GefenTV GTV-VOLCONT-DA User manual

2.1 Audio Amplier
w/ Volume Stabilizer
GTV-VOLCONT-DA
User Manual
gefentv.com

Technical Support:
Telephone [phone]
[phone]
Fax [phone]
Technical Support Hours:
8:00 AM to 5:00 PM Monday thru Friday PST.
Write To:
Gefen LLC
c/o Customer Service
20600 Nordhoff St
Chatsworth, CA 91311
www.gefentv.com
[e-mail]
Notice
Gefen LLC reserves the right to make changes in the hardware, packaging and
any accompanying documentation without prior written notice.
For the latest rmware updates for this product, please visit Gefen’s download
Web page at http://www.gefen.com/kvm/support/download.jsp
2.1 Audio Amplier w/ Volume Stabilizer is a trademark of Gefen LLC
Manufactured under license from Dolby Laboratories.
“Dolby” and the double-D symbol are trademarks of
Dolby Laboratories.
© 2011 Gefen, LLC. All rights reserved.
All trademarks are the property of their respective owners.
ASKING FOR ASSISTANCE
Rev A1

CONTENTS
1 Introduction
2 Operation Notes
3 Features
4 Front Panel Layout
5 Front Panel Descriptions
6 Back Panel Layout
7 Back Panel Descriptions
8 IR Remote Control
8 Layout and Descriptions
10 Installing the Battery
10 Setting the IR Channel
11 Connection the 2.1 Audio Amplifi er w/ Volume Stabilizer
11 Wiring Diagram
12 Operating the 2.1 Audio Amplifi er w/ Volume Stabilizer
12 Status Screen
12 Standby Mode and Powering the Volume Stabilizer
13 Selecting the Audio Input
13 Adjusting the Volume
14 Bypass Mode
15 Menu System
15 Using the Menu System
15 Setting the Speaker Size
17 Setting the Speaker Level
19 Adjusting the Speaker Distance
20 Adjusting the Tone Control
22 Miscellaneous Setup
26 RS-232 Serial Control
27 RS-232 Serial Commands
54 Menu System Summary
54 Layout
55 Speaker Size
56 Speaker Level
57 Speaker Distance
58 Tone Control
59 Miscellaneous Setup
62 Exit
63 Specifications
64 Warranty

1
Congratulations on your purchase of the GefenTV 2.1 Audio Amplier w/ Volume
Stabilizer. Your complete satisfaction is very important to us.
GefenTV
GefenTV is a unique product line catering to the growing needs for innovative
home theater solutions. We specialize in total integration for your home theater,
while also focusing on going above and beyond customer expectations to ensure
you get the most from your hardware. We invite you to explore our distinct
product line and hope you nd your solutions.
The GefenTV 2.1 Audio Amplier w/ Volume Stabilizer
The GefenTV 2.1 Audio Amplier w/Volume Stabilizer is well suited for use in
small home entertainment systems or as an add-on audio processor to any
computer audio output. It offers three audio inputs (TOSLINK®, S/PDIF, Analog
L/R) for multiple audio sources. The product also incorporates a Dolby® Digital
decoder decoder to downmix 5.1 to 2.1 channels of audio. Dolby® Volume
Technology automatically outputs consistent audio levels regardless of the
program type (commercials, movies, or TV shows). The GefenTV 2.1 Audio
Amplier w/ Volume Stabilizer provides amplication of up to 25 Watts per
channel (Left and Right) fed through the unit’s speaker output binding posts
plus line-level output for a powered subwoofer. This product switches to standby
mode when not in use. An RS-232 port is provided for home automation
control. For easy access and control, use the front panel control buttons with an
illuminated LCD display, or the included IR remote control from several feet away.
How It Works
Connect the audio input source(s) to the GefenTV 2.1 Audio Amplier w/ Vol-
ume Stabilizer. Connect the speakers using speaker wires (not included) to the
Speaker Output binding posts. Connect the included RS-232 cable from the
RS-232 port to your home automation control device (optional). Plug in the in-
cluded power supply to the 24V DC power jack on the rear panel of the unit and
to a power outlet. Use the front panel buttons or the included IR remote to control
the front panel display menu functions, Mute, Input Select, Bypass, and Standby
mode.
INTRODUCTION

