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

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Adcom GTP-870HD user manual Selecting Surround Modes, Dolby Surround Modes, DTS Surround Modes
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GTP-870HD specifications

The Adcom GTP-870HD is a versatile home theater processor and amplifier, designed to deliver exceptional sound quality and a range of advanced features for audio and video enthusiasts.

At its core, the GTP-870HD supports high-definition audio and video formats, making it a centerpiece for modern home entertainment systems. With its capability to process various surround sound formats, including Dolby Digital, DTS, and advanced multichannel audio formats, it ensures a truly immersive listening experience. The processor is equipped to handle high-definition audio streams, allowing users to enjoy music with clarity and depth that exceeds standard listening experiences.

One of the standout features of the GTP-870HD is its ability to decode high-definition audio formats such as Dolby TrueHD and DTS-HD Master Audio. This is complemented by built-in advanced digital signal processing (DSP), enabling fine-tuning of audio settings to fit the unique acoustics of any room. This attention to detail ensures that every sound is reproduced accurately, whether it’s a subtle dialogue or the crescendo of a cinematic score.

In terms of connections, the GTP-870HD is equipped with an array of inputs and outputs. It includes multiple HDMI ports, allowing for seamless integration with high-definition sources like Blu-ray players, gaming consoles, and streaming devices. The HDMI interfaces support 4K and 3D video pass-through, ensuring compatibility with the latest video technologies. Additionally, the unit features analog inputs, allowing for traditional sources to be connected, making it a flexible choice for varied setups.

The GTP-870HD also boasts advanced user controls with an intuitive on-screen display, enabling easy navigation through settings and configurations. This user-friendly interface enhances the overall experience, making it accessible even for those who may not be as technologically inclined.

Furthermore, the inclusion of advanced room calibration technology optimizes audio playback based on room characteristics, ensuring that sound is balanced and immersive, regardless of the environment.

Overall, the Adcom GTP-870HD is designed for audiophiles and home theater enthusiasts who demand high-quality performance and advanced features. With its robust set of specifications and capabilities, it represents an excellent value for those looking to enhance their home entertainment systems. With the GTP-870HD, users can expect an enriched audio experience that truly brings movies, music, and games to life.
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