VX-700 - Accuphase
m Decoders for latest audio formats m 32bit high speed floating point
DSP m MDS Plus type D/A converters for all 8 channels m Auto level
adjustment for each speaker m Large 40 character × 2 line display for
smooth function control m Lip-sync function m Total separation of
audio and video sections m Optional line doubler and quadrupler
* Licenses for the various audio decoding formats pending.
The Home Theater Reference
Experience a sound stage of overwhelming
realism. Build a true high-end home theater with this superb A/V Control
Center. 32bit floating point processors operating at high speed perform all
DSP functions. Analog output in 8 channels is created by MDS Plus type
D/A converters. 40 character × 2 line display shows settings and allows quick
access. Automatic speaker level adjustment assures highly accurate results.
The VX-700 is an A/V Control Center
designed specifically for true high-end home
theater applications. It handles both sound
and video with the same unwavering
dedication to quality. Super advanced digital
audio technology developed by Accuphase
is of course in full evidence, and picture quality
also is honed to the highest level. Enjoy home
theater ambience and realism as never
experienced before.
The VX-700 incorporates two high speed
32bit DSP devices operating with software
specially developed by Accuphase to decode
a multitude of audio formats. Internal digitalto-analog conversion is performed by MDS
Plus type D/A converters in all eight channels.
The resulting sound quality is on a par with
the best of high-end pure audio components.
A versatile array of digital inputs and outputs
allows connection of external components
(such as the DF-35 or DG-28/DG-38) after
DSP processing. The supplied microphone
serves to automatically adjust speaker levels.
Other functions accessible through a set of
layered menus include accurate lip-sync
adjustment and a memory for seven audio
setting patterns. The large display makes
navigating the menus easy and intuitive.
The VX-700 is also well equipped to handle
video signals from advanced sources with
ever improving quality. The audio and video
sections of the unit are kept completely
separate to prevent interference and
unwanted interaction. This applies not only
to the electrical circuitry and the power supply
but also to physical construction and rear
panel design.
32bit high speed floating point DSPs
All audio signals input to the VX-700 are
processed in the digital domain using highly
advanced DSP (Digital Signal Processor)
technology. Two ultra fast SHARC processors
from Analog Devices provide the muscle to
handle very large amounts of data with utmost
precision. There is no need to eliminate any signal
data, so that even the finest details can be
faithfully preserved.
Conversion error
Digital input
MDS output
Note the ratio of signal level vs. conversion error
level: in the MSD output, the conversion error is
much smaller in relation to the signal level.
Fig. 2 MDS Plus D/A Converter Principle
Superb picture quality
MDS Plus type D/A converters in all eight
To create the analog audio output signals, the
VX-700 harnesses the best D/A converter
technology available. Called MDS Plus, this
revolutionary converter principle employs multiple
Delta-Sigma converters mounted in a parallel
configuration. When the output signals of the
converters are combined, even minute
conversion imprecisions are canceled out,
resulting in a drastic
improvement of all
major performance
aspects, such as
conversion accuracy,
S/N ratio, dynamic
range, linearity, and
freedom from distortion.
The VX-700 offers six video inputs including
facilities for component and S-Video signals.
The video switcher uses a high-performance
wide-band amplifier with a range extending
beyond 100 MHz, allowing it to handle even
the doubler component of high-definition
broadcast satellite signals.
Intelligent operation modes let you enjoy
surround sound straight away
After connecting input and output devices and
the loudspeakers, you can star t enjoying
surround sound with the default settings simply
by operating the input selector and volume
control. This is made possible by modes for a
2-channel systems (using SRS TruSurround)
and a 5.1-channel system.
Useful lip-sync function
VIDEO SELECTOR VOX-1 (Standard Equipment)
Because the video signal and audio signal pass
through different digital circuits, a time lag can
occur between the mouth movements of the
actors and the soundtrack heard over the
speakers. This is compensated for by delaying
the audio signal timing in relation to the video
signal. The lip-sync function gives you control
over this process by providing an adjustment
range of 20.0 frames in 0.1-frame steps. The
adjustment can be made while watching actual
program material, for utmost flexibility.
Seven audio setting patterns can be stored
in memory, for quick recall, check, or editing.
Fig. 1 VX-700 Block Diagram
Total separation (internal construction and
rear panel) of audio and video sections
prevents any possibility of mutual
Logical menu structure and large 40-character
by 2 line display makes operation a breeze
All settings of the VX-700 can be accessed
through a system of layered menus that appear
on the amplysized display panel. This lets you
quickly establish any desired setting.
m Controls used for making settings are arranged
on a folding panel that retracts into the unit.
m Three rotary jog dial type knobs are assigned
to top-level, medium-level, and low-level items,
with corresponding dialog-type menus.
m Setup has the following four modes to ensure
smooth and quick operation.
