Owner's Manual
EN
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Explanation of Graphical Symbols
The lightning flash with arrowhead symbol
within an equilateral triangle is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to
persons.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER-SERVICEABLE
PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the product.
The above warning is located on the top of the unit.
IMPORTANT SAFETY INSTRUCTIONS
1
2
3
4
5
6
7
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
Do not install near any heat sources such as
radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding
type plug has two blades and a third grounding
prong.The wide blade or the third prong are provided
for your safety. If the provided plug does not fit into
your outlet, consult an electrician for replacement of
the obsolete outlet.
11 Only use attachments/accessories specified by the
manufacturer.
12 Use only with the cart, stand,
tripod, bracket, or table
specified by the manufacturer,
or sold with the apparatus.
When a cart is used, use
caution when moving the cart/
apparatus combination to
avoid injury from tip-over.
8
9
13 Unplug this apparatus during lightning storms or
when unused for long periods of time.
14 Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.
10 Protect the power cord from being walked on or
pinched particularly at plugs, convenience
receptacles, and the point where they exit from the
apparatus.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
(UL60065_03)
FCC INFORMATION (U.S.A.)
not guarantee that interference will not occur in all installations. If
this product is found to be the source of interference, which can be
determined by turning the unit “OFF” and “ON”, please try to elimi-
nate the problem by using one of the following measures:
Relocate either this product or the device that is being affected by
the interference.
Utilize power outlets that are on different branch (circuit breaker or
fuse) circuits or install AC line filter/s.
In the case of radio or TV interference, relocate/reorient the
antenna. If the antenna lead-in is 300 ohm ribbon lead, change the
lead-in to co-axial type cable.
If these corrective measures do not produce satisfactory results,
please contact the local retailer authorized to distribute this type of
product. If you can not locate the appropriate retailer, please con-
tact Yamaha Corporation of America, Electronic Service Division,
6600 Orangethorpe Ave, Buena Park, CA90620
The above statements apply ONLY to those products distributed by
Yamaha Corporation of America or its subsidiaries.
1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!
This product, when installed as indicated in the instructions con-
tained in this manual, meets FCC requirements. Modifications not
expressly approved by Yamaha may void your authority, granted by
the FCC, to use the product.
2. IMPORTANT:When connecting this product to accessories and/
or another product use only high quality shielded cables. Cable/s
supplied with this product MUST be used. Follow all installation
instructions. Failure to follow instructions could void your FCC
authorization to use this product in the USA.
3. NOTE:This product has been tested and found to comply with the
requirements listed in FCC Regulations, Part 15 for Class “B” digital
devices. Compliance with these requirements provides a reason-
able level of assurance that your use of this product in a residential
environment will not result in harmful interference with other elec-
tronic devices. This equipment generates/uses radio frequencies
and, if not installed and used according to the instructions found in
the users manual, may cause interference harmful to the operation
of other electronic devices. Compliance with FCC regulations does
* This applies only to products distributed by YAMAHA CORPORATION OF AMERICA.
(class B)
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PRECAUTIONS
PLEASE READ CAREFULLY BEFORE PROCEEDING
* Please keep this manual in a safe place for future reference.
WARNING
Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical
shock, short-circuiting, damages, fire or other hazards. These precautions include, but are not limited to, the following:
Power supply/Power cord
Water warning
• Only use the voltage specified as correct for the device. The required voltage is
printed on the name plate of the device.
• Do not expose the device to dripping or splashing, use it near water or in damp
or wet conditions, or place containers on it containing liquids which might spill
into any openings. If any liquid such as water seeps into the device, turn off the
power immediately and unplug the power cord from the AC outlet. Then have
the device inspected by qualified Yamaha service personnel.
• Use only the included power cord.
If you intend to use the device in an area other than in the one you purchased,
the included power cord may not be compatible. Please check with your Yamaha
dealer.
• Never insert or remove an electric plug with wet hands.
• Do not place the power cord near heat sources such as heaters or radiators, and
do not excessively bend or otherwise damage the cord, place heavy objects on
it, or place it in a position where anyone could walk on, trip over, or roll anything
over it.
If you notice any abnormality
• If the power cord or plug becomes frayed or damaged, or if there is a sudden
loss of sound during use of the device, or if any unusual smells or smoke
should appear to be caused by it, immediately turn off the power switch,
disconnect the electric plug from the outlet, and have the device inspected by
qualified Yamaha service personnel.
• Be sure to connect to an appropriate outlet with a protective grounding
connection. Improper grounding can result in electrical shock.
Do not open
• If this device should be dropped or damaged, immediately turn off the power
switch, disconnect the electric plug from the outlet, and have the device
inspected by qualified Yamaha service personnel.
• Do not open the device or attempt to disassemble the internal parts or modify
them in any way. The device contains no user-serviceable parts. If it should
appear to be malfunctioning, discontinue use immediately and have it inspected
by qualified Yamaha service personnel.
CAUTION
Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage
to the device or other property. These precautions include, but are not limited to, the following:
• Do not expose the device to excessive dust or vibrations, or extreme cold or heat
(such as in direct sunlight, near a heater, or in a car during the day) to prevent
the possibility of panel disfiguration or damage to the internal components.
Power supply/Power cord
• Remove the electric plug from the outlet when the device is not to be used for
extended periods of time, or during electrical storms.
• Do not place the device in an unstable position where it might accidentally fall
over.
• When removing the electric plug from the device or an outlet, always hold the
plug itself and not the cord. Pulling by the cord can damage it.
• Do not block the vents. This device has ventilation holes at the sides to prevent
the internal temperature from becoming too high. In particular, do not place the
device on its side or upside down. Inadequate ventilation can result in
overheating, possibly causing damage to the device(s), or even fire.
Location
• Before moving the device, remove all connected cables.
• Do not use the device in the vicinity of a TV, radio, stereo equipment, mobile
phone, or other electric devices. Doing so may result in noise, both in the device
itself and in the TV or radio next to it.
• When setting up the devices, make sure that the power switch can be easily
turned ON/OFF. If some trouble or malfunction occurs, immediately turn off the
power switch and disconnect the plug from the outlet.
• If the device is mounted in an EIA standard rack, carefully read the section
overheating, possibly causing damage to the device(s), malfunction, or even
fire.
• Avoid setting all equalizer controls and faders to their maximum. Depending on
the condition of the connected devices, doing so may cause feedback and may
damage the speakers.
(5)-6 1/2
IMX644 Owner’s Manual 3
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Connections
Handling caution
• Before connecting the device to other devices, turn off the power for all devices.
Before turning the power on or off for all devices, set all volume levels to
minimum.
• When turning on the AC power in your audio system, always turn on the power
amplifier LAST, to avoid speaker damage. When turning the power off, the power
amplifier should be turned off FIRST for the same reason.
• The included power cable has a three-conductor plug, so if the AC outlet is
grounded the IMX644 will be grounded appropriately.
• Condensation can occur in the device due to rapid, drastic changes in ambient
temperature – when the device is moved from one location to another, or air
conditioning is turned on or off, for example. Using the device while
condensation is present can cause damage. If there is reason to believe that
condensation might have occurred, leave the device for several hours without
turning on the power until the condensation has completely dried out.
• Do not insert your fingers or hands in any gaps or openings on the device
(ports, etc.).
• Avoid inserting or dropping foreign objects (paper, plastic, metal, etc.) into any
gaps or openings on the device (ports, etc.) If this happens, turn off the power
immediately and unplug the power cord from the AC outlet. Then have the
device inspected by qualified Yamaha service personnel.
• Do not apply oil, grease, or contact cleaner to the faders. Doing so may cause
problems with electrical contact or fader motion.
• Do not rest your weight on the device or place heavy objects on it, and avoid use
excessive force on the buttons, switches or connectors.
Yamaha cannot be held responsible for damage caused by improper use or modifications to the device, or data that is lost or destroyed.
Always turn the power off when the device is not in use.
The performance of components with moving contacts, such as switches, volume controls, and connectors, deteriorates over time. Consult qualified Yamaha service
personnel about replacing defective components.
European models
Purchaser/User Information specified in EN55103-1 and EN55103-2.