READ THESE NOTES BEFORE INSTALLING OR OPERATING
THE GEFENTV2.1 AUDIO AMPLIFIER W/ VOLUME STABILIZER
• GefenTV 2.1 Audio Amplier w/ Volume Stabilizer will use psycho-
acoustic technology to adjust volume automatically. It is best used for TV
programming where the level of sound rises and falls to an unacceptable
level.
• The device can be placed in Bypass Mode in situations where a wide
dynamic range is appropriate (such as movies and classical symphony
concerts). Bypass Mode disables the Dolby Volume Stabilizer.
• The remote can be used to control the GefenTV 2.1 Audio Amplier w/
Volume Stabilizer from a comfortable distance.
• This unit supports the following conversions:
Analog to Analog (two-channel stereo to two-channel stereo).
Digital to Analog (optical / coaxial to two-channel stereo).
2
OPERATION NOTES

3
Dolby® Volume features:
• Volume Leveler: Enables consistent volume levels at all times between TV
channels and between program materials
• Volume Modeler: Delivers the perception of a full-range audio experience at
any volume level
• Audio settings can be customized to suit your personal preferences and
listening conditions.
• Improves multichannel surround, even at low volumes.
• Produces clear audio with no unwanted noise.
Features
• Dolby® Volume and Dolby® Digital Certied
• Adjustable Dolby Volume Level
• Prevents uctuations in audio volume using Dolby Volume technology
• Accepts 2-channel analog audio and outputs 2.1 channel audio
• Accepts TOSLINK™ (optical) and S/PDIF (coax) digital audio inputs
• Accepts Dolby Digital 5.1 and converts it to 2.1 channel analog audio
• Dynamically boosts low and high-frequency content
• Bypass Mode permits audio to pass through unchanged
• Audio amplier (2 channels, 25 W per channel)
• Line-level analog L/R outputs plus subwoofer output
• RS-232 port for home automation control
• IR remote control and front panel controls
Package Includes
(1) GefenTV 2.1 Audio Amplier w/ Volume Stabilizer
(1) Analog Audio L/R RCA cable
(1) IR Remote Control Unit
(1) 24 V DC Power Adapter
(1) User Manual
FEATURES

4
FRONT PANEL LAYOUT
Front Panel
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10
854
OPTICAL +04DB PCM 2CH V OFF

5
1 Main LCD Display
This display will show pertinent status information and will be used to make
adjustments to features in the Menu System.
2 Left Cursor Button
This button is used to navigate the Menu System and change settings
by moving the cursor to the left.
3 Enter Button
This button is used to accept and save a current setting in the Menu
System.
4 Up Button
This button is used to navigate the Menu System and change settings
by moving the cursor up. This button is also used for increasing the
audio volume in the Status Screen (see page 13).
5 Right Cursor Button
This button is used to navigate the Menu System and change settings
by moving the cursor to the right.
6 Down Button
This button is used to navigate the Menu System and change settings
by moving the cursor down. This button is also used for decreasing the
audio volume in the Status Screen (see page 13).
7 Input Button
Selects between analog L/R, S/PDIF, or TOSLINK audio input.
8 Menu Button
This button will activate the Menu System which allows changes to
audio output.
9 Bypass Button
Press the Bypass button to disable Dolby Volume processing.
10 Mute Button
This button will cycle between Mute-On and Mute-Off modes. When the
Mute-On mode is enabled, all audio output is disabled.
11 Standby Button
Press the Standby button to place the unit in Standby Mode. Standby
Mode is an energy-saving state where less than 1W of power is consumed
when the product is not in use.
FRONT PANEL DESCRIPTIONS

6
BACK PANEL LAYOUT
Back Panel
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