Versatile additional functions and features
n Optimized speaker settings with automatic
adjustment function
n Adjustable delay for all channels up to 20 m
in 1-cm steps
n "Small" settings for speakers and subwoofer
Cut-off frequency: 25 settings from 10 - 355 Hz
Cut-off slope: 12/18/24/48 dB/octave, selectable
Display brightness adjustable in five steps
Selectable volume display units: linear or dB
Attenuator level: –6/–20/–30 dB or Mute
Safety lock for all settings
Editable memory and input position names
A/D converter for analog inputs with
selectable sampling frequency: 48/96 kHz
Ready for future version upgrades
RS-232 connector for external control
With the VX-700, you are not "locked in" when it
comes to compatibility and features. When new
functions or support for new audio formats
The built-in RS-232
interface makes the
VX-700 compatible
with integrated control
systems for the home
such as AMX.
[CONFIG] mode: Basic input environment and general settings
[AUDIO] mode: Audio related settings
[VIDEO] mode: Video related settings
[QUICK] mode: On-the-fly settings during playback
n Center speaker allows adjustment of dialog
position height
n Center level adjustment possible during
n Subwoofer level adjustment possible during
n 6-channel level balance adjustment for
analog inputs
n Analog "F" output setting: optimized for 2
subwoofers or 2 surround rear speakers
n Speaker equalizer characteristics
compensation: 2 bands for L/R front
speakers and 6 bands for center/surround/
surround rear speakers allow detailed
become available, you can upgrade the
system software of the unit. This can
be done simply by playing
the Update CD in a
CD player
to the unit.
n Balanced analog output
All 8 analog output channels use
an MDS Plus type D/A converter.
n Supplied remote commander
All functions of the main unit except
for the power switch and ALL
CLEAR are duplicated by the remote
Built-in decoding capability for the latest audio formats
The VX-700 is designed to derive optimum performance from the latest audiovisual sources
in all program genres. Full support for a wide range of audio formats and versatile channel
configurations for various speaker arrangements let you enjoy surround sound at its best.
n Block Diagram
of Audio Section
Surround playback of
multi-channel sources
with 2 speakers
Front left
Front right
(Front left)
(Front right)
(Surround left)
(Surround right)
Standard playback
arrangement for multichannel sources
(Surround rear left)
Front left
Front right
(Surround rear right)
(Subwoofer 2)
Automatic selection of input signal format (when effect mode is set to "Direct")
n Dolby Digital
n Dolby Digital EX
Digital discrete principle with 5.1 entirely separate channels: front L/R,
center, surround L/R, and subwoofer (0.1 channel).
Excellent channel separation assures a realistic sound stage with good
depth, movement definition, and source positioning.
Surround left
This format adds one or two surround rear channels to the Dolby 5.1ch
format, resulting in 6.1 channels (single surround rear speaker) or 7.1
channels (two surround rear speakers). Spatial definition and positioning
are improved, and sound rotation or sound that seems to pass above the
listener's head is possible, for heightened realism.
Surround right
One additional surround
rear speaker
Front left
Front right
n DTS 96/24
This format adds a surround rear channel to the DTS 5.1ch format,
resulting in 6.1 channels. Spatial definition in a 360-degree arc is possible.
DTS 96/24 is the latest surround sound format developed by Digital
Theater Systems, Inc. It combines high picture quality with high-quality
surround sound. Sophisticated compression technology ensures a
frequency range that is equal to 96 kHz/24bit PCM recording, resulting
in surround channels that rival high-end audio only sources.
Surround rear
Matrix 6.1
The surround rear channel information is matrix encoded in the surround
channels. During playback, a matrix processor extracts the surround rear
signal for 6.1ch output.
Discrete 6.1
The three surround channels are recorded as fully discrete full-range
signals. During playback, discrete 6.1ch output is available.
Surround left
Surround right
This format has been adopted in Japan as audio compression format for
digital broadcast satellite programs. Its implementation as "AAC 5.1ch"
provides 5.1 multi-channel sound for video and music sources from
7.1ch Two additional surround
rear speakers
Front left
Front right
n Analog signal input
2-channel or 6-channel analog signals are converted by A/D converters
for internal processing and playback.
n Linear PCM
A format for 2-channel digital sources with sampling frequencies up to
96 kHz.
