GefenTV GTV-VOLCONT-D User manual

Auto Volume Stabilizer
w/Digital Audio Decoder
GTV-VOLCONT-D
User Manual
Auto Volume Stabilizer
w/Digital Audio Decoder
GTV-VOLCONT-D
User Manual

ASKING FOR ASSISTANCE
ASKING FOR ASSISTANCE
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.
GefenTV Auto Volume Stabilizer w/Digital Audio Decoder is a trademark of Gefen LLC
Manufactured under license from Dolby Laboratories.
“Dolby” and the double-D symbol are trademarks of
Dolby Laboratories.
© 2010 Gefen LLC, All Rights Reserved
All trademarks are the property of their respective owners.
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.
GefenTV Auto Volume Stabilizer w/Digital Audio Decoder is a trademark of Gefen LLC
Manufactured under license from Dolby Laboratories.
“Dolby” and the double-D symbol are trademarks of
Dolby Laboratories.
© 2010 Gefen LLC, All Rights Reserved
All trademarks are the property of their respective owners.

CONTENTS
CONTENTS
Introduction...............................................................................................................................................1
Operation Notes........................................................................................................................................2
Features.....................................................................................................................................................3
Panel Layout.............................................................................................................................................4
Panel Descriptions...................................................................................................................................5
Connecting And Operating The Auto Volume Stabilizer.......................................................................6
Bypass And Standby Modes ...................................................................................................................7
Auto Volume Stabilizer Remote Description..........................................................................................8
Specifications...........................................................................................................................................9
Warranty..................................................................................................................................................10
Introduction...............................................................................................................................................1
Operation Notes........................................................................................................................................2
Features.....................................................................................................................................................3
Panel Layout.............................................................................................................................................4
Panel Descriptions...................................................................................................................................5
Connecting And Operating The Auto Volume Stabilizer.......................................................................6
Bypass And Standby Modes ...................................................................................................................7
Auto Volume Stabilizer Remote Description..........................................................................................8
Specifications...........................................................................................................................................9
Warranty..................................................................................................................................................10

1
1
INTRODUCTION
Congratulations on your purchase of the GefenTV Auto 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 find your
solutions. Don’t see what you are looking for here? Please call us so we can better assist you with your particular
needs.
The GefenTV Auto Volume Stabilizer
Annoyed by loud commercials? Enjoy listening to the same volume levels when watching any TV program or during
commercials, no matter what is on. The GefenTV Auto Volume Stabilizer with Digital Audio Decoder product serves
two functions: it is a high-quality volume stabilizer and also delivers a mixdown from a 5.1 channel to two-channel, Left
Right audio using Dolby AC3 decoding. It actually makes the volume adjustments in such a subtle way that you won’t
even notice the change.
An additional feature includes a bypass button that allows the pass-through of unmodified incoming audio. Using
Dolby Volume technology, the unit senses changes in volume levels, and then maintains a steady volume level for any
input sound coming from DVD, Blu-ray or other multimedia source. Listen to movies and TV shows easily without the
inconvenience of continuously fiddling with the volume levels.
How It Works
Place the GefenTV Auto Volume Stabilizer somewhere close to where you want to connect it. Connect the audio
source into the back of the unit (either digital audio or analog). Connect the audio output of the unit to an A/V receiver.
Connect the included 5V DC external power supply to the back of the unit. The LED in the front will light up red show-
ing that the unit is in “standby mode.” Next push the “Bypass” button or press the “Power” button on the supplied I/R
remote control, and the LED next to the “Bypass” button will go out while one of the three audio input LEDs will also
light up bright blue. This corresponds to the chosen audio input at the back. Press the audio selector button at the
back of the unit to select the audio input type.
Congratulations on your purchase of the GefenTV Auto 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 find your
solutions. Don’t see what you are looking for here? Please call us so we can better assist you with your particular
needs.
The GefenTV Auto Volume Stabilizer
Annoyed by loud commercials? Enjoy listening to the same volume levels when watching any TV program or during
commercials, no matter what is on. The GefenTV Auto Volume Stabilizer with Digital Audio Decoder product serves
two functions: it is a high-quality volume stabilizer and also delivers a mixdown from a 5.1 channel to two-channel, Left
Right audio using Dolby AC3 decoding. It actually makes the volume adjustments in such a subtle way that you won’t
even notice the change.
An additional feature includes a bypass button that allows the pass-through of unmodified incoming audio. Using
Dolby Volume technology, the unit senses changes in volume levels, and then maintains a steady volume level for any
input sound coming from DVD, Blu-ray or other multimedia source. Listen to movies and TV shows easily without the
inconvenience of continuously fiddling with the volume levels.
How It Works
Place the GefenTV Auto Volume Stabilizer somewhere close to where you want to connect it. Connect the audio
source into the back of the unit (either digital audio or analog). Connect the audio output of the unit to an A/V receiver.
Connect the included 5V DC external power supply to the back of the unit. The LED in the front will light up red show-
ing that the unit is in “standby mode.” Next push the “Bypass” button or press the “Power” button on the supplied I/R
remote control, and the LED next to the “Bypass” button will go out while one of the three audio input LEDs will also
light up bright blue. This corresponds to the chosen audio input at the back. Press the audio selector button at the
back of the unit to select the audio input type.
INTRODUCTION

READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE GEFENTV AUTO VOLUME STABILIZER
• GefenTV Auto Volume Stabilizer will use Dolby Volume 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 bypassed in situations where a wide dynamic range is appropriate (such as
movies and classical symphony concerts).
• The remote can be used to control the GefenTV Auto Volume Stabilizer from a comfortable
distance.
• This unit supports the following conversions:
Analog to Analog (two-channel stereo to two-channel stereo).
Analog to Digital (two-channel stereo to optical / coaxial).
Digital to Digital (two-channel/multi-channel optical/coaxial to optical/coaxial).
Digital to Analog (two-channel/multi-channel optical/coaxial to two-channel stereo).
• Dolby Digital (AC-3) encoded multi-channel sources will be converted to Dolby L/R when output on
both the analog and digital outputs.
READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE GEFENTV AUTO VOLUME STABILIZER
• GefenTV Auto Volume Stabilizer will use Dolby Volume 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 bypassed in situations where a wide dynamic range is appropriate (such as
movies and classical symphony concerts).
• The remote can be used to control the GefenTV Auto Volume Stabilizer from a comfortable
distance.
• This unit supports the following conversions:
Analog to Analog (two-channel stereo to two-channel stereo).
Analog to Digital (two-channel stereo to optical / coaxial).
Digital to Digital (two-channel/multi-channel optical/coaxial to optical/coaxial).
Digital to Analog (two-channel/multi-channel optical/coaxial to two-channel stereo).
• Dolby Digital (AC-3) encoded multi-channel sources will be converted to Dolby L/R when output on
both the analog and digital outputs.
OPERATION NOTES
2
2
OPERATION NOTES

3
3
FEATURES
Features
• Prevent fluctuations in audio volume using Dolby Volume™ processing technology.
• Automatic down-mixing from Dolby Digital 5.1 (AC-3) to two-channel L/R on all outputs ensures
compatibility with broadcast formats.
• Boosts low and high-frequency content dynamically (20 bands / channel) using an advanced
psycho-acoustic modeling engine. Prevents loss of audio fidelity regardless of audio level. 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. For
example: the Volume Controller will dynamically adjust bass and treble in order to compensate for
audible frequencies lost due to low volume.
• Built-in analog-to-digital and digital-to-analog conversion.
• Bypass Mode permits audio to pass through unmodified by Dolby Volume™ processing (Dolby
Digital™ 5.1 is down-mixed to two-channel L/R format).
• All outputs remain active regardless of the input selection.
• The Input Select button allows choice between analog L/R, Coax, or Optical inputs.
• Standby Mode for low-power consumption.
Package Includes
(1) Auto Volume Stabilizer w/Digital Audio Decoder
(1) Analog Audio L/R Cable
(1) 5V DC Power Supply
(1) IR Remote
(1) User’s Manual
Features
• Prevent fluctuations in audio volume using Dolby Volume™ processing technology.
• Automatic down-mixing from Dolby Digital 5.1 (AC-3) to two-channel L/R on all outputs ensures
compatibility with broadcast formats.
• Boosts low and high-frequency content dynamically (20 bands / channel) using an advanced
psycho-acoustic modeling engine. Prevents loss of audio fidelity regardless of audio level. 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. For
example: the Volume Controller will dynamically adjust bass and treble in order to compensate for
audible frequencies lost due to low volume.
• Built-in analog-to-digital and digital-to-analog conversion.
• Bypass Mode permits audio to pass through unmodified by Dolby Volume™ processing (Dolby
Digital™ 5.1 is down-mixed to two-channel L/R format).
• All outputs remain active regardless of the input selection.
• The Input Select button allows choice between analog L/R, Coax, or Optical inputs.
• Standby Mode for low-power consumption.
Package Includes
(1) Auto Volume Stabilizer w/Digital Audio Decoder
(1) Analog Audio L/R Cable
(1) 5V DC Power Supply
(1) IR Remote
(1) User’s Manual
FEATURES

