Page 2 - Explanation of Graphical Symbols; IMPORTANT SAFETY INSTRUCTIONS; C A U T I O N
The above warning is located on the top of the unit. 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 mag...
Page 3 - PRECAUTIONS; PLEASE READ CAREFULLY BEFORE PROCEEDING; * Please keep this manual in a safe place for future reference.
(5)-6 1/2 IMX644 Owner’s Manual 3 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-circuit...
Page 4 - SPECIAL NOTICES; COMPLIANCE INFORMATION STATEMENT; Connecting the Plug and Cord
(5)-6 2/2 4 IMX644 Owner’s Manual • 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. • The included power cable has a three-conductor plug, so if the AC outlet is grounded the IMX6...
Page 5 - Table of contents; Introduction
IMX644 Owner’s Manual 5 Table of contents Introduction Features ............................................................................... 6 Precautions for Rack Mounting ............................................ 7 Before Operation ...............................................................
Page 6 - Versatile Input/Output Configuration; Features; Accessories
6 IMX644 Owner’s Manual 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 ...
Page 7 - Connecting the AC Power Cable; Powering ON or OFF; CAUTION; Before Operation
Introduction IMX644 Owner’s Manual 7 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-peratu...
Page 8 - Controls and Functions; Front Panel; Precautions when using the [USB] connector
8 IMX644 Owner’s Manual Controls and Functions 1 [LOCK] Switch and Indicator 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 w...
Page 9 - MONO INPUT Section; OUTPUT Section
Controls and Functions IMX644 Owner’s Manual 9 ■ MONO INPUT Section 3 Matrix Indicators The outputs to which each mono input are assigned are displayed by orange indicators. 4 [SIGNAL/PEAK] Indicators These indicators light green when a signal is detected at the cor-responding mono input.The [SIGNAL...
Page 10 - Earth Screw; STEREO INPUT Section; REC OUT Section; L/R Connectors A and OPTICAL B; Euroblock Connectors; Rear Panel
Controls and Functions 10 IMX644 Owner’s Manual NOTE • Refer to “Connectors and Cables” on page 13 for details on connectors and cables for use with the IMX644. 1 [AC IN] Connector Connect the supplied AC cable here.First connect the AC cable to the IMX644, then plug it into an appropriate AC outlet...
Page 12 - Connections; System Example
12 IMX644 Owner’s Manual Connections System Example 1 2 3 4 5 6 7 8 Computer CD recorder Power amplifier Power amplifier External control input/output device AMX or similar external controller Microphone Cassette deck MD player Wireless tuner Wireless microphone Zone 3 speakers Zone 4 speakers Zone ...
Page 13 - Euroblock Plug Connection; Connectors and Cables
Connections IMX644 Owner’s Manual 13 ■ [MONO INPUT] and [OUTPUT] Con-nectors (3-pin Euroblock) 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 ...
Page 15 - Mix Functions; GAIN; MONO INPUT CHANNEL; MATRIX; Input Channels
IMX644 Owner’s Manual 15 Mix Functions The IMX644 mix functions can be programmed and edited in detail using the IMX644 Manager installed on a computer (page 7). The mix functions that can be controlled by the IMX644 Manager application are discussed in this section. For operating details refer to t...
Page 16 - Feedback Suppressor; Front Panel Static Filter Measurement; Priority Ducker
Mix Functions 16 IMX644 Owner’s Manual ■ Feedback Suppressor 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 ...
Page 17 - OUTPUT EQ; MEMORY; Output Channels; Others
Mix Functions IMX644 Owner’s Manual 17 ■ OUTPUT EQ 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. The initial default settings when the P.EQ type is selected...
Page 18 - Appendix; Troubleshooting; Memory Initialization
18 IMX644 Owner’s Manual Appendix 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 Turn the IMX644 power OFF. 2 Turn the power back ON while simultaneously holding...
Page 20 - Communication Specifications; Memory Recall; Remote Control Protocol Specifications
Appendix 20 IMX644 Owner’s Manual 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...
Page 21 - General Specifications
Appendix IMX644 Owner’s Manual 21 ANALOG INPUT CHARACTERISTICS * 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 ...
Page 22 - Electrical Characteristics
Appendix 22 IMX644 Owner’s Manual Output impedance of signal generator : 150 ohms Frequency Response 20Hz-20kHz, reference to the nominal output level @1kHz Total Harmonic Distortion @1kHz * Total Harmonic Distortion are measured with a 22kHz low pass filter EIN (EIN=Equivalent Input Noise) * EIN ar...
Page 23 - Example: Controlling the IMX644 from a switch; GPI Circuit Example
Appendix IMX644 Owner’s Manual 23 ■ Example: Controlling the IMX644 from a switch ■ Example: Lighting the LED of an external device from the IMX644 ■ Example: Lighting the LED of an external device while the IMX644 power is ON. GPI Circuit Example IMX644 +5V CPU 1K 47K 22K INPUT GND IMX644 110 CPU G...
Page 24 - Dimensions
Appendix 24 IMX644 Owner’s Manual * 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 sam...
Page 25 - Block Diagram
Appendix IMX644 Owner’s Manual 25 Block Diagram +4 8V MONO 1 - 6 ON +48V AD + - IN PU T G A IN S IGNA L PE AK 1 2 3 3B AND PEQ LE VE L F. B . SUP TO OUT1 TO OUT2 OUT 1A(L) BUS OUT 1B(R) BUS OUT 2A(L) BUS OUT 2B(R) BUS OUT 3 BUS OUT 4 BUS TO OUT 3 TO OUT4 PA D 34d B STE R EO 1 -3 AD SIG N AL PE AK 2B...