Surround rear
Surround left
Surround right
Effect mode settings for optimum surround playback
2.1ch - 5.1ch surround sources
[ 2ch virtual surround
Even with only two L/R speakers, this mode makes it
possible to enjoy Dolby Digital, DTS, MPEG-2 AAC or
other multi-channel surround sources having from
2.1 to 5.1 channels. This is suitable for example for
high-end audio systems which have only two large
high-quality speakers, or for occasions where space
restraints make it difficult to install a large number of
2ch audio signal [ 4.0/5.0ch or 6.1ch surround playback
This mode lets you enjoy high-quality surround sound from 2-channel input sources, such as Dolby Surround, DTS,
linear PCM, or from a CD player or another digital or analog source. Playback can use either 4.0/5.0 or 6.1 channels.
n Dolby Pro Logic II
n DTS Neo:6
[Mode: Movie/Music (5.0ch), Pro Logic (4.0ch)]
n SRS Circle Surround II
n SRS TruSurround: Default setting
Downmix playback
In rooms where a center speaker is hard to install due to obstruction by the
screen or other reasons, or in systems without a subwoofer, you can downmix
the signal from 5.1 and higher channel sources to 4.0 channels (no center
speaker and subwoofer), 4.1 channels (no center speaker), or 5.0 channels
(no subwoofer).
The channel level of the center speaker and subwoofer (LFE) can be easily
adjusted using the menus, to achieve optimum surround balance also when
using the downmix mode.
m In the speaker menu, set the center channel or subwoofer channel to NONE (no
speaker connected).
m The input signal in the center channel or subwoofer channel set to NONE will be
mixed to the signal for the front L/R speakers.
[Mode: Cinema/Music]
[Mode: Cinema/Music/Mono (6.1ch)]
(no center speaker/subwoofer)
Front left
Front right
(no center speaker)
Front left
(no subwoofer)
Front right
Front left
Front right
Surround left
Surround right
Surround left
Surround right
Surround left
Surround right
VX-700 playback connection examples
To make input and output connections for the VX-700, you first select the appropriate cables and connectors from the available choices
for audio and video. Using the setup menus, you can then assign any audio input to any video input, so that the input selector will switch
both audio and video at the same time. The VX-700 offers an amazing eight output channels (8 unbalanced, 6 balanced connectors), letting
you drive amplifiers for as many as eight speakers. Enjoy surround sound with unsurpassed flexibility and impact.
n 7 digital audio inputs with editable input names
n Versatile video input configuration designed for high quality
n 2-channel/6-channel analog inputs
Signals from these inputs are converted into digital form by 24bit A/D converters
with 48/96 kHz sampling frequency.
n Maximum 8 analog output channels for no-holds-barred surround
playback systems
2 S-Video connectors and 4 component inputs (BNC x 1, RCA x 1, D5 x 2) are
n Component video outputs as standard equipment
Two sets of component outputs (BNC and RCA) are provided. All video signals from
the S-Video inputs are converted to component signals.
8 unbalanced and 6 balanced connectors are provided.
broadcast satellite
tuner, TV, etc.
RCA component video cable
Optical fiber cable
D-connector cable
Front (L)
Coaxial digital cable
Front (R)
Audio cable
Center (C)
Projector, TV
monitor, etc.
RCA component
video cable
Surround left
Surround right
Surround back
Unbalanced 8 channels, balanced
6 channels
* When using an active subwoofer (with built-in
power amplifier), connect it directly to the "D"
output of the VX-700.
Max. 8 speakers
Using the digital audio inputs and outputs
Connection of DF-35 for front speaker multi-amping
The VX-700 provides a digital output comprising volume data for front left
and right. This lets you connect the Digital Channel Divider DF-35 for multiamping of the front speakers.
Connection of external DAC or DG-28/DG-38 for sound field compensation in a specific channel
Connection examples
m Connect DG-28/DG-38 for sound field compensation in front (L/R),
center (C) and subwoofer (D) channels
m Connect external DAC for surround channels A/B
Power amplifier
To A/B channel
External D/A converter
Audio cables
Coaxial digital cable
Front left (L)
Front right (R)
A/B channel
Center (C)
L/R channel
Coaxial digital cable
To other speakers
(except front L/R)
To power amplifiers
for other speakers
(except front L/R)
Surround back
Surround left
Front left speaker
power amplifier
Audio cables
Surround right
To power amplifiers for
other speakers
(except A/B channel)
Front right speaker
power amplifier
To other speakers
(except A/B channel)
L/R channel
C/D channel
Automatic speaker adjustment function with
supplied microphone
For optimum surround sound playback, it is very
important to carefully adjust the level of each
speaker to fit the listening position. This can be
an arduous process, but the VX-700 makes it
easy. Simply set up the provided measurement
microphone in the intended seating position and
activate the test tone output for highly precise,
fully automatic adjustment.
