Yamaha MRX7-D

MRX7-D features an input/output configuration that is ideal for a wide range of applications.

The entire operation of adjusting levels of microphones, Blu-ray players and other inputs, processing audio signals with internal EQ and other effects, and distributing those signals to power amplifiers or external controllers, can be handled with single device.

Built-in Dante digital audio networking capability makes it easy to set up systems of just about any scale while significantly reducing cabling cost and labor. Dante capable devices can be added to the system at any time, allowing flexible reconfiguration and expansion as needed.

The MRX7-D, MTX series matrix processors, XMV series power amplifiers, and other Dante equipped devices can be easily connected via CAT5e or better Ethernet cables and gigabit switches to provide audio data networking in streamlined sound systems of any scale.

YDIF is an original Yamaha digital audio protocol that allows standard CAT5e Ethernet cable to be used for bidirectional transfer up to 16 channels of audio plus word clock signals over distances of up to 30 meters. It allows cascading of multiple MTX series units as well as signal transfer to XMV series power amplifiers via connections that are fast and simple to set up.

The MRX7-D features one Mini-YGDAI card slot that can accommodate cards supporting a variety of audio formats, and expansion by up to 16 I/O channels.

An SD memory card slot allows direct playback of MP3/WAV format audio files.

MRX7-D is compatible with a wide range of external controllers, enabling simple volume adjustment and complicated control.

DCP controllers provide flexible external control of several functions such as preset recall, levels, and SD card playback. The series comprises of three different models that feature various configurations of switches and volume knobs. DCP controllers are connected to MTX/MRX series by using a daisy-chain connection up to eight control panels. All three models are available in either US or EU standardized sizes, built to meet the specifications of most regions around the globe.

DCH8 divides the control line from host devices such as the Yamaha MTX/MRX series into up to 8 lines. It allows for a flexible system structure, with a combination of star connections and daisy chain connections as a repeater between the host device and the control panels.

It is possible to connect up to eight units of DCP controller by using daisy chain connections of up to 200m. And, it is possible to extend the connection distance by reducing the number of DCP series that are installed as below. When using 2 or 3 DCP controllers in a commercial space which has a wide floor, a simple daisy chain connection is effective. When using more than 4 DCP controllers in a wide commercial space over more that one floor, a flexible topology (combining Daisy chain and Star connections) can help to extend the «total» cable length by combining a DCP series with DCH8.

The Wireless DCP app for iPhone or Android devices allows you to remote control the MTX/MRX series. Since the Wireless DCP has the same function as the DCP series, you can control the MTX/MRX series via your smart device at any place in the restaurants, banquet halls and so on. * Wireless DCP can be downloaded from Apple’s App Store and Google Play at no charge.(Apple, iPhone and iPod are trademarks of Apple Inc., registered in the U.S and other countries. App Store is a service mark of Apple Inc. Android and Google Play are trademarks of Google Inc.).

This handy iPad application allows MTX/MRX system control via a Wi-Fi network. A variety of control widgets can be arranged as required to create custom control panel layouts that are ideally configured for individual systems.*ProVisionaire Touch can be downloaded from Apple’s App Store at no charge.(Apple, iPad are trademarks of Apple Inc., registered in the U.S and other countries. App Store is a service mark of Apple Inc. ).

The MRX7-D includes RS232C and Ethernet connectors that facilitate connection to a variety of external controllers such as those manufactured by AMX and CRESTