GTP-870HD Preamp/Processor User’s Manual G T P - 8 7 0 H D standby volume FM/AM up room two on/off setup tune/preset video 1 down video 2 video 3 video 4 STOP tape CD ext 7.1 sur mode • The latest version of the firmware is required to enable all functionality described in this manual. • Check the Adcom website (www.adcom.com) for firmware updates.
Congratulations on your purchase of the Adcom GTP-870HD You have made a wise choice that will reward you with exceptionally accurate musical sound reproduction for years to come. To realize the full potential of your new preamp/processor, please read these operating and installation instructions thoroughly before attempting to make any connections to it. The GTP-870HD is not only designed to reproduce the highest quality sound and picture but also to deliver the greatest possible value.
Chapter 1 - Welcome Introduction ………………………………………………… 5 Key Features………………………………………………… 5 Unpacking the GTP-870HD ………………………… 5 Placing the GTP-870HD ……………………………… 6 About the Remote Control ………………………… 6 Front Panel Overview ………………………………… 7 Remote Control Overview …………………………… 8 Rear Panel Overview ……………………………………10 Display Overview …………………………………………12 Chapter 2 - Connections Setup Overview ……………………………………………31 Setup Navigation …………………………………………32 Input Configuration ………………………………………33 HD Scaler Configuration ………………
Important Safety Instructions • • • • • • • Important Safety Instructions • • • • • • • • Read all the safety and operating instructions before connecting or using this unit. Retain this notice and the owner’s manual for future reference. All warnings on the unit and in its operating instructions should be adhered to. All operating and use instructions should be followed. Do not use this unit near water.
Chapter 1 - Welcome Introduction Introducing Adcom’s new take on the Preamp/Processor: the no-nonsense GTP-870HD. Who hasn’t grown weary of manufacturers claiming every product on offer as redefining some elusive “standards” or idealizing the ever popular catch-all, “state of the art?” Well, so have we. So instead of assaulting you with yet another slew of marketing buzzwords and hyperbolic claims, we’ll just proudly introduce to you Adcom’s latest no-nonsense product: The GTP-870HD Preamp/Processor.
Placing the GTP-870HD Place the GTP-870HD on a stable, vibration-free surface away from moisture and out of direct sunlight. Your Adcom dealer will be pleased to show you many different types of audio/video equipment racks and cabinets. Chapter 1 - Welcome The GTP-870HD’s rear panel is the central connecting point for almost every component in your audio/ video system. Be sure to leave sufficient room behind the rear panel to accommodate cables, antenna leads, power cords, etc.
Front Panel Overview The following is an overview of the GTP-870HD front panel. Standby button Powers the GTP-870HD on/off (Standby mode). • The rear panel power switch must be on (1) for this button to function. • The Power LED glows amber in Standby mode and red in On mode. 2 Room Two On/Off button Activates the GTP-870HD’s Zone 2 outputs, usually connected to an amplifier/receiver in a second room. 3 Room Two Setup button Displays the Zone 2 configuration menu.
Remote Control Overview 2 Source Selector buttons • Vid 1~4 - Selects the Video 1, Video 2, Video 3, or Video 4 input, including the video, audio, and configuration settings associated with that input. Also sets the remote control to the command set associated with that input (see page 47). • CD - Selects the CD input, including all configuration settings associated with that input. Also sets the remote control to the CD command set (see page 48).
11 Bass button When Tone Control is on (by pressing the Bypass button), displays a Bass adjustment display. Use / to set the desired Bass level. 12 Treble button When Tone Control is on (by pressing the Bypass button), displays a Treble adjustment display. Use / to set the desired Treble level. 13 Sleep button Sets the sleep timer to power the GTP-870HD off after a specified length of time (30~180 minutes). 14 Backlight button Turns the remote control backlight on.
Rear Panel Overview The following is an overview of the GTP-870HD rear panel.
6 7 8 Composite/S-video inputs/outputs • Video 1~4 inputs (CVBS/S-video) - Connects to the Composite/S-video outputs of up to four video source components. • Video tape output (CVBS/S-video) Connects to the Composite/S-video inputs of a video recording component. Monitor outputs/HD bypass transcoder • Video out (CVBS/S-video) - Connects to the Composite/S-video inputs of a TV, monitor, or other display device.
Display Overview The following is an overview of the GTP-870HD on-screen and front panel displays. VIDEO 1 COAXIAL 1 DOLBY D -40.0 dB Chapter 1 - Welcome On-Screen Display Front Panel Display 12 1 Video source Displays the selected video source. 2 Audio source Displays the selected audio source. • In Tuner mode, displays the selected tuner frequency. 3 Surround mode Displays the selected Surround mode.