Option boards
VOX-2 Line Doubler
The VX-700 incorporates a video switcher using a
high-performance amplifier with a frequency response
extending beyond 100 MHz. In the factory default
configuration, the video output section incorporates
the VOX-1 module, but future expansion options such
as VOX-2 and VOX-3 will make it possible to push the
quality level up even further.
Introduction of the VOX-1394 featuring a digital link
conforming to IEEE 1394 is also planned.
m Compatible with High Definition
m 525i ž 525p
m 1125i ž 1125p
m 2-3/2-2 pulldown
m Integrated adjustment test
m Expansion options can be easily installed in dedicated rear
panel slots.
Automatic adjustment start
VOX-3 Line Quadrupler
m Line doubler + scaler compatible with High
Definition video
m 525i ž 525p
m 1125i ž 1125p
m VGA/SVGA/XGA/SXGA/quadrupler (1280 × 960)
m 2-3/2-2 pulldown
m Integrated adjustment test pattern
Measurement in progress
VOX-1394 Digital Input Board
VOX-1394 expansion slot
m IEEE 1394 digital link
Designed for VOX-2/VOX-3
n Front panel
VX-700 Guaranteed Specifications
[Guaranteed specifications measured according to EIA standard RS-490]
Audio section
Pressing tahis button gives
access to the sub panel
n Rear panel
Option board
expansion slot
m Digital inputs
OPTICAL format:
EIAJ CP-1201 compliant
COAXIAL format:
EIAJ CP-1201/AES 3 compliant
BALANCED format: EIAJ CP-1201/AES 3 compliant
Sampling frequencies
32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
(16 to 24 bits, 2-channel PCM)
m Analog inputs
A/D converter: sampling frequency 48/96 kHz, 24bit
m Digital output
COAXIAL format: EIAJ CP-1201/AES 3 compliant
m Frequency response
0.5 –50,000 Hz +0, –3.0 dB
m D/A converter
24bit, MDS principle
m Total harmonic distortion
0.001% (20 - 20,000 Hz)
m Signal-to-noise ratio
113 dB
m Dynamic range
100 dB
m Channel separation
90 dB (20 - 20,000 Hz)
m Output voltage and impedance BALANCED/UNBALANCED:
2.4 V (0 dB), 9.4 V (Maximum), 50 ohms
[ Standard
VOX-1 ]
m Volume control
dB mode:
Minimum, –120.0 dB to +12.0 dB, Maximum
Linear mode: Minimum, 0.5 to 99.5 (0.5-unit steps), Maximum
Speed-sensing rotary control
Video section
m S-Video connectors
Input level/impedance
Frequency response
Y signal: 1 Vp-p/75 ohms
C signal: 0.286 Vp-p/75 ohms
5 Hz - 10 MHz +0, –0.3 dB
m Component video connectors Input/output level/impedance
Y signal: 1 Vp-p/75 ohms
Pb/Cb, Pr/Cr signal: 0.7 Vp-p/75 ohms
Frequency response
DC - 100 MHz +0, -0.3 dB
m Maximum allowable input level At least 1.5 Vp-p
Input selector
Volume control
Power switch
Setup mode selector buttons
Microphone jack
EXIT button
Menu level back () button
Menu level forward (ž) button
Menu setting knobs
K Attenuator button
L Video outputs
(Standard equipment: VOX-1)
M Video inputs
N Analog audio inputs
O Digital audio inputs
P Digital audio outputs (for DF-35)
Q External control connector (RS-232)
R Digital input/output connectors
(for external DAC or DG-28/DG-38)
S Audio outputs (unbalanced x 8, balanced x 6)
T AC inlet0
m Power requirements
AC 120 V / 230 V, 50 / 60 Hz
(Voltage as indicated on rear panel)
m Power Consumption
55 W
m Maximum Dimensions
m Weight
20.1 kg kg (44.3 lbs) net
26.0 kg (57.3 lbs) in shipping carton
Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic", "Surround EX" and the Double-D Symbol
are trademarks of Dolby Laboratories.
"DTS", "DTS Digital Surround", "DTS-ES Extended Surround" and "Neo:6" are trademarks of Digital Theater Systems, Inc.
"Circle Surround II", "TruSurround" and "SRS Sound" are trademarks of SRS Labs, Inc.
The "AAC" logo is a trademark of Dolby Laboratories.
is a registered trademark of ASTRODESIGN, Inc.
475 mm
195 mm
452 mm
Supplied accessories:
m Microphone AM-28
m Microphone cable
m Microphone holder
m Audio cable with plugs (1 m)
m AC power cord
m Remote commander RC-31
0 This product is available in versions for 120/230 V AC. Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
0 The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.
• Specifications and design subject to change without notice for improvements.
PRINTED IN JAPAN 851-0129-00 (AD1)
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