ately limited in dynamic range and frequency bandwidth for the surround channel and thus only requires speakers of far lesser capabilities compared to the front channels. Dolby Digital, however, is a full range system with two independent surround channels and with dynamics equal to that of the front channels. For this reason it is advis- able to choose loudspeakers which are similar in power handling and performance capability to those of the front channels. If you are using only one pair of surround speak- ers, make sure to connect them to the Surround Rear outputs. If you choose to install another pair of surround speakers, locate them behind your listening position, and connect them to the Surround Back outputs. Surround Back channels add to the spaciousness and coherence of the sound field, but the Surround Rear channels must be present for the desired effect.

Many film soundtracks rely heavily on very low frequency sound effects which are difficult for normal or smaller hi-fi speakers to reproduce. To faithfully reproduce these low frequencies you can use a specially designed low frequency loudspeaker with its own built-in amplifier (“active subwoofer”). Because it is difficult to hear which direction very low frequencies are coming from, you only normally need one subwoofer and this can be placed virtually anywhere in the room. Dolby Digital uses a dedi- cated Low Frequency Effects (LFE) channel. If a subwoofer has been selected, the LFE channel will be fed to the sub- woofer output.

First you need to indicate which speakers are present in your system. Besides the Main speakers (Left & Right), these can include a Center, two Surround Speakers and a Subwoofer.

Call up the SETUP menu of the On Screen Display.

Select the SPEAKER SETTINGS.

Highlight PRESET and use the Left and Right arrow buttons to select the preset (PRESET 1, 2 or 3) that best applies to your setup. Select a preset based on speaker sizes, then use the Up and Down arrow buttons to adjust for the absence of Center, Surround speakers, or subwoofer.

Preset 1: Default Setting / Adjustment

Main

: LARGE / No Adjustment

Center

: LARGE / OFF

Surround

: LARGE / OFF

Subwoofer

: ON / OFF

In this mode, all speaker channels are large, i.e. full range, and the home theater system has a subwoofer. This preset is particularly useful for large rooms.

Preset 2: Default Setting / Adjustment

Main

: LARGE / No Adjustment

Center

: SMALL / OFF

Surround

: SMALL / OFF

Subwoofer

: OFF / ON

This preset is useful for a home theater system that does not have full range speakers. The bass frequencies from the center and surround channels are redirected to the main speakers.

Preset 3: Default Setting / Adjustment

Main

: SMALL / No Adjustment

Center

: SMALL / OFF

Surround

: SMALL / OFF

Subwoofer

: ON / No Adjustment

This preset is ideal for those systems using 5 small speak- ers combined with a subwoofer. The bass frequencies from each of these 5 channels are redirected to the subwoofer.

The Surround settings affect both the Surround Rear and Surround Back speakers.

SPEAKER SETTINGS

PRESET : 1

MAIN : LARGE

CENTER : OFF

SURROUND : LARGE

SUBWOOFER : ON

DO NOT SAVE AND EXIT

SAVE AND EXIT

ADCOM GTP-860 OWNER’S MANUAL 29

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Adcom GTP-860 owner manual Speaker Settings Preset Main Large
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GTP-860 specifications

The Adcom GTP-860 is a versatile audio component that seamlessly combines a high-performance stereo receiver and a multi-source digital preamp. Known for its robust features and reliability, the GTP-860 caters to both audiophiles and casual listeners, making it a staple in many home audio systems.

One of the standout features of the GTP-860 is its extensive connectivity options. With multiple analog and digital inputs, including optical and coaxial connections, users can easily integrate various devices such as CD players, Blu-ray players, and game consoles. The unit also includes a dedicated phono stage, providing support for vinyl enthusiasts. This wide range of connectivity ensures that users can enjoy high-quality audio from virtually any source, making it an adaptable choice for diverse audio setups.

The GTP-860 is equipped with advanced technologies that enhance its audio performance. It utilizes a high-quality digital-to-analog converter (DAC) that supports high-resolution audio formats, allowing for a richer and more detailed listening experience. The unit also features a built-in FM and AM tuner, enabling users to access their favorite radio stations with ease. The user-friendly interface and intuitive remote control further enhance the listening experience, allowing users to navigate through various settings and inputs effortlessly.

Another notable characteristic of the GTP-860 is its robust build quality. Constructed with premium materials, the unit not only looks sophisticated but is also designed to withstand the rigors of regular use. The solid chassis helps minimize vibrations, contributing to improved audio clarity and performance.

The Adcom GTP-860 is also known for its excellent sound staging and imaging capabilities. The unit is designed to reproduce a wide soundstage, allowing listeners to experience music as it was intended by the artists. The precise imaging ensures that every note and instrument can be distinctly heard, providing an immersive listening experience.

In summary, the Adcom GTP-860 is a feature-rich audio component that blends functionality and performance. With its versatile connectivity options, advanced audio technologies, and high build quality, it stands out as a compelling choice for anyone looking to elevate their home audio setup. Whether for casual listening or for critical listening sessions, the GTP-860 delivers on all fronts, making it a valuable addition to any audio system.
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