Chapter 2 - Connections Connections Overview The GTP-870HD is the heart and soul of your entertainment system. All roads lead to it (from your input devices), and all roads lead from it (to your output devices). In this chapter, you will connect the GTP-870HD to the various components in your home theater system.
AM/FM Antenna Connections Follow these steps to connect the supplied AM/FM antennas to the GTP-870HD. Connecting the AM Loop Antenna 1 Assemble the antenna. • Rotate the base until it snaps into place. 2 Connect the antenna. • Locate the AM antenna inputs. • Press the lever next to one of the terminals and insert one of the antenna leads into the terminal. Release the lever to lock the lead in place. • Repeat for the other lead. 3 Position the antenna for best reception.
Basic Audio/Video Connections 2 This section provides a general connection method that is suitable for virtually any audio/video source component, including: • DVD players • Laser disc players • CableTV boxes • Satellite receivers • HDTV set-top boxes • VCRs (see notes below) • PVRs • Media PCs • iPod docking stations 3 4 Video 4 Video 3 Input Input Notes: ������������ �� � ���� ���� • �� ������� �� ���������������������� �� ������� �� ������� �� ������� �� ��� �� �������������� � � •
DVD Player Connections The GTP-870HD is a movie lover’s dream. Choose from the following special options when connecting your DVD player. Component/Progressive Scan Connections To take the video quality up a notch, use your DVD player’s Component/Progressive Scan outputs. • See page 17. Digital Audio Connections For crystal-clear multi-channel digital audio, use your DVD player’s digital audio outputs. • See page 18.
Component/Progressive Scan Connections The GTP-870HD features four Component video inputs for connection to DVD players, digital CableTV boxes, digital satellite receivers, HDTV receivers/ tuners, and more. Component video is the best quality analog connection method to an HDTV display. Special Note on Progressive Scan DVD Players If you want to use the GTP-870HD’s built-in video scaling capability, you MUST set the output of your Progressive Scan DVD player to standard 480i resolution.
Digital Audio Connections The GTP-870HD features six digital audio inputs— three coaxial and three optical—to receive multichannel bitstreams from your DVD player or other digital audio source component. Chapter 2 - Connections Connecting Digital Audio Components 1 Choose an available digital audio input. 2 Connect digital audio cable(s). • Using a digital coaxial audio cable, connect the coaxial output on your source device to the corresponding coaxial input on the GTP870HD.
HDMI Connections About HDMI HDMI (High Definition Multimedia Interface) is an advanced audio/video connection method that transfers full-bandwidth, uncompressed digital audio and video signals over a single cable. As a result, pure digital signals can pass unfettered from your HDMI-compatible source components to the GTP-870HD and out to your digital TV for superior picture and sound quality. Connecting HDMI Components 1 Choose an available HDMI input. 2 Connect HDMI cable(s).
External Decoder Connections If you’re a true audiophile, you’re probably familiar with DVD-Audio and SACD, multi-channel audio formats that require their own decoding and unique connection methods. Follow these steps to connect a DVD, DVD-A, or SACD player with up to 7.1-channel analog outputs. Tip Chapter 2 - Connections Connecting a DVD-A/SACD Player 1 Using eight RCA cables, connect the 7.1 channel analog audio outputs from your DVD player to the corresponding Ext 7.1 inputs on the GTP-870HD.
CD/Tape Player Connections Follow these steps to connect a CD or tape player to the GTP-870HD. Connecting a CD Player 1 Using RCA cables, connect the audio outputs on your CD player to the CD inputs on the GTP870HD. • If your CD player is equipped with a digital audio output (e.g. to play back a DTS CD), see Digital Audio Connections on page 18. Connecting a Tape Player 1 Using RCA cables, connect the audio outputs on your tape player to the Tape inputs on the GTP870HD.
TV/Monitor Connections Component Video Connections 1 Using a Component video cable, connect the Y/ Pb/Pr outputs on the GTP-870HD to the corresponding Y/Pb/Pr inputs on your digital display device. 2 Be sure to match the red, green, and blue connectors accordingly.