Inrush Current: 10 A
Conforms to Environments: E1, E2 E3 and E4
SPECIAL NOTICES
• The illustrations as shown in this manual are for instructional purposes only, and may appear somewhat different from those on your device.
• The company names and product names in this manual are the trademarks or registered trademarks of their respective companies.
• Specifications and descriptions in this owner’s manual are for information purposes only. Yamaha Corp. reserves the right to change or modify products or specifications
at any time without prior notice. Since specifications, equipment or options may not be the same in every locale, please check with your Yamaha dealer.
IMPORTANT NOTICE FOR THE UNITED KINGDOM
COMPLIANCE INFORMATION STATEMENT
(DECLARATION OF CONFORMITY PROCEDURE)
Connecting the Plug and Cord
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT. The wires in this mains lead are coloured in accor-
dance with the following code:
Responsible Party : Yamaha Corporation of America
Address : 6600 Orangethorpe Ave., Buena Park, Calif. 90620
Telephone : 714-522-9011
Type of Equipment : DIGITAL INSTALLATION MIXER
Model Name : IMX644
GREEN-AND-YELLOW
BLUE
:
:
:
EARTH
NEUTRAL
LIVE
BROWN
As the colours of the wires in the mains lead of this apparatus may
not correspond with the coloured markings identifying the terminals
in your plug proceed as follows:
The wire which is coloured GREEN-and-YELLOW must be con-
nected to the terminal in the plug which is marked by the letter E or
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1) this device may not cause harmful interference, and
2) this device must accept any interference received including interfer-
ence that may cause undesired operation.
by the safety earth symbol
YELLOW.
or colored GREEN or GREEN-and-
See user manual instructions if interference to radio reception is sus-
pected.
The wire which is coloured BLUE must be connected to the terminal
which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the termi-
nal which is marked with the letter L or coloured RED.
* This applies only to products distributed by
YAMAHA CORPORATION OF AMERICA.
(FCC DoC)
• This applies only to products distributed by Yamaha Music U.K. Ltd.
(3 wires)
(5)-6 2/2
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Table of contents
IMX644 Owner’s Manual 5
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Introduction
Thank you for purchasing the Yamaha IMX644 Digital Installation Mixer. In order to take full
advantage of the IMX644 functionality and to ensure trouble-free operation, please read this
owner’s manual carefully before use. After you have read the manual, keep it in a safe place
for reference when needed.
Features
■ Versatile Input/Output Configuration
■ Powerful Mixing Features
The IMX644 features an input/output configuration that is ideal
for a wide range of applications: six mono inputs, four stereo in-
puts, two stereo outputs, two mono outputs, and one dedicated
stereo output for recording.
•
Parametric EQ
Parametric equalization is provided on all input channels: 3-
band EQ on mono input channels, and 2-band EQ on stereo
input channels.
6-band EQ is provided on all outputs except the recording
output.
■ 16 Memories
Up to 16 sets of mixer settings can be stored in memory and in-
stantly recalled as required. Four of the memories can be directly
recalled via front-panel MEMORY [A] through [D] buttons.
•
Feedback Suppressor
Feedback suppression is provided on all six mono input
channels.
The Feedback Suppressor provides two stages of feedback
prevention: static filters that can be set in advance, and
dynamic filters that self-adjust in real time to control feed-
back.
■ Optical Digital I/O
Connecting to compatible devices (CD and DVD players, for ex-
ample) via the optical digital interface allows accurate signal
transfer with no loss of signal quality. The digital input features
a built-in sample rate converter, so there is no need for word
clock synchronization.
•
Priority for Specified Voice or Music Sources
The Priority Ducker automatically “ducks” (reduces the vol-
ume of) the background when a signal is applied to a speci-
fied mono input channel, making announcements stand out
for greater intelligibility. All stereo inputs assigned to the
same output channel are reduced to a specified level when
priority input is detected.
Music Override gives priority to a music source applied to a
specified stereo input channel. All other stereo inputs
assigned to the same output channel are muted when prior-
ity input is detected.
•
Delay
Precise delays can be applied to all outputs to allow time
alignment for a solid sonic image with clear imaging and
optimum overall sound quality throughout the listening
area.
Accessories
•
•
•
•
AC power cord
Rubber feet x 4
Euroblock plug (3P) x 12
Owner’s Manual (this document)
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Introduction
Precautions for Rack
Mounting
Before Operation
■ Connecting the AC Power Cable
This unit will operate stably in an environmental temperature of
0–40˚C. If you install this device together with multiple units of
the same device or other devices in an EIA standard rack, the
heat produced by the various devices may raise the ambient tem-
perature inside the rack, resulting in inefficient performance. To
ensure that the heat produced by this device can be dissipated ap-
propriately, please ensure the following conditions when rack-
mounting it.
CAUTION
•
Before connecting the power cable, make sure that the power
switches of all devices are turned OFF.
First connect the supplied power cable to the [AC IN] socket on
the rear panel of the IMX644, then connect the AC plug to an ap-
propriate AC power outlet (make sure the local supply voltage
matches the rated AC voltage of the unit).
•
If multiple units are mounted in the same rack, leave a 1U
rack space between every two units. Also either leave the
open spaces uncovered or install appropriate ventilating
panels to minimize the possibility of heat buildup.
When mounting this device together with other heat-pro-
ducing equipment such as power amplifiers, leave 1U or
more space between it and other devices. Install a ventila-
tion panel in this vacant space or leave it open to ensure ade-
quate cooling.
■ Powering ON or OFF
CAUTION
•
•
To prevent loud noise bursts from the speakers when power-
ing up the system, turn devices ON in the following order:
audio sources (microphones, CD players, etc.), IMX644, and
finally power amplifiers. Reverse this order when turning the
system off.
•
To ensure sufficient airflow, leave the rear of the rack open
and position it at least 10 centimeters from walls or other
surfaces. If the rear of the rack can’t be left open, install a
commercially available fan or similar ventilating option to
secure sufficient airflow. If you’ve installed a fan kit, there
may be cases in which closing the rear of the rack will pro-
duce a greater cooling effect. Refer to the rack and/or fan
unit manual for details.
1
2
Press the [ON] end of the [POWER] switch to
turn the unit ON.
Press the [OFF] end of the [POWER] switch to
turn the unit OFF.
CAUTION
•
Rapidly turning the unit ON and OFF in succession can
cause it to malfunction. After turning the unit OFF, wait for
more than 6 seconds before turning it ON again.
Acquiring the IMX644
Manager Software and
Manuals
The information in this manual deals primarily with setting up
and operating the IMX644 hardware.
For detailed parameter control the IMX644 Manager software
application is required. The IMX644 Manager software and
manuals can be downloaded from Yamaha’s professional audio
website (URL below).
The available IMX644 Manager documents are as follows:
•
IMX644 Manager Owner’s Manual
This manual contains detailed information relating to the
IMX644 unit and IMX644 Manager software.
IMX644 Owner’s Manual 7
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Controls and Functions
Front Panel
1
3
6
9
)
@
2 4
5
7
8
!
#
1 [LOCK] Switch and Indicator
2 [USB] Connector
The [LOCK] switch can be used to “lock” the panel level knobs
(5, 8, and 11), making them inoperable and preventing acciden-
tal changes. After setting levels and/or recalling a memory as re-
quired, press the [LOCK] switch with a thin object (such as the
tip of a pen) to prevent further changes to the level settings. The
LOCK indicator lights red when the controls are locked.
Press the [LOCK] switch a second time to unlock the controls
and allow normal operation of the level knobs.
The computer running the IMX644 Manager application can be
connected to the IMX644 via this connector. The [USB] connec-
tor cannot be used at the same time as the rear-panel [REMOTE]
connector.
Precautions when using the [USB] connector
When connecting the computer to the [USB] connector,
make sure to observe the following points. Failing to do so
risks freezing the computer and corrupting or losing the data.
If the computer or the device freezes, restart the application
software or the computer OS, or turn the power to the device
off then on again.
NOTE
•
•
The LOCK buttons in the IMX644 Manager application
INPUT display can be used to enable independent operation
of each panel level control.
If the settings of the level knobs have been increased since
the [LOCK] switch was engaged, the settings at the time the
[LOCK] switch was engaged will be retained when it is
disengaged. In order to increase a level setting after
disengaging the [LOCK] switch in such a case it is necessary
to lower the setting of the knob to the point at which it was
locked, and then raise the level as required.
CAUTION
•
•
Use an AB type USB cable of less than about 3 meters.
Before connecting the computer to the [USB] connector,
exit from any power-saving mode of the computer (such
as suspend, sleep, standby).
•
•
When the power is turned ON, the MEMORY number that
was active when the power was turned OFF is recalled. Save
the memory using the IMX644 Manager application before
engaging the [LOCK] switch.
The LOCK function is temporarily disengaged when the
IMX644 Manager application goes online. The LOCK
function will be re-engaged if the unit is restarted, so don’t
operate the [LOCK] switch while the IMX644 Manager is
online.
•
•
Before turning on the power to the device, connect the
computer to the [USB] connector.
Execute the following before turning the power to the
device on/off or plugging/unplugging the USB cable to/
from the [USB] connector.
-
-
Quit any open application software on the computer.
Make sure that data is not being transmitted from the
device.
•
While the computer is connected to the device, you
should wait for six seconds or more between these
operations: (1) when turning the power of the device off
then on again, or (2) when alternately connecting/
disconnecting the USB cable.
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Controls and Functions
■ MONO INPUT Section
■ OUTPUT Section
3 Matrix Indicators
9 Level Meter
The outputs to which each mono input are assigned are displayed
by orange indicators.
Displays the levels of the signal being output via OUTPUT 1 and
2.
If the PEAK indicator lights the output level is too high. If exces-
sively high output levels are indicated, reduce the input and/or
output levels as required.
4 [SIGNAL/PEAK] Indicators
These indicators light green when a signal is detected at the cor-
responding mono input.
NOTE
The [SIGNAL/PEAK] indicators also light red to indicate exces-
sive input level at the corresponding input. If excessive input
level is indicated either reduce the output level of the connected
source, or reduce the IMX644 input sensitivity via the appropri-
ate rear-panel [PAD] switch or by reducing the [INPUT GAIN]
setting via the IMX644 Manager application.
•
The signals OUTPUT 1 and 2 are both stereo pairs, so each
level meter indicates the output level of the mixed L and R
signal.
) [SIGNAL/PEAK] Indicators
These indicators light green when a signal is detected at
OUTPUT 3 and 4.
The [SIGNAL/PEAK] indicators also light red to indicate exces-
sive output level at the corresponding output. If excessive output
level is indicated, reduce the input level or output level.
5 Level Knobs
These knobs adjust the input level of the corresponding mono
channels.
! Level Knobs
■ STEREO INPUT Section
These knobs adjust the output level from the corresponding out-
put channels.
6 Matrix Indicators
The outputs to which each stereo input are assigned are dis-
played by orange indicators.
@ MEMORY [A] – [D] Buttons
•
Recalling Memories
7 [SIGNAL/PEAK] Indicators
To recall a memory press and hold one of the MEMORY
buttons for about 2 seconds – the button’s indicator will
light and the mix settings assigned to that memory will be
recalled.
Settings are stored in the IMX644 memories via the
IMX644 Manager application. Memories A through D all
contain the same settings when the unit is initially shipped
from the factory.
These indicators light green when a signal is detected at the cor-
responding stereo input.
The [SIGNAL/PEAK] indicators also light red to indicate exces-
sive input level at the corresponding input. If excessive input
level is indicated, reduce the output level of the connected
source.
NOTE
•
Switching Modes
•
The [SIGNAL/PEAK] indicator may light red when certain
types of signals are received via the OPTICAL input, but in
such cases the signal is within range and no further adjust-
ments are required.
To start the unit in IMX644 Manager mode, hold the MEM-
ORY [D] button while turning the [POWER] switch ON.
The unit starts up in the “normal” mode if the power is
turned on while the MEMORY [D] button is not held.
8 Level Knobs
This mode allows communication with
These knobs adjust the input level of the corresponding stereo
channels.
IMX644
Manager Mode
the IMX644 application. Communica-
tion with AMX and similar external
controllers cannot occur in this mode.
This is the unit’s normal operating
mode. Communication with AMX and
similar external controllers is also pos-
sible in this mode. Communication
with the IMX644 Manager application
is not possible in this mode.
Normal Mode
# [POWER] Switch & Indicator
Turns power to the unit ON or OFF. The indicator lights green
when the power is ON.
NOTE
•
Since the level settings for each channel are stored in the
IMX644 unit itself, be sure that the IMX644 Manager applica-
tion is online when setting up the memories.
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Controls and Functions
Rear Panel
NOTE
•
Refer to “Connectors and Cables” on page 13 for details on connectors and cables for use with the IMX644.
1
3
5
7
8
9
2
4
6
)
1 [AC IN] Connector
■ STEREO INPUT Section
Connect the supplied AC cable here.
First connect the AC cable to the IMX644, then plug it into an
appropriate AC outlet.
5 L/R Connectors 1, 2, 3, 4A, and OPTICAL 4B
The output from CD players and other stereo line-level sources
can be connected to these stereo inputs.
2 Earth Screw
NOTE
For maximum safety, please earth the unit properly. The sup-
plied AC power cable is a 3-wire type, so if the AC outlet used
is properly earthed the IMX644 will be earthed as well. Hum and
interference may by further reduced in some cases by also con-
necting the earth screw to an earth point.
•
The 4A (L/R) connectors and 4B (OPTICAL) connector can-
not be used simultaneously.
■ REC OUT Section
6 L/R Connectors A and OPTICAL B
3 [REMOTE] Connector
A CD recorder or other stereo recorder can be connected here.
This RS-232C connector allows communication with a comput-
er running the IMX644 Manager application or external control-
lers.
The [REMOTE] connector cannot be used simultaneously with
the front-panel [USB] connector. If both connectors are connect-
ed, the front-panel [USB] connector takes priority.
NOTE
•
A feedback loop can occur if a CD recorder or similar device
is connected to both a STEREO INPUT and the REC OUT
connectors. In such cases use the IMX644 Manager applica-
tion MATRIX controls to turn the OUTPUT channel to REC
OUT connector assignment off.
4 [GPI] Connector
■ MONO INPUT Section
This 25-pin D-sub GPI (General Purpose Interface) connector
provides eight input ports and eight output ports for a variety of
control signals, plus one dedicated output port that indicates the
unit’s power ON/OFF status.
7 Euroblock Connectors
Microphones and similar mono sources can be connected to
these balanced input connectors. High-quality head amplifiers
Euroblock connectors.
8 [PAD] Switches
When ON, input to the corresponding mono channel is attenuat-
ed by 34 dB. The pads are ideal for matching input sensitivity to
the output from wireless microphone tuners and similar high-
output source devices.
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Controls and Functions
9 [+48V] Switch
When ON, 48V phantom power is applied to the corresponding
mono input. Turn the [+48V] switch ON for channels to which
phantom-powered condenser microphones or other devices that
require phantom power are connected.
CAUTION
•
•
Make sure that phantom power is turned OFF unless it is
needed.
When turning phantom power ON, make sure that no
equipment other than phantom-powered devices such
condenser microphones are connected to the corresponding
MONO INPUT connectors. Applying phantom power to a
device that does not require phantom power can damage the
device.
•
•
Do not connect or disconnect a device to a MONO INPUT
while phantom power is applied. Doing so can damage the
connected device and/or the unit itself.
Make sure that the system’s power amplifiers and/or powered
speakers are turned OFF while turning phantom power ON
or OFF to prevent damage to the speakers. We also
recommend setting all level controls to minimum level. If
these measures are not observed sudden high-level noise
bursts can potentially damage equipment and even the
hearing of people in the area.
■ OUTPUT Section
) Euroblock Connectors
These balanced output connectors are for connection to power
amplifiers and other output devices.
OUTPUT 1 and 2 are stereo outputs. The A connector outputs
the left-channel signal, and the B connector outputs the right-
channel signal. OUTPUT 1 and 2 can also be assigned for mono
output via the IMX644 Manager application.
tions on connecting to the Euroblock connectors.