4
4
PANEL LAYOUT
Front Panel
Front Panel
Back Panel
Back Panel
1
1
2*
2*
5
5
6
6
3
3
4
4
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
*LED Mode Table
Mode LED Color
Standby Red
Dolby Digital + Dolby Volume On Blue
Dolby Digital + Dolby Volume Off Purple
LPCM + Dolby Volume On Blank
LPCM + Dolby Volume Off Red
*LED Mode Table
Mode LED Color
Standby Red
Dolby Digital + Dolby Volume On Blue
Dolby Digital + Dolby Volume Off Purple
LPCM + Dolby Volume On Blank
LPCM + Dolby Volume Off Red
PANEL LAYOUT

5
5
PANEL DESCRIPTIONS
1 Bypass Button
Used to place the unit in Bypass Mode,
allowing the signal to pass through
unmodified.
2 Bypass LED
Indicated the current state of the unit. See
Page 4 and 6 for details.
3 I/R Port
Used to communicate with the included I/R
remote
4 L/R LED
The LED will turn blue to indicate the audio
source is set to L/R analog
5 Coax (S/PDIF) LED
Turns blue to indicate that the audio input is
set to Coax
6 Optical (TOSLINK) LED
Turns blue to indicate that the audio input is
set to Optical
7 5V DC Power Receptacle
Connect the included 5V DC power supply to
this port
8 Input Select Button
Used to select between L/R audio, Coax, and
Optical inputs
9 Optical (TOSLINK) Input
Connect an Optical cable from this port to the
Optical output port on the A/V equipment
10 Coax (S/PDIF) Input
Connect a Coax cable from this port to a Coax
input port on the A/V equipment
11 Analog L/R (RCA) Input
Connect an RCA L/R stereo pair from these
ports to the RCA L/R output pair on the source
device
12 Optical (TOSLINK) Output
Connect an optical cable from this port to the
Optical input port on the A/V equipment
13 Coax (S/PDIF) Output
Connect a Coax cable from this port to a Coax
input port on the A/V equipment
14 Analog L/R (RCA) Output
Connect a L/R RCA stereo pair from this output
to a L/R RCA stereo input pair on the A/V
equipment
1 Bypass Button
Used to place the unit in Bypass Mode,
allowing the signal to pass through
unmodified.
2 Bypass LED
Indicated the current state of the unit. See
Page 4 and 6 for details.
3 I/R Port
Used to communicate with the included I/R
remote
4 L/R LED
The LED will turn blue to indicate the audio
source is set to L/R analog
5 Coax (S/PDIF) LED
Turns blue to indicate that the audio input is
set to Coax
6 Optical (TOSLINK) LED
Turns blue to indicate that the audio input is
set to Optical
7 5V DC Power Receptacle
Connect the included 5V DC power supply to
this port
8 Input Select Button
Used to select between L/R audio, Coax, and
Optical inputs
9 Optical (TOSLINK) Input
Connect an Optical cable from this port to the
Optical output port on the A/V equipment
10 Coax (S/PDIF) Input
Connect a Coax cable from this port to a Coax
input port on the A/V equipment
11 Analog L/R (RCA) Input
Connect an RCA L/R stereo pair from these
ports to the RCA L/R output pair on the source
device
12 Optical (TOSLINK) Output
Connect an optical cable from this port to the
Optical input port on the A/V equipment
13 Coax (S/PDIF) Output
Connect a Coax cable from this port to a Coax
input port on the A/V equipment
14 Analog L/R (RCA) Output
Connect a L/R RCA stereo pair from this output
to a L/R RCA stereo input pair on the A/V
equipment
PANEL DESCRIPTIONS

