digi- tal PCM format.

•You have five speakers (LF, RF, C, LS, RS).

PLII-C, PLII-M, PLII-P

Uses Dolby Pro Logic II decoding to expand incoming stereo signals to 5-channel surround sound, where the surround channel is discrete for both surround speakers. Choose “C” for cinema, “M” for music, or “P” for playing video games. Use if:

•Your source component is connected to the ana- log or digital audio inputs.

•Your source audio is in 2-channel analog or digi- tal PCM format.

•You have five speakers (LF, RF, C, LS, RS).

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PLIIX-C, PLIIX-M, PLIIX-P

Uses Dolby Pro Logic IIx decoding to expand incoming stereo signals to 6.1- or 7.1-channel surround sound. Choose “C” for cinema, “M” for music, or “P” for playing video games. Use if:

•Your source component is connected to the ana- log or digital audio inputs.

•Your source audio is in 2-channel analog or digi- tal PCM format.

•You have six or seven speakers plus a subwoof- er.

DTS Surround Modes

DTS

Decodes the DTS 6-channel digital bit- streams found on many commercial DVDs. Use if:

•Your source component is connected

to the GTP-870HD’s coaxial or optical digital au- dio inputs.

•Your source audio is in DTS format.

•You have five speakers plus a subwoofer.

DTS-ES

Decodes the DTS-ES 8-channel digital bitstreams found on newer commercial DVDs. Use if:

•Your source component is connected to the GTP- 870HD’s coaxial or optical digital audio inputs.

•Your source audio is in DTS-ES format.

•You have seven speakers plus a subwoofer.

NEO:6 C, NEO:6 M

Uses DTS Neo:6 decoding to expand incoming stereo signals from movie or music sources (e.g., VHS tapes, CDs or video games) to 6-channel surround sound. Choose “C” for cinema, or “M” for music. Use if:

•Your source component is connected to the ana- log or digital audio inputs.

•Your source audio is in 2-channel analog or digi- tal PCM format.

•You have five speakers plus a subwoofer.

GTP-870HD Owner’s Manual 57

Chapter 4 - Operations