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Connections
System Example
Computer
Cassette deck
Microphone
MD player
Wireless microphone
CD recorder
Wireless tuner
AMX or similar external
controller
1
5
2
6
3
7
4
8
Power amplifier
External control input/
output device
Zone 1
speakers
Power amplifier
Zone 3 speakers
Zone 2
speakers
Zone 4 speakers
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Connections
Euroblock Plug Connection
Use the included Euroblock plug (3P) to make connections to the
[MONO INPUT] and [OUTPUT] connectors.
Connectors and Cables
■ [MONO INPUT] and [OUTPUT] Con-
● Cable preparation
nectors (3-pin Euroblock)
•
To prepare the cable for
attachment to a Eurob-
lock connector, strip the
wire as shown in the
illustration, and use
approx. 7 mm
Connect external microphones, amplifiers and other devices to
the rear-panel [MONO INPUT] and [OUTPUT] connectors via
cables fitted with the supplied 3-pin Euroblock plugs.
Follow the procedure outlined in this section to attach the Eurob-
lock plugs to the appropriate cables.
stranded wire to make
connections. With a Euroblock connection, the stranded
wire may be prone to breakage because of metal fatigue
due to the weight of the cable or due to vibration. When
rack-mounting your equipment, use a lacing bar when
possible to bundle and fasten the cables.
Euroblock Pin Assignments
Signal
name
Pin No.
1
2
3
HOT
COLD
GND
1
2
3
•
If cables will be fre-
quently connected and
disconnected, as in the
case of a portable instal-
lation, we recommend
that you use ferrules with
insulation sleeves. Use a
ferrule whose conductor
1.6 mm or less
approx. 7 mm
Use balanced lines to connect microphones and similar sources
to the [MONO INPUT] connectors. Wire balanced cables as
shown in the diagram below.
XLR-3-11C (or equivalent)
portion has an external diameter of 1.6 mm or less, and a
length of approximately 7 mm (such as the AI0,5-6WH
made by the Phoenix Contact corporation).
1
2
1
3
2
CAUTION
3
•
If you use stranded wire, do not tin (plate with solder) the
exposed end.
When an amplifier to be connected to the OUTPUT connector
has balanced XLR type inputs, wire the connection cable as
shown in the diagram below.
1
Loosen the terminal screws.
NOTE
XLR-3-12C (or equivalent)
•
A “minus” type screwdriver with a blade width of approxi-
mately 3 millimeters is recommended for Euroblock connec-
tor attachment.
1
2
1
3
3mm
2
3
Loosen
Slotted screwdriver
Terminal screw
Euroblock plug
2
Insert the cables.
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Connections
■ [GPI] Connector (25-pin D-sub)
External GPI (General Purpose Interface) control devices can be
connected to this connector to allow input and output of remote
control signals.
The IMX644 GPI port has eight inputs and eight outputs, plus a
dedicated “POWER MONITOR” output that indicates the unit’s
ON/OFF status.
3
4
Securely tighten the terminal screws.
Pull the cables (not too strongly) to confirm that they are
securely connected.
Connect the Euroblock plug to the IMX644
Euroblock connector.
The input pins are normally left open. Shorting an input pin to
ground (GND) recalls the corresponding memory number.
The output pins are open-collector outputs that deliver a maxi-
mum output of +35 volts, with a maximum current capability of
30 mA per port.
For the POWER MONITOR outputs, pins 24 and 25 are
“closed” (shorted) when the power is ON. The POWER MONI-
TOR COLD pin (pin 25) is internally connected to the GND
pins.
The IMX644 Manager application can be used for parameter as-
signment.
Connector Pin Assignments
13121110 9
8
7
6
5
4
3
2
1
■ [REMOTE] Connector (RS-232C)
Connect to this connector when controlling the IMX644 from
the IMX644 Manager application or an external AMX/Crestron
controller. Use an RS-232C cross cable for connection.
252423222120191817161514
Pin No.
Signal name
GND
Pin No.
Signal name
Unused
RxD
Connector Pin
Assignments
1
1
2
3
4
5
6
7
8
9
2
GND
1
2
3
4
5
3
INPUT 1
TxD
4
INPUT 2
DTR
5
INPUT 3
GND
6
7
8
9
6
INPUT 4
DSR
7
INPUT 5
RTS
8
INPUT 6
CTS
9
INPUT 7
Unused
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
INPUT 8
An external AMX or similar controller can be used to send com-
mands to the IMX644 to recall memories and adjust the level of
available remote control commands.
GND
GND
GND
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
OUTPUT 6
OUTPUT 7
OUTPUT 8
GND
GND
POWER MONITOR HOT
POWER MONITOR COLD
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Mix Functions
mix functions that can be controlled by the IMX644 Manager application are discussed in this section. For operating details refer to the
IMX644 Manager Owner’s Manual.
To enable communication with the IMX644 Manager application, press and hold the IMX644 MEMORY [D] button while turning the
[POWER] switch ON.
■ MATRIX
The MATRIX allows individual input channels to be assigned to
any of the mixer’s output channels. The assignments are shown
Input Channels
on the display. The initial default settings are: send assignments
■ GAIN
to all output channels are ON, with only OUT1 assigned to the
The gain of the mono input channel head amplifiers can be indi-
REC OUT channel. The send levels from individual mono input
vidually adjusted and displayed.
channels to the output channels can also be adjusted and dis-
Parameter
Range
Initial value
-35dB
played.
GAIN (PAD is off)
GAIN (PAD is ON)
-54dB – -30dB
-20dB – +4dB
Parameter
SEND LEVEL
Range
Initial value
-1dB
-∞ – 0dB
0dB
■ INPUT EQ
The parameters of the input channel equalizers can be individu-
ally adjusted and displayed. The parameters available for each
channel are listed below.
■ Temporary Matrix Assignment
Changes
The panel controls can be used to temporarily turn on the output
assignments of individual input channels, as follows.
MONO INPUT CHANNEL
1
2
Set all OUTPUT channel level controls to “0”.
Parameter
Range
Initial value
0dB
G
-15dB – +15dB
2kHz – 18kHz
-15dB – +15dB
40Hz – 18kHz
0.5 – 12.0
Set the level of the INPUT channel to be
assigned to “10”.
HIGH
MID
F
G
F
10kHz
0dB
3
Press and hold the MEMORY button correspond-
2kHz
ing to the output channel you want to assign the
input channel to for longer than 3 seconds while
rotating the INPUT channel level control towards
“0”.
Q
G
F
0.7
-15dB – +15dB
40Hz – 2kHz
0dB
LOW
100Hz
Button
Output channel
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
STEREO INPUT CHANNEL
A
B
C
D
Parameter
Range
Initial value
0dB
G
-15dB – +15dB
2kHz – 18kHz
-15dB – +15dB
40Hz – 2kHz
HIGH
LOW
F
G
F
10kHz
0dB
4
5
The corresponding MATRIX indicator will light.
Repeat for other channels as required.
100Hz
NOTE
•
Output assignments made in this way are only temporary and
will not be saved to memory. If power to the unit is turned
OFF and then ON again the memorized settings prior to
making the changes as described above will be recalled.
IMX644 Owner’s Manual 15
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Mix Functions
■ Feedback Suppressor
7
Simultaneously press and hold MEMORY but-
The Feedback Suppressor effectively controls feedback by iden-
tifying the feedback frequencies that will occur naturally as a re-
sult of the combined acoustic and electrical characteristics of the
sound system within the acoustic space in which it is used. The
Feedback Suppressor includes static filters that provide mea-
surement and filtering for specified channels, and dynamic fil-
ters that monitor the condition of specified MONO INPUT
channels and automatically suppress feedback as it occurs.
Static filter measurements can be made either via the IMX644
Manager application or the IMX644 unit itself. Measurement
from the IMX644 itself is described in “Front Panel Static Filter
Measurement” below.
tons [A], [C], and [D] for longer than two sec-
onds.The MEMORY [A], [C], and [D] button
indicators will light and static filter measure-
ment will begin.When the measurement process
has finished the static filter will be set according
to the results and the MEMORY button indica-
tors will return to their status prior to the mea-
surement.