6
6
CONNECTING AND OPERATING THE AUTO VOLUME STABILIZER
How to Connect the GefenTV Auto Volume Stabilizer
1. Connect the audio source to the Audio Input section of the GefenTV Auto Volume Stabilizer using
the Optical, Coax and / or L/R analog audio cables.
2. Connect another set of audio optical, coax, and / or L/R analog audio cables from the Audio Output
section of the GefenTV Auto Volume Stabilizer to the input(s) of the A/V equipment.
3. Connect the included 5 V DC power adapter to the power receptacle on the rear of GefenTV Auto
Volume Stabilizer. The LED next to the BYPASS button will turn red, indicating that the unit is
powered and in Standby Mode.
4. Press the BYPASS button to enable Dolby Volume™ processing.
5. Bypass LED Status:
Red: Standby Mode / Dolby Volume™ processing disabled / LPCM
audio.
Blue: Dolby Volume™ processing with Dolby Digital™ decoding.
Purple: Dolby Volume™ with Dolby Digital™ decoding disabled.
Off: LPCM audio with Dolby Volume™ processing disabled.
6. Select the desired input source (Optical, Coax, or L/R audio) by pressing the Input Select button
on the back of the unit. The SELECT button on the IR remote may also be used to select the input
source.
How to Connect the GefenTV Auto Volume Stabilizer
1. Connect the audio source to the Audio Input section of the GefenTV Auto Volume Stabilizer using
the Optical, Coax and / or L/R analog audio cables.
2. Connect another set of audio optical, coax, and / or L/R analog audio cables from the Audio Output
section of the GefenTV Auto Volume Stabilizer to the input(s) of the A/V equipment.
3. Connect the included 5 V DC power adapter to the power receptacle on the rear of GefenTV Auto
Volume Stabilizer. The LED next to the BYPASS button will turn red, indicating that the unit is
powered and in Standby Mode.
4. Press the BYPASS button to enable Dolby Volume™ processing.
5. Bypass LED Status:
Red: Standby Mode / Dolby Volume™ processing disabled / LPCM
audio.
Blue: Dolby Volume™ processing with Dolby Digital™ decoding.
Purple: Dolby Volume™ with Dolby Digital™ decoding disabled.
Off: LPCM audio with Dolby Volume™ processing disabled.
6. Select the desired input source (Optical, Coax, or L/R audio) by pressing the Input Select button
on the back of the unit. The SELECT button on the IR remote may also be used to select the input
source.
NOTE: All outputs are live regardless of the selected input.
CONNECTING AND OPERATING THE AUTO VOLUME STABILIZER

7
BYPASS AND STANDBY MODES
Bypass Mode
Bypass mode is recommended when listening to music or watching movies which have a wide dynamic
range. To place the GefenTV Auto Volume Stabilizer in Bypass Mode, press the Bypass button on the
front panel. Bypass Mode can also be activated by pressing the BYPASS button on the remote (GTV-
VOLC-IR). When the unit is in Bypass Mode, the Bypass LED will turn red. Dolby Volume™ processing
is now disabled. To enable Dolby Volume™ processing, press the Bypass button on the front panel
again or use the BYPASS button on the IR remote and the LED on the front panel will turn blue.
Standby Mode
Placing the GefenTV Audio Volume Stabilizer in Standby Mode allows the to minimize power (less than
1 W) when not in use. To place the GefenTV Auto Volume Stabilizer in Standby Mode, press and hold
the BYPASS button on the front panel. After a few seconds, the Bypass LED will turn red indicating
that the unit is in Standby Mode. Standby Mode can also be activated by pressing the BYPASS button
on the remote (GTV-VOLC-IR). Once in Standby Mode, press the BYPASS button on the front panel
to power-on the unit. The STANDBY button on the remote can also be use to power-on the unit from
Standby Mode.
7
BYPASS AND STANDBY MODES
Bypass Mode
Bypass mode is recommended when listening to music or watching movies which have a wide dynamic
range. To place the GefenTV Auto Volume Stabilizer in Bypass Mode, press the Bypass button on the
front panel. Bypass Mode can also be activated by pressing the BYPASS button on the remote (GTV-
VOLC-IR). When the unit is in Bypass Mode, the Bypass LED will turn red. Dolby Volume™ processing
is now disabled. To enable Dolby Volume™ processing, press the Bypass button on the front panel
again or use the BYPASS button on the IR remote and the LED on the front panel will turn blue.
Standby Mode
Placing the GefenTV Audio Volume Stabilizer in Standby Mode allows the to minimize power (less than
1 W) when not in use. To place the GefenTV Auto Volume Stabilizer in Standby Mode, press and hold
the BYPASS button on the front panel. After a few seconds, the Bypass LED will turn red indicating
that the unit is in Standby Mode. Standby Mode can also be activated by pressing the BYPASS button
on the remote (GTV-VOLC-IR). Once in Standby Mode, press the BYPASS button on the front panel
to power-on the unit. The STANDBY button on the remote can also be use to power-on the unit from
Standby Mode.