Speaker Placement TV Placing your Speakers To enjoy the full effect of your home theater system, it is recommended that you connect a complete set of 7.1-channel surround sound speakers, including: • Front Speakers (LF/RF) • Center Speaker (C) 7 • Surround Speakers (LS/RS) • Surround Back Speakers (LB/RB) • Subwoofer (S) .1 If that’s not possible, the next best thing is a 5.1channel setup, including: • Front Speakers (LF/RF) 5 • Center Speaker (C) • Surround Speakers (LS/RS) • Subwoofer (S) .
Amplifier Connections (XLR) Follow these steps to connect the GTP-870HD to a power amplifier using the balanced audio outputs. Each channel is equipped with an XLR jack which allows you to enjoy professional quality sound by minimizing the effects of RF and other interference. Chapter 2 - Connections Connecting a 7.1-Channel Amplifier (XLR) 1 Using seven XLR cables, connect the balanced audio outputs from the GTP-870HD to the corresponding XLR inputs on your amplifier.
Amplifier/Subwoofer Connections (RCA) Follow these steps to connect the GTP-870HD to a power amplifier using the 7.1 preamp (unbalanced) outputs. You can also follow these steps to connect a powered subwoofer. Connecting a 7.1-Channel Amplifier (RCA) 1 Using seven RCA cables, connect the 7.1 channel preamp outputs (RF, RS, RB, C, LF, LS, and LB) from the GTP-870HD to the corresponding RCA inputs on your amplifier. 2 Connect the S output to a powered subwoofer. Connecting a Powered Subwoofer The “.1” in 5.
Video Recorder Connections It’s not always about playback. Sometimes you want to record, and these days that means DVD recorders, HDD recorders, and PVRs (such as TiVo®), in addition to the old standby, the VCR. Once you’ve connected a dual playback/record device to the Video 3 or Video 4 inputs (see page 15), follow these steps to connect the GTP-870HD back out to the device for record capability. Tip An alternate use of the S-Video Out is to provide video to 'legacy' video display devices.
Tape Out/Aux Connections The GTP-870HD includes two additional sets of RCA outputs for connection to a tape recorder and/or audio system. Follow these steps to connect your audio output device to the GTP-870HD. Connecting a Tape Recorder 1 Connect the tape recorder. • Using RCA cables, connect the Tape outputs on the GTP-870HD to the audio inputs on your tape recorder. 2 Monitor the tape recording. • Press the Tape button on the remote control or front panel to monitor the tape output.
Room 2 Connections Connecting the 12V DC Trigger If your external device is equipped with a 12V DC trigger, you can have the device power on automatically when you select Room 2 from the GTP-870HD. 1 Connect the 12V DC trigger. • Using a cable with two mono mini-plugs, connect the 12V DC trigger jack from the GTP-870HD to the 12V DC trigger jack on your external component. • Now when you press the Room 2 button, the sound system in Room 2 will power on automatically.
Control Connections Sensors, triggers, and PCs, oh my. If you’ve gotten this far, you’re really fine-tuning your home theater. This section is all about control: • Remote IR sensors - These allow you to control your GTP-870HD even if it is behind closed doors or otherwise concealed from view. • Triggers - These allow you to automatically power on connected devices, such as motorized movie screens and connected amplifiers, when the GTP-870HD is powered on or a particular input is selected.
Power Connections When all connections are complete, you’re ready to check the voltage switch, plug in the power cable, and power on the GTP-870HD. Checking the Voltage Switch 1 To prevent damage to your equipment, make sure the rear panel voltage switch is set correctly for your geographic region. • Select 120V for U.S. and Canada. • Select 230V for EU and Australia operation. • For other regions, check with your local authorities.
Chapter 3 - Setup Setup Overview The following is an overview of the GTP-870HD Setup menu, including: • • • • • • • • • Setup navigation .................................. Input configuration ............................... Speaker configuration ............................ Delay configuration ............................... Channel balance ................................... ProLogic II/Neo:6 configuration ................. Room 2 configuration ............................. System configuration ................
Setup Navigation Chapter 3 - Setup Use the following remote control buttons to navigate the Setup menu. • Main - Press the Main button to select the GTP870HD. You must first select the GTP-870HD before you can access the Setup menu. • Setup - Press the Setup button to display and exit the Setup menu. • Arrows - Press the / buttons to move the selection arrow up or down the list of menu items. Press the / buttons to step through all available options for the selected menu item.
Input Configuration What options are available when you select an input source? The following is an overview of the configuration settings available for each input. To 1 2 3 access the Input Configuration menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select INPUT CONFIG, then press the Select button. 4 Use the / buttons to choose from the following menu items: SOURCE Selects the input source you are configuring.