NOTE
•
•
If all four MEMORY button indicators light – [A], [B], [C], and
[D] – an error has occurred during measurement. To prevent
damage to the equipment the measurement will be aborted
and the erroneous data discarded. If this occurs try changing
the orientation of the microphone and speakers, lower the
amplifier output, then repeat the procedure from step 1
above.
Static filter measurement may not be successful if the overall
level is too high or the microphone is too close to one of the
speakers.
With the initial default settings the static filters are inactive,
while the dynamic filters are ON for all MONO INPUT chan-
nels.
NOTE
•
The initial default setting is Feedback Suppressor ON. Even
though the static filters are inactive, the dynamic filters are
still operational so be sure to turn the Feedback Suppressor
OFF before using sine waves or test tones to test or calibrate
the system.
■ Priority Ducker
When a signal is applied to the specified MONO INPUT channel
the level of all STEREO INPUT signals assigned to the same
output are reduced to allow announcements made via the MONO
INPUT channel to stand out clearly from background music or
other program material, for example. When input to the specified
MONO INPUT channel ceases the level of the other “ducked”
channels returns to normal.
•
Feedback Suppressor settings can be stored in the unit’s 16
memories.
Front Panel Static Filter Measurement
To ensure optimum feedback suppression be sure to perform the
measurements under the same conditions that will prevail during
actual operation (microphone and speaker positions, etc.).
The initial default setting is OFF for all channels.
Both the amount of attenuation and the time it takes to return to
normal level can be programmed as required.
1
2
Set the OUTPUT channel 1 through 4 level con-
trols to 3 o’clock.
Set the level control of the MONO INPUT to
Parameter
Mute Level
Release Time
Range
Initial value
-20dB
which the microphone that is to be used for
measurement is connected to 3 o’clock.
-30.2dB – 0dB
0.0 – 6.0sec
2.0sec
3
4
Set up the microphone at least 5 meters away
from the speakers.
■ Music Override
When a signal is applied to the specified STEREO INPUT chan-
nel all other STEREO INPUT channels assigned to the same out-
put are automatically faded out and muted. When input to the
specified STEREO INPUT channel ceases the level of the other
muted channels fades in and returns to normal.
The initial default setting is OFF for all channels.
The time it takes to fade-in to normal level can be programmed
as required.
Adjust the output level of the power amplifier.
While speaking or singing into the microphone gradually
raise the output level of the power amplifier to the level
that will be used in actual operation. Also clap your hands
near the microphone to make sure that feedback does not
occur.
NOTE
5
6
Set the level control of the MONO INPUT channel
•
If Music Override is ON for more than one channel, the low-
est-numbered channel takes priority.
to which the microphone that is to be used for
measurement is connected to “0”.
Parameter
Range
Initial value
Make sure the area being measured is silent.
Release Time
0.0 – 6.0sec
4.0sec
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Mix Functions
■ BALANCE
Adjusts the A/B level balance for OUTPUT channels 1 and 2.
Output Channels
Parameter
BALANCE
Range
Initial value
■ OUTPUT EQ
0dB – 20.1dB
0dB
The parameters of the independent 6-band parametric equalizers
provided for OUTPUT channels 1 through 4 can be adjusted and
displayed. The following EQ types can be specified for each
band.
■ Output Format (STEREO/MONO)
Specifies whether OUTPUT channels 1 and 2 deliver a STEREO
or MONO output signal. When [STEREO] is selected the left
channel signal is delivered via the A connector and the right-
channel signal is delivered via the B connector. The initial de-
fault setting is [STEREO].
Type
Parameter
Range
F
G
40Hz – 18kHz
-15dB – +15dB
0.5 – 12.0
PEQ (Peaking EQ)
Q
F
40Hz – 18kHz
12dB/oct (Fixed)
0.7 (Fixed)
HPF (High Pass Filter)
LPF (Low Pass Filter)
Slope
Q
Others
F
40Hz – 18kHz
12dB/oct (Fixed)
0.7 (Fixed)
Slope
Q
■ GPI (General Purpose Interface)
•
GPI Input
F
40Hz – 18kHz
-15dB – +15dB
40Hz – 18kHz
-15dB – +15dB
Applying an appropriate input to one of the rear-panel GPI
input ports recalls the assigned memory. Individual assign-
ments can be made for each input port.
L. Shelf (Low Shelving EQ)
H.Shelf (High Shelving EQ)
G
F
G
•
GPI Output
Recalling a memory causes a pre-assigned combination of
ON and OFF outputs to appear at the GPI output ports. The
ON/OFF combinations can be independently assigned for
each memory.
The initial default settings when the P.EQ type is selected are as
follows.
Parameter
Initial value
The initial default assignments for all memories are all out-
puts OFF.
Q
0.7 (for all frequency parameters)
F1
F2
F3
F4
F5
F6
40Hz
100Hz
500Hz
2kHz
■ MEMORY
Up to 16 sets of parameters can be memorized. Of those, four
can be assigned for direct recall from the front-panel MEMORY
[A] through [D] buttons. For access to five or more memories at
a time either use the IMX644 Manager application, or a suitable
external controller connected to the GPI interface.
5kHz
10kHz
NOTE
■ DELAY
Sets the output channel delay time.
One of the main uses for this feature is to delay the output to sub
speakers slightly compared to the main speakers, to create a solid
frontal sonic image.
•
•
MEMORY buttons [A] through [D] are initially set up to recall
the same data.
Since the level settings for each channel are stored in the
IMX644 unit itself, be sure that the IMX644 Manager
application is online when setting up the memories.
Parameter
DELAY
Range
Initial value
0 – 300msec
0msec
IMX644 Owner’s Manual 17
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Appendix
Troubleshooting
Symptom
Possible Cause
Solution
The power cable is not prop-
erly connected.
After connecting the power cable to the connector on the rear panel
of the IMX644, plug the cable into an appropriate AC outlet.
The power won’t turn on.
The audio cables are not
properly connected.
Check all audio connections.
Connected devices are not
turned ON.
Check to make sure that the power to all connected devices is turned ON.
Check the matrix indicators to make sure that the input and output
assignments are correct. If the matrix settings are not appropriate
use the IMX644 Manager application to set them as required. Also
check the matrix send levels.
No sound.
Wrong matrix settings.
Level settings too low.
Make sure that the panel level controls are set appropriately. If this
doesn’t produce the desired output check the settings via the IMX644
manager application.
Sound levels don’t change
when the level knobs are
operated.
or disengage LOCK for a specific knob via the IMX644 Manager
application.
The LOCK function may be
engaged.
The MEMORY button is not
being held long enough.
Press and hold the MEMORY button for longer than two seconds.
Pressing a MEMORY button
results in no change to the
settings.
No settings have been
saved in memory.
Make the required settings via the IMX644 Manager application, and
then save them to the appropriate memory.
The appropriate memory-to-
button assignment has not
been made.
Use the IMX644 Manager application to assign the desired memory
to the button.
The [LOCK] switch hasn’t
been properly pressed. The
LOCK indicator will be off if
the controls aren’t locked.
the controls are locked.
The IMX644 cannot be locked.
The IMX644 has been
locked via the IMX644 Man-
ager application.
Make sure that the [LOCK] buttons in the IMX644 Manager BLOCK
or INPUT screen are turned on (pages 21 and 24 of the IMX644
Manager owner’s manual).
The [LOCK] switch doesn
work.
’t
Memory cannot be recalled
via the GPI interface.
A memory is not assigned to
the GPI input.
Use the IMX644 Manager application to assign the desired memory
to the GPI Input Terminal.
The IMX644 cannot be oper-
ated from an external con-
troller (AMX/Crestron).
Turn the IMX644 power OFF, and then after waiting for at least six
seconds turn the power ON again (without holding the MEMORY [D]
button) to start the IMX644 in “normal” mode.
The IMX644 is operating in
IMX644 Manager mode.
The IMX644 cannot be oper-
ated from the IMX644 Man-
ager application.
Turn the IMX644 power OFF, and then after waiting for at least six
seconds turn the power ON again while holding the MEMORY [D]
button to start the IMX644 in “IMX644 Manager” mode.
The IMX644 is operating in
normal mode.
The Parameter Edit screen
will not open when the pass-
word is entered via the
IMX644 Manager.
Initialize the internal IMX644 memory if the password has been lost
or forgotten.