AUTO VOLUME STABILIZER REMOTE DESCRIPTION
8
8
Power On/Off
Power On/Off
Insert Battery (included) underneath
Insert Battery Underneath
Bypass
Bypass
Select Input
Select Input
NOTE:
A battery tab inserted to
protect the battery during
shipping will need to be
removed to allow the unit
to work.
NOTE:
A battery tab inserted to
protect the battery during
shipping will need to be
removed to allow the unit
to work.
AUTO VOLUME STABILIZER REMOTE DESCRIPTION

9
9
SPECIFICATIONS
Input (analog) ..........................................................................................................1x RCA-type connector
Input (digital)................................................................................................ 1x SPDIF RCA-type connector
Input (digital).................................................................................................1x TOSLINK optical connector
Output................................................................................................. .....................1x RCA-type connector
Output................................................................................................. .........................1x S/PDIF connector
Output...........................................................................................................1x TOSLINK optical connector
Power supply.....................................................................................................................................5 V DC
Power Consumption (max).....................................................................................................................5 W
Audio Formats ............................. 2-channel LPCM, Dolby Digital™ 5.1 or 2-channel Stereo Analog audio
Signal-to-Noise Ratio (SNR).............................................................................................................> 90 dB
Frequency Response Deviation ................................................................................................ < +/- 0.5 dB
Distortion .................................................................................... < 0.001% at 0 dBFS or 2 V rms Analog In
Audio In Clipping Level..................................................................................................................2.2 V rms
Input Impedance..................................................................................................................................47 kΩ
Max Output Level ..................................................................................................................1.5 - 1.7 V rms
Output Impedance................................................................................................ ..........................< 500 Ω
Operating Temp ................................................................................................. .......................0° C ~ 40° C
Certifications...................................................................................... .UL (power supply), CE, EMC, RoHS
Input (analog) ..........................................................................................................1x RCA-type connector
Input (digital)................................................................................................ 1x SPDIF RCA-type connector
Input (digital).................................................................................................1x TOSLINK optical connector
Output................................................................................................. .....................1x RCA-type connector
Output................................................................................................. .........................1x S/PDIF connector
Output...........................................................................................................1x TOSLINK optical connector
Power supply.....................................................................................................................................5 V DC
Power Consumption (max).....................................................................................................................5 W
Audio Formats ............................. 2-channel LPCM, Dolby Digital™ 5.1 or 2-channel Stereo Analog audio
Signal-to-Noise Ratio (SNR).............................................................................................................> 90 dB
Frequency Response Deviation ................................................................................................ < +/- 0.5 dB
Distortion .................................................................................... < 0.001% at 0 dBFS or 2 V rms Analog In
Audio In Clipping Level..................................................................................................................2.2 V rms
Input Impedance..................................................................................................................................47 kΩ
Max Output Level ..................................................................................................................1.5 - 1.7 V rms
Output Impedance................................................................................................ ..........................< 500 Ω
Operating Temp ................................................................................................. .......................0° C ~ 40° C
Certifications...................................................................................... .UL (power supply), CE, EMC, RoHS
SPECIFICATIONS