Owner's Manual Yamaha Pro Audio global web site: http://www.yamahaproaudio.com/ Yamaha Manual Library http://www.yamaha.co.jp/manual/ U.R.G.
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.
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.
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.
Table of contents Introduction Features ............................................................................... 6 Precautions for Rack Mounting ............................................ 7 Before Operation .................................................................. 7 Acquiring the IMX644 Manager Software and Manuals ....... 7 Controls and Functions Front Panel ........................................................................... 8 Rear Panel.........................................
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.
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 temperature inside the rack, resulting in inefficient performance.
Controls and Functions Front Panel 1 3 24 5 6 7 9 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 accidental changes. After setting levels and/or recalling a memory as required, 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.
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 excessively high output levels are indicated, reduce the input and/or output levels as required.
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 2 3 5 4 7 6 8 9 ) 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 2 Earth Screw For maximum safety, please earth the unit properly.
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.
Connections System Example Computer Cassette deck Microphone MD player Wireless microphone CD recorder Wireless tuner AMX or similar external controller 1 2 3 4 5 6 7 8 Power amplifier External control input/ output device Zone 1 speakers Power amplifier Zone 3 speakers Zone 4 speakers 12 IMX644 Owner’s Manual Zone 2 speakers
Connections Euroblock Plug Connection Connectors and Cables Use the included Euroblock plug (3P) to make connections to the [MONO INPUT] and [OUTPUT] connectors. ■ [MONO INPUT] and [OUTPUT] Connectors (3-pin Euroblock) ● Cable preparation • To prepare the cable for approx. 7 mm attachment to a Euroblock connector, strip the wire as shown in the illustration, and use stranded wire to make connections.
Connections 3 ■ [GPI] Connector (25-pin D-sub) Securely tighten the terminal screws. Pull the cables (not too strongly) to confirm that they are securely connected. 4 Connect the Euroblock plug to the IMX644 Euroblock connector. External GPI (General Purpose Interface) control devices can be connected to this connector to allow input and output of remote control signals.
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 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.
Mix Functions ■ Feedback Suppressor The Feedback Suppressor effectively controls feedback by identifying the feedback frequencies that will occur naturally as a result of the combined acoustic and electrical characteristics of the sound system within the acoustic space in which it is used.
Mix Functions ■ BALANCE Output Channels Adjusts the A/B level balance for OUTPUT channels 1 and 2. Parameter ■ 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. Type Parameter PEQ (Peaking EQ) HPF (High Pass Filter) LPF (Low Pass Filter) L. Shelf (Low Shelving EQ) H.Shelf (High Shelving EQ) Range F 40Hz – 18kHz G -15dB – +15dB Q 0.5 – 12.
Appendix Troubleshooting Symptom Possible Cause Solution The power cable is not properly 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 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. Wrong matrix settings.
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.
Appendix Remote Control Protocol Specifications The commands that can be transferred between the IMX644 and a remote controller are as follows.
Appendix General Specifications Signal Delay Dimensions (W x H x D) Net Weight Included Accessories AC Power Cord Length 2.5ms (MONO INPUT [1-6] to OUTPUT[1-4]) 480 x 88 x 364.5 mm 5.5kg U.S/Canada: 120V, 60Hz Korea: 220V, 60Hz China: 220V, 50Hz Other: 110V-240V, 50/60Hz 21W 18.
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 OPTICAL IN Output OUTPUT [1-4] OUTPUT [1-4] REC OUT [L, R] OUTPUT [1-4] REC OUT [L, R] RL 10KΩ 10KΩ 10KΩ 10KΩ 10KΩ Output OUTPUT [1-4] OUTPUT [1-4] OUTPUT [1-4] REC OUT [L, R] RL 10KΩ 10KΩ 10KΩ 10KΩ Conditions – – – – – Min. -1.5 -1 -1 -1 -1 Typ. 0.0 0.0 0.
Appendix GPI Circuit Example ■ Example: Controlling the IMX644 from a switch IMX644 +5V 1K INPUT 47K CPU 22K GND ■ Example: Lighting the LED of an external device from the IMX644 IMX644 Max.30mA 110 OUTPUT Lit CPU Max. +35V GND ■ Example: Lighting the LED of an external device while the IMX644 power is ON. IMX644 110 Power ON POWER MONITOR HOT POWER MONITOR COLD Max.30mA Lit Max.
Appendix 364.5 88 18.5 340 6 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.
STEREO 4B STEREO 4A STEREO 1-3 MONO 1 - 6 +48V OPTICAL DIR AD AD L R + - SRC INPUT GAIN AD PAD 34dB AD ON +48V R L 1 2 3 AD PEAK SIGNAL PEAK SIGNAL PEAK SIGNAL 2BAND PEQ 2BAND PEQ 2BAND PEQ 2BAND PEQ 3BAND PEQ LEVEL LEVEL Music Override Ducker Override Ducker Priority Music LEVEL Priority F.B.
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 collection points, in accordance with your national legislation and the Directives 2002/96/EC.
For details of products, please contact your nearest Yamaha representative or the authorized distributor listed below. NORTH AMERICA CANADA Yamaha Canada Music Ltd. 135 Milner Avenue, Scarborough, Ontario, M1S 3R1, Canada Tel: 416-298-1311 U.S.A. Yamaha Corporation of America 6600 Orangethorpe Ave., Buena Park, Calif. 90620, U.S.A. Tel: 714-522-9011 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.
Owner's Manual Yamaha Pro Audio global web site: http://www.yamahaproaudio.com/ Yamaha Manual Library http://www.yamaha.co.jp/manual/ U.R.G.