The password is incorrect.
Memory Initialization
The following procedure initializes the IMX644 memory.
CAUTION
•
All data stored in memory will be erased when the memory is initialized. Perform the following procedure with caution.
1
2
Turn the IMX644 power OFF.
Turn the power back ON while simultaneously holding the MEM-
ORY [A] and [D] buttons.
Initialization will take about one second.
When initialization is complete the odd-numbered matrix input channel indica-
tors will light.
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Appendix
3
To recall the initial memory data press a MEMORY button for longer than two seconds.
NOTE
•
Initialization erases the password required to connect the IMX644 Manager application to the IMX644 unit. After initialization it will be
necessary to set a new password to bring the IMX644 online.
IMX644 Status List
The chart below shows the panel and memory recall operations that are effective with various combinations of modes, panel LOCK
settings, and IMX644 Manager LOCK/LINK settings, and whether the panel or memorized level settings are applied when a memory
is recalled.
Individual
Channel Settings
(IMX644
Operations that Affect Actual
Level
IMX644 Settings
Operations that Recall Memories
Manager)
IMX644
Manager
Control
IMX644
Manager
Control
[LOCK]
indicator button
[LOCK] [LINK]
Level
Knobs
External MEMORY
Controller buttons
External
Controller
Level
Setting
GPI
button
Level Knob
Setting
unlit
unlit
unlit
unlit
lit
ON
ON
ON
Effective
Effective
Effective
Effective
Invalid
–
–
Memory
Setting
OFF
ON
–
–
Effective
–
Effective
–
–
Level Knob
Setting
OFF
OFF
ON
–
Memory
Setting
OFF
ON
–
–
–
Offline
Memory
Setting
–
Memory
Setting
lit
ON
OFF
ON
Invalid
–
–
IMX644
Manager
Mode
Effective
–
Effective
–
–
Level Knob
Setting
lit
OFF
OFF
ON
Effective
Effective
Effective
Invalid
–
Memory
Setting
lit
OFF
ON
–
–
–
Level Knob
Setting
unlit
unlit
unlit
unlit
unlit
unlit
unlit
unlit
lit
Invalid
Memory
Setting
ON
OFF
ON
Effective
–
Online*
Effective
–
Effective Effective
–
Level Knob
Setting
OFF
OFF
ON
Effective
Invalid
Invalid
Memory
Setting
OFF
ON
Effective
–
Level Knob
Setting
Effective
Effective
Effective
Effective
Invalid
–
–
–
–
–
–
–
–
Effective
Memory
Setting
ON
OFF
ON
Effective
Effective
Effective
Effective
–
Effective
Level Knob
Setting
OFF
OFF
ON
Memory
Setting
OFF
ON
Effective
Effective
Normal Mode
Memory
Setting
Memory
Setting
lit
ON
OFF
ON
Invalid
Effective
Effective
Effective
Effective
–
Effective
Level Knob
Setting
lit
OFF
OFF
Effective
Effective
Memory
Setting
lit
OFF
Effective
*
•
When the IMX644 is online in the IMX644 Manager mode, LOCK is temporarily disengaged and the panel [LOCK] indicator will go
out. Do not operate the panel [LOCK] switch in this condition.
NOTE
Since the level settings for each channel are stored in the IMX644 unit itself, be sure that the IMX644 Manager application is online
when setting up the memories.
IMX644 Owner’s Manual 19
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Appendix
Remote Control Protocol Specifications
The commands that can be transferred between the IMX644 and a remote controller are as follows.
<Command> <Option 1> <Option 2> … <Option n> <Line Feed>
•
•
A line feed (LF = 0x0A) is necessary at then end of every command line.
At least one character space is required between the command name and first option, and between options.
■ Communication Specifications
Baud Rate : 38400 bps
Data : 8bit
Parity : none
Stop Bit : 1bit
Flow Control : none
Memory Recall
Individual Channel Level Control
Communication Direction
Command
Communication Direction
Command
RSC 0 m
RSC OK
SVL 0 c x
SVL OK
External Controller
External Controller
External Controller
IMX644
IMX644
IMX644
External Controller
External Controller
External Controller
IMX644
IMX644
IMX644
➜
➜
➜
➜
➜
➜
SCN 0 m
VOL 0 c x
➜
➜
VOL 0 0 x
VOL 0 1 x
External Controller
External Controller
IMX644
IMX644
➜
External Controller
IMX644
VOL 0 13 x
m: memory number (1–16)
c: channel number (0–13)
x: level value (0–127)
0
1
MONO 1
MONO 2
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
-∞
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
-37.9
-36.7
-35.6
-34.5
-33.6
-32.7
-31.8
-31.0
-30.2
-29.4
-28.7
-28.0
-27.3
-26.7
-26.1
-25.5
-24.9
-24.4
-23.9
-23.4
-22.9
-22.4
-22.0
-21.6
-21.2
-20.8
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
-20.4
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
-10.0
-9.6
-9.2
-8.8
-8.4
-8.0
-7.6
-7.2
-6.8
-6.4
-6.0
-5.6
-5.2
-4.8
-4.4
-4.0
-3.6
-3.2
-2.8
-2.4
-2.0
-1.6
-1.2
-0.8
-0.4
0.0
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
0.4
0.8
-∞
-20.0
-19.6
-19.2
-18.8
-18.4
-18.0
-17.6
-17.2
-16.8
-16.4
-16.0
-15.6
-15.2
-14.8
-14.4
-14.0
-13.6
-13.2
-12.8
-12.4
-12.0
-11.6
-11.2
-10.8
-10.4
2
MONO 3
-∞
1.2
3
MONO 4
-111.4
-102.4
-94.4
-88.4
-83.4
-78.4
-74.4
-70.4
-66.4
-63.8
-60.6
-57.6
-55.1
-52.9
-50.9
-49.1
-47.5
-46.0
-44.5
-43.1
-41.7
-40.4
-39.1
1.6
4
MONO 5
2.0
5
MONO 6
2.4
6
STEREO 1
STEREO 2
STEREO 3
STEREO 4
OUTPUT1
OUTPUT2
OUTPUT3
OUTPUT4
2.8
7
3.2
8
3.7
9
4.2
10
11
12
13
4.7
5.2
5.8
6.5
7.3
8
8.1
7
9.0
6
10.0
10.0
10.0
10.0
10.0
10.0
10.0
5
4
3
2
1
0
20 IMX644 Owner’s Manual
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Appendix
General Specifications
Signal Delay
2.5ms (MONO INPUT [1-6] to OUTPUT[1-4])
Dimensions (W x H x D)
Net Weight
480 x 88 x 364.5 mm
5.5kg
U.S/Canada: 120V, 60Hz
Korea:
China:
Other:
220V, 60Hz
220V, 50Hz
110V-240V, 50/60Hz
Power Requirements
Power Consumption
Heat Dissipation
21W
18.06 kcal/h
Operating: 0 to +40˚C
Temperature range
Storage: -20 to +60˚C
Included Accessories
AC Power Cord Length
Owner’s Manual, AC Power Cord, Rubber feet x 4, 3-pin Euroblock plug x 12
200 cm
Conditions
Min.
39.69
–
Typ.
–
Max.
50.88
–
Unit
kHz
kHz
Sampling Frequency External Clock
Sampling Frequency Internal Clock
Frequency Range
Frequency
–
word clock : int 48kHz
48
Input/output Characteristics
ANALOG INPUT CHARACTERISTICS
Input level
PAD
34dB
Actual Load
Impedance
For Use With
Nominal
Input Terminals
GAIN
Connector
Nominal
-54dBu (1.55mV)
-30dBu (24.5mV)
-20dBu (77.5mV)
+4dBu (1.23V)
Max. before clip
-40dBu (7.75mV)
-16dBu (123mV)
-6dBu (387mV)
MAX
MIN
MAX
MIN
OFF
ON
4.2kΩ
20kΩ
20kΩ
EUROBLOCK
(Balanced)
(5.08mm pitch)
50-600Ω Mics
& 600Ω Lines
MONO INPUT [1-6]
+18dBu (6.16V)
STEREO INPUT [1L/R,
2L/R, 3L/R, 4A L/R]
RCA Pin Jack
(Unbalanced)
–
600Ω Lines
-4dBV (0.631V)
+10dBV (3.16V)
*
*
*
0dBu = 0.775 Vrms. , 0dBV = 1.00 Vrms.