HD Scaler Configuration Now it’s time to enable the HD Scaler and configure it for your display and source devices. To 1 2 3 access the HD Scaler menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select INPUT CONFIG, then press the Select button. 4 Use the / buttons to select HD SCALER, then press the Select button.
Picture Controls The HD Scaler includes basic and advanced controls to help you achieve optimal picture quality for each input source. access the Picture Controls menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select INPUT CONFIG, then press the Select button. 4 Use the / buttons to select HD SCALER, then press the Select button. 5 Use the / buttons to select PICTURE CONTROLS, then press the Select button.
Volume/Tone Configuration Want to adjust the bass, treble, and relative volume for each input source? Look no further than the Volume/Tone Configuration menu. To 1 2 3 access the Volume/Tone Configuration menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select INPUT CONFIG, then press the Select button. 4 Use the / buttons to select VOLUME/TONE, then press the Select button.
Speaker Configuration What speaker types and sizes are you using? The following is an overview of the Speaker Configuration menu. To 1 2 3 access the Speaker Configuration menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select SPEAKER CONFIG, then press the Select button. 4 Use the / buttons to choose from the following menu items: FRONT Selects the relative size of your front speakers.
Delay Configuration How far is each speaker from your primary listening area? The GTP-870HD uses this information to calculate differences in distance and adds milliseconds of delay if necessary to ensure that all audio signals reach your ears simultaneously from all speakers. The following is an overview of the Delay Configuration menu. To 1 2 3 access the Delay Configuration menu: Press the Main button on the remote control. Press the Setup button.
Channel Balance How can you achieve optimal balance in volume levels from all speakers? The GTP-870HD supplies individual sliders and a “pink noise” test tone to aid you in balancing your speaker levels. For best results, it is recommended that you use a Sound Pressure Level (SPL) meter to precisely measure the volume levels from each speaker. However, your ear aided by experimentation is ultimately the best judge. The following is an overview of the Channel Balance menu.
Pro Logic IIx/Neo:6 Configuration The GTP-870HD makes the most of your incoming stereo signals. With the built-in Dolby Pro Logic IIx and DTS Neo:6 decoders, not only can you slice, dice, and expertly distribute a stereo signal to seven or more speakers, you can even fine-tune the imaging and depth of the sound field specifically for music sources. To access the Pro Logic IIx/Neo:6 configuration menu: 1 Press the Main button on the remote control. 2 Press the Setup button.
Room 2 Basic Configuration What input source do you want to play in Room 2? Once that is specified, you have the option of fine tuning audio levels depending on the requirements of your Room 2 audio system. To 1 2 3 access the Room 2 Configuration menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select ROOM 2 CONFIG, then press the Select button.
Room 2 Advanced Configuration The Room 2 Advanced Configuration menu contains powerful tools to customize and optimize the output of the GTP-870HD to your secondary audio system. To 1 2 3 access the Room 2 Advanced Config menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select ROOM 2 CONFIG, then press the Select button. 4 Use the / buttons to select ADVANCED SETTINGS, then press the Select button.
System Configuration The System Configuration menu provides initial power, on-screen display time outs, and system tools to put the finishing touches on your system setup. One critical tool is the “Setup Lock,” which allows you to lock down all the settings you’ve made to the GTP-870HD to prevent accidental changes or tampering with the unit. To 1 2 3 access the System Configuration menu: Press the Main button on the remote control. Press the Setup button.
Input Labeling Tired of trying to remember which source device goes with which Video input? The Label Source menu allows you to label your inputs with names that uniquely identify your source devices. To 1 2 3 access the Label Source menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select SYSTEM CONFIG, then press the Select button. 4 Use the / buttons to select LABEL SOURCE, then press the Select button.
Analog Input Level The GTP-870HD allows you to adjust the voltage reference levels independently for each of the unit’s seven analog audio inputs. Check the technical specifications of your source components to determine the optimum reference level setting. To 1 2 3 access the Analog Input Level menu: Press the Main button on the remote control. Press the Setup button. Use the / buttons to select ANALOG INPUT LEVEL, then press the Select button.
Remote Control Setup The GTP-870HD is a learning remote control that is capable of storing and executing commands for all remote controls in your home theater system. In this way, you can eliminate the confusion of using multiple remotes. This section is divided into two main parts: Using Preprogrammed Commands The first section is an overview of the preprogrammed commands for each source: • Main commands ................................... 39 • Video 1~3 commands .............................
Using Preprogrammed Commands The following commands are preprogrammed for the Main and Video 1-3 inputs: Main Commands Function Selects GTP-870HD codes Selects VIDEO 1 codes Selects VIDEO 2 codes Selects VIDEO 3 codes Selects VIDEO 4 codes (GDV-850) Selects CD codes (GCD-750) Selects GTP-870HD Tuner codes Selects GTP-870HD Room 2 codes Toggles Power On/Standby Toggles External 7.
Using Preprogrammed Commands The following commands are preprogrammed for the Video 4 and CD inputs: Video 4 (GDV-850) Commands Chapter 3 - Setup Button main vid 1 vid 2 vid 3 vid 4 CD tuner Rm. 2 power ext 7.1 tape mute setup volume volume play menu / / select pause stop mode th-eq ch-trim test 1 2 3 4 5 6 7 8 9 +10 tune + tune FM/AM/HD mem Pre/Tune St/Mon seek bass treble bypass d.
Using Preprogrammed Commands The following commands are preprogrammed for the Tuner and Room 2 inputs: Tuner Commands Function Selects GTP-870HD codes Selects VIDEO 1 codes Selects VIDEO 2 codes Selects VIDEO 3 codes Selects VIDEO 4 codes (GDV-850) Selects CD codes (GCD-750) Selects GTP-870HD Tuner codes Selects GTP-870HD Room 2 codes Toggles Power On/Standby Programmable Toggles Tape Monitor On/Off Toggles Audio Mute On/Off GTP-870HD OSD Setup Menu Master Volume UP Master Volume DN Programmable GTP-870HD O
Programming Remote Commands Once you’re familiar with the preprogrammed commands, you may wish to program specific buttons on the GTP-870HD remote to control your source components. To do this, you will need: • Your source component remote control, which will teach the new command. • The GTP-870HD remote control, which will learn the new command. Chapter 3 - Setup Programming a Command 1 Place your source remote “head-to-head” with the GTP-870HD remote.
Deleting Remote Commands Deleting a Command 1 On the GTP-870HD remote, press the applicable Source and Select buttons simultaneously. • The orange status LED and the Source button glow and remain lit. 2 Press the button whose function you wish to clear. • The orange status LED begins flashing. 3 Press the Backlight button. • The green status LED blinks twice and then goes back to steady orange to indicate that the command has been deleted.
Programming Macro Buttons If you find yourself repeatedly pressing the same sequence of buttons while using your GTP-870HD, then consider taking advantage of the built-in Macro feature. Macros allow you to execute a series of commands (up to ten button presses) at the touch of a single button.
Discrete Remote Control Commands The GTP-870HD can be controlled via its serial RS-232 port. The serial port can be connected to a media control center, PC, or ‘dumb terminal’ via a straight-through standard 9-pin serial port cable (MALE on one end and FEMALE on the other end). When using a PC, a terminal emulator program (e.g. HyperTerminal), can be used to control the GTP-870HD.
Chapter 3 - Setup Function Description 54 Data ASCII Function Description TUNER mode – PRESET 0x67 e TUNER mode – TUNE 0x68 h TUNER MEMORY Function (Select/ Save) 0x73 s Subwoofer Channel Trim - 0x4C L Lip Sync Adjust Down (Decrease delay) 0x0D CR Lip Sync Adjust Up (Increase delay) 0x60 ` Data ASCII Theater EQ compensation - ON 0x69 i TUNER Preset 1 Select 0x74 t Theater EQ compensation - OFF 0x6A j TUNER Preset 2 Select 0x75 u Select: “tape” Monitor (Toggle On/Off) 0x
Chapter 4 - Operations Operations Overview Now that you’ve connected and configured your GTP870HD, it’s time for the fun part—enjoying the full power and performance of your Adcom system. This chapter covers: • • • • • • • • • Basic Audio/Video Playback ..................... 56 Ext. 7.1 Playback .................................. 56 Tape Playback ..................................... 56 Selecting Surround Modes ....................... 57 Tone Control .......................................
Basic Audio/Video Playback Follow these steps to play an audio/video source component connected to the Video 1, Video 2, Video 3, Video 4, or CD inputs. Chapter 4 - Operations Playing an AV Source Component 1 Before you begin: • Power on the GTP-870HD. • Power on your source component. • Power on your TV/display (if applicable). • Power on your amp/subwoofer (if applicable) 2 Select your input source. • Press the desired Source selector button (Video 1, Video 2, Video 3, Video 4, or CD) on the GTP-870HD.