+48V DC( phantom power ) is supplied to MONO INPUT[1-6] EUROBLOCK connectors via each individual switch.
All AD converters are 24 bit linear, 64times oversampling.
ANALOG OUTPUT CHARACTERISTICS
Output level
Actual Source
Output Terminals
For Use With
Nominal
Connector
Impedance
Nominal
Max. before clip
EUROBLOCK
(Balanced)
(5.08mm pitch)
OUTPUT [1A/B, 2A/B, 3, 4]
900Ω
450Ω
10kΩ Lines
10kΩ Lines
+4dBu (1.23V)
+18dBu (6.16V)
RCA Pin Jack
(Unbalanced)
REC OUT [L, R]
-4dBV (0.631V)
+10dBV (3.16V)
*
*
0dBu = 0.775 Vrms. , 0dBV = 1.00 Vrms.
All DA converters are 24 bit linear,128times oversampling.
DIGITAL INPUT CHARACTERISTICS
DIGITAL OUTPUT CHARACTERISTICS
Data
length
Data
length
Terminal
Format
Level
Connector
Terminal
Format
JEITA
Level
Connector
STEREO
INPUT [4B]
JEITA
CP-1212
OPTICAL
Square
OPTICAL
Square
24bit
-24 to –14.5dBm *1
REC OUT
24bit
-21 to –15dBm *1
CP-1212
*1 0dBm = 1mW
*1 0dBm = 1mW
CONTROL I/O CHARACTERISTICS
Terminal
Format
Level
Connector
IN
Mechanical “make” contact
Compatible with open collector output
GPI *1
OUT
–
–
Open Collector
Open Collector
RS-232C
–
D-SUB 25P (Female)
POWER MONITOR OUTPUT
REMOTE
USB
RS-232C
D-SUB 9P (Male)
Type B
USB 1.1 Function
*1 INPUT: 8 ports, OUTPUT: 8 ports
OUTPUT: Withstanding Voltage Vmax = 35V (OFF)
OUTPUT: Sink Current Imax = 30mA/1 port, Imax = 240mA/8 ports (ON)
OUTPUT: Shorted to GND when ON
POWER MONITOR: OPEN (POWER OFF), SHORT (POWER ON)
POWER MONITOR: Withstanding Voltage Vmax = 35V (POWER OFF)
POWER MONITOR: Sink Current Imax = 30mA (POWER ON)
IMX644 Owner’s Manual 21
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Appendix
Electrical Characteristics
Output impedance of signal generator : 150 ohms
Frequency Response
20Hz-20kHz, reference to the nominal output level @1kHz
Input
MONO INPUT [1-6]
STEREO INPUT [1L/R-4L/R]
STEREO INPUT [1L/R-4L/R]
OPTICAL IN
Output
RL
Conditions
Min.
-1.5
-1
Typ.
0.0
0.0
0.0
0.0
0.0
Max.
0.5
0.5
0.5
0.5
0.5
Unit
dB
dB
dB
dB
dB
OUTPUT [1-4]
OUTPUT [1-4]
REC OUT [L, R]
OUTPUT [1-4]
REC OUT [L, R]
10KΩ
10KΩ
10KΩ
10KΩ
10KΩ
–
–
–
–
–
-1
-1
OPTICAL IN
-1
Total Harmonic Distortion
@1kHz
Input
MONO INPUT [1-6]
Output
RL
Conditions
+4dBu@1kHz, GAIN: MAX, PAD: OFF
+4dBu@1kHz, GAIN: MIN, PAD: ON
+4dBu@1kHz
Min.
Typ.
Max.
0.1
Unit
%
OUTPUT [1-4]
OUTPUT [1-4]
OUTPUT [1-4]
REC OUT [L, R]
10KΩ
10KΩ
10KΩ
10KΩ
–
–
–
–
–
–
–
–
MONO INPUT [1-6]
0.08
0.1
%
STEREO INPUT [1L/R-4L/R]
STEREO INPUT [1L/R-4L/R]
%
-4dBV@1kHz
0.1
%
*
Total Harmonic Distortion are measured with a 22kHz low pass filter
EIN (EIN=Equivalent Input Noise)
Input
Output
RL
Conditions
Min.
Typ.
Max.
Unit
Rs=150Ω, GAIN:MAX, PAD: OFF
OUTPUT level control at nominal level and one
INPUT level control at nominal level.
MONO INPUT [1-6]
OUTPUT [1-4]
10KΩ
–
–
-120
dBu
* EIN are measured with a IHF-A filter
Hum & Noise
Input
–
–
Output
OUTPUT [1-4]
REC OUT [L, R]
RL
10KΩ
10KΩ
Conditions
all level control at minimum level
all level control at minimum level
Min.
–
–
Typ.
–
–
Max.
-82
Unit
dBu
dBV
-90
* Hum & Noise are measured with a DIN AUDIO filter
Crosstalk
@1kHz
from/to
to/from
CH (N-1) or (N+1)
CH (N-1) or (N+1)
Conditions
all adjacent inputs
Min.
–
–
Typ.
–
–
Max.
-70
Unit
dB
CH N
CH N
all adjacent outputs
-70
dB
Maximum voltage gain
@1kHz
Input
MONO INPUT [1-6]
MONO INPUT [1-6]
Output
OUTPUT [1-4]
REC OUT [L, R]
RL
10KΩ
10KΩ
Conditions
Rs=150Ω, GAIN: MAX, PAD: OFF
Rs=150Ω, GAIN: MAX, PAD: OFF
Min.
–
–
Typ.
58
Max.
–
–
Unit
dB
52.2
dB
Phantom Voltage
Output
Conditions
Min.
Typ.
Max.
Unit
MONO INPUT [1-6]
hot & cold: No load
46
48
50
V
Indicator turn on level
Input
Output
Conditions
red LED:
Min.
Typ.
-2
Max.
0
Unit
dBFs
dBFs
dBFs
dBFs
PEAK
ON
-4
-42
-4
MONO INPUT [1-6]
STEREO INPUT [1L/R-4L/R]
–
SIGNAL green LED: ON
PEAK red LED: ON
-38
-2
-34
0
–
OUTPUT [3, 4]
SIGNAL green LED: ON
-48
-44
-40
Level Meter turn on level
Input
Output
Conditions
PEAK red LED:
Min.
-4
Typ.
-2
Max.
0
Unit
dBFs
dBFs
dBFs
dBFs
dBFs
dBFs
ON
ON
ON
ON
ON
ON
-8
orange LED:
-10
-16
-22
-34
-48
-8
-6
-14
-20
-32
-44
orange LED:
green LED:
green LED:
green LED:
-14
-20
-32
-44
-12
-18
-30
-40
–
OUTPUT [1,2]
22 IMX644 Owner’s Manual
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Appendix
GPI Circuit Example
■ Example: Controlling the IMX644 from a switch
IMX644
+5V
1K
INPUT
GND
47K
CPU
22K
■ Example: Lighting the LED of an external device from the IMX644
IMX644
Max.30mA
110
OUTPUT
GND
Lit
Max. +35V
CPU
■ Example: Lighting the LED of an external device while the IMX644 power is ON.
IMX644
POWER
Max.30mA
Lit
MONITOR
HOT
110
POWER
MONITOR
COLD
Max. +35V
Power ON
IMX644 Owner’s Manual 23
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Appendix
Dimensions
480
Unit: mm
* Specifications and descriptions in this owner’s manual are for information purposes only. Yamaha Corp. reserves the right to change
or modify products or specifications at any time without prior notice. Since specifications, equipment or options may not be the same
in every locale, please check with your Yamaha dealer.
24 IMX644 Owner’s Manual
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Information for Users on Collection and Disposal of Old Equipment
This symbol on the products, packaging, and/or accompanying documents means that used
electrical and electronic products should not be mixed with general household waste.
For proper treatment, recovery and recycling of old products, please take them to applicable col-
lection points, in accordance with your national legislation and the Directives 2002/96/EC.