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 specific speaker configuration. • To set the default Surround mode for each input, see page 33.
Chapter 4 - Operations Other Surround Modes 7.1 m2 Uses an Adcom-proprietary digital processing technology to expand incoming stereo signals to 7.1-channel surround sound. Use if: • Your source component is connected to the analog or digital audio inputs. • Your source audio is in 2-channel analog or digital PCM format. • You have seven speakers plus a subwoofer.
Basic Recording Follow these steps make a recording using the playback and recording components connected to the GTP-870HD. You will first need to identify your Source and Target components. • Source - This can be the AM/FM tuner or any connected audio/video device (e.g, a cable box, DVD player, VCR, etc.). • Target - This can be any connected recording device (e.g., a VCR, DVD recorder, PVR, tape recorder, etc.). www.adcom.com 4 5 Cue your Source device.
Tuner Operations Follow these steps to use the GTP-870HD’s built-in AM/FM tuner. Before you begin, make sure the AM/ FM antennas are properly connected; see page 14. Selecting Tuner Mode To select Tuner mode: • Press the Tuner button on the remote control. or • Press the FM/AM button on the front panel. Selecting the Tuner Band To switch between the AM/FM bands: • Press the FM/AM/HD button on the remote control. or • Press the FM/AM button on the front panel.
System Operations The GTP-870HD includes additional features that enhance the user experience, including a built-in sleep timer and front panel display dimmer. Using the Sleep Timer If you enjoy falling asleep while watching TV or listening to music, you can use the sleep timer to automatically power off the GTP-870HD after a set period of time. Using the Front Panel Display Dimmer The front panel display has three brightness levels to suit any need.
Room 2 Operations The Room 2 feature makes the GTP-870HD a true multi-tasking device. For example, you can watch a movie in one room and play a CD in another at the touch of a button. To use the Room 2 feature, you must have: • An amplifier or receiver connected to the Zone 2 Outputs; see page 28. • A Room 2 input source specified in the Setup menu; see page 41. Chapter 4 - Operations Activating the Room 2 Output To activate the Room 2 output: 1 Power on the GTP-870HD. 2 Select the Room 2 output.
Chapter 5 - Help Customer Support Use the Troubleshooting chart on page 64 to resolve common situations that don’t require professional attention. If the information provided does not resolve your problem, please contact your Adcom dealer or contact the Adcom customer service department as follows: Adcom, LLC 8541 E. Anderson Dr., Suite 101 Scottsdale, Arizona 85255 • Telephone: (480) 607-2277 • Fax: (480) 348-9876 • Email: service@adcom.com • Web: www.adcom.
Troubleshooting The table below shows possible causes and solutions to common GTP-870HD issues. If you do not see the answers you need here, please contact your Adcom dealer or customer service department; see page 63.
Technical Specifications PREAMPLIFIER ANALOG SECTION PREAMPLIFIER DIGITAL SECTION Frequency Response • Digital Input ............10Hz to 22kHz +0/-0.2dB THD+N (@ Rated Input & Output) • Digital Input ................. 0.009% (A-weighted) S/N Ratio (ref. 2.0Vrms A-weighted) • Digital Input .................................... 99dB Bass Management (Front/Center/Surround/Sub) • High-Pass Slope .............Crossover Frequency • (Small Spkr Setting) .... 12dB/octave (2nd order) (Adj.
Index A H S Analog Input Level 45 Audio Cables 13 HDMI 19, 22, 34 Safety Instructions 4 Scaler 19, 34 Setup Navigation 32 Overview 31 Sleep Timer 61 Speaker Configuration 37 Placement 23 Surround Modes Dolby 57 DTS 57 Selecting 57 Sync 9, 56 System Configuration 43 System Operations 61 C Chapter 5 - Help Channel Balance 39 Connections Amplifier 24, 25 Antenna 14 Audio/Video 15 CableTV box 15 CD Player 21 Component Video 17 Digital Audio 18 DVD Player 16 External Decoder 20 HDMI 19 HDTV set-top box 15 i
Adcom shall not be liable for any errors contained herein or for any damages arising out of or related to this document or the information contained herein, even if Adcom has been advised of the possibility of such damages. This document is intended for informational and instructional purposes only. Adcom reserves the right to make changes in the specifications and other information contained in this document without prior notification.
8541 East Anderson Drive, Suite 101 Scottsdale, Arizona 85255 Voice: 480.607.2277 Fax: 480.348.9876 www.adcom.com GTP-870HD_manual_v1.