By disposing of these products correctly, you will help to save valuable resources and prevent
any potential negative effects on human health and the environment which could otherwise arise
from inappropriate waste handling.
For more information about collection and recycling of old products, please contact your local
municipality, your waste disposal service or the point of sale where you purchased the items.
[For business users in the European Union]
If you wish to discard electrical and electronic equipment, please contact your dealer or supplier
for further information.
[Information on Disposal in other Countries outside the European Union]
This symbol is only valid in the European Union. If you wish to discard these items, please con-
tact your local authorities or dealer and ask for the correct method of disposal.
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For details of products, please contact your nearest Yamaha representative or the authorized distributor listed below.
POLAND
NORTH AMERICA
ASIA
Yamaha Music Europe GmbH
Branch Sp.z o.o. Oddzial w Polsce
ul. 17 Stycznia 56, PL-02-146 Warszawa, Poland
Tel: 022-868-07-57
CANADA
THE PEOPLE’S REPUBLIC OF CHINA
Yamaha Canada Music Ltd.
135 Milner Avenue, Scarborough, Ontario,
M1S 3R1, Canada
Yamaha Music & Electronics (China) Co.,Ltd.
2F, Yunhedasha, 1818 Xinzha-lu, Jingan-qu,
Shanghai, China
Tel: 416-298-1311
THE NETHERLANDS/
Tel: 021-6247-2211
BELGIUM/LUXEMBOURG
U.S.A.
INDIA
Yamaha Music India Pvt. Ltd.
5F Ambience Corporate Tower Ambience Mall Complex
Ambience Island, NH-8, Gurgaon-122001, Haryana, India
Tel: 0124-466-5551
Yamaha Music Europe Branch Benelux
Clarissenhof 5-b, 4133 AB Vianen, The Netherlands
Tel: 0347-358 040
Yamaha Corporation of America
6600 Orangethorpe Ave., Buena Park, Calif. 90620,
U.S.A.
Tel: 714-522-9011
FRANCE
Yamaha Musique France
BP 70-77312 Marne-la-Vallée Cedex 2, France
Tel: 01-64-61-4000
INDONESIA
PT. Yamaha Music Indonesia (Distributor)
PT. Nusantik
Gedung Yamaha Music Center, Jalan Jend. Gatot
Subroto Kav. 4, Jakarta 12930, Indonesia
Tel: 21-520-2577
CENTRAL & SOUTH AMERICA
MEXICO
Yamaha de México S.A. de C.V.
Calz. Javier Rojo Gómez #1149,
Col. Guadalupe del Moral
C.P. 09300, México, D.F., México
Tel: 55-5804-0600
ITALY
Yamaha Musica Italia S.P.A.
Combo Division
Viale Italia 88, 20020 Lainate (Milano), Italy
Tel: 02-935-771
KOREA
Yamaha Music Korea Ltd.
8F, 9F, Dongsung Bldg. 158-9 Samsung-Dong,
Kangnam-Gu, Seoul, Korea
Tel: 080-004-0022
SPAIN/PORTUGAL
BRAZIL
Yamaha Música Ibérica, S.A.
Ctra. de la Coruna km. 17, 200, 28230
Las Rozas (Madrid), Spain
Tel: 91-639-8888
Yamaha Musical do Brasil Ltda.
Rua Joaquim Floriano, 913 - 4' andar, Itaim Bibi,
CEP 04534-013 Sao Paulo, SP. BRAZIL
Tel: 011-3704-1377
MALAYSIA
Yamaha Music Malaysia, Sdn., Bhd.
Lot 8, Jalan Perbandaran, 47301 Kelana Jaya,
Petaling Jaya, Selangor, Malaysia
Tel: 3-78030900
SWEDEN
ARGENTINA
Yamaha Music Latin America, S.A.
Sucursal de Argentina
Olga Cossettini 1553, Piso 4 Norte
Madero Este-C1107CEK
Buenos Aires, Argentina
Yamaha Scandinavia AB
J. A. Wettergrens Gata 1, Box 30053
S-400 43 Göteborg, Sweden
Tel: 031 89 34 00
SINGAPORE
Yamaha Music Asia Pte., Ltd.
#03-11 A-Z Building
DENMARK
YS Copenhagen Liaison Office
Generatorvej 6A, DK-2730 Herlev, Denmark
Tel: 44 92 49 00
140 Paya Lebor Road, Singapore 409015
Tel: 747-4374
Tel: 011-4119-7000
PANAMA AND OTHER LATIN
AMERICAN COUNTRIES/
CARIBBEAN COUNTRIES
Yamaha Music Latin America, S.A.
Torre Banco General, Piso 7, Urbanización Marbella,
Calle 47 y Aquilino de la Guardia,
Ciudad de Panamá, Panamá
TAIWAN
Yamaha KHS Music Co., Ltd.
3F, #6, Sec.2, Nan Jing E. Rd. Taipei.
Taiwan 104, R.O.C.
NORWAY
Norsk filial av Yamaha Scandinavia AB
Grini Næringspark 1, N-1345 Østerås, Norway
Tel: 67 16 77 70
Tel: 02-2511-8688
THAILAND
RUSSIA
Tel: +507-269-5311
Siam Music Yamaha Co., Ltd.
4, 6, 15 and 16th floor, Siam Motors Building,
891/1 Rama 1 Road, Wangmai,
Pathumwan, Bangkok 10330, Thailand
Tel: 02-215-2626
Yamaha Music (Russia)
Room 37, bld. 7, Kievskaya street, Moscow, 121059,
Russia
Tel: 495 626 5005
EUROPE
THE UNITED KINGDOM
Yamaha Music U.K. Ltd.
Sherbourne Drive, Tilbrook, Milton Keynes,
MK7 8BL, England
OTHER EUROPEAN COUNTRIES
Yamaha Music Europe GmbH
Siemensstraße 22-34, 25462 Rellingen, Germany
Tel: +49-4101-3030
OTHER ASIAN COUNTRIES
Yamaha Corporation,
Asia-Pacific Sales & Marketing Group
Nakazawa-cho 10-1, Naka-ku, Hamamatsu,
Japan 430-8650
Tel: 01908-366700
GERMANY
Yamaha Music Europe GmbH
Siemensstraße 22-34, 25462 Rellingen, Germany
Tel: 04101-3030
Tel: +81-53-460-2303
AFRICA
Yamaha Corporation,
Asia-Pacific Sales & Marketing Group
Nakazawa-cho 10-1, Naka-ku, Hamamatsu,
Japan 430-8650
OCEANIA
SWITZERLAND/LIECHTENSTEIN
AUSTRALIA
Yamaha Music Europe GmbH
Branch Switzerland in Zürich
Seefeldstrasse 94, 8008 Zürich, Switzerland
Tel: 01-383 3990
Yamaha Music Australia Pty. Ltd.
Level 1, 99 Queensbridge Street, Southbank,
Victoria 3006, Australia
Tel: +81-53-460-2303
MIDDLE EAST
TURKEY/CYPRUS
Yamaha Music Europe GmbH
Siemensstraße 22-34, 25462 Rellingen, Germany
Tel: 04101-3030
Tel: 3-9693-5111
AUSTRIA
Yamaha Music Europe GmbH Branch Austria
Schleiergasse 20, A-1100 Wien, Austria
Tel: 01-60203900
COUNTRIES AND TRUST
TERRITORIES IN PACIFIC OCEAN
Yamaha Corporation,
Asia-Pacific Sales & Marketing Group
Nakazawa-cho 10-1, Naka-ku, Hamamatsu,
Japan 430-8650
CZECH REPUBLIC/SLOVAKIA/
HUNGARY/SLOVENIA
Yamaha Music Europe GmbH Branch Austria
Schleiergasse 20, A-1100 Wien, Austria
Tel: 01-602039025
OTHER COUNTRIES
Yamaha Music Gulf FZE
LOB 16-513, P.O.Box 17328, Jubel Ali,
Dubai, United Arab Emirates
Tel: +971-4-881-5868
Tel: +81-53-460-2303
HEAD OFFICE Yamaha Corporation, Pro Audio Division
Nakazawa-cho 10-1, Naka-ku, Hamamatsu, Japan 430-8650
Tel: +81-53-460-2441
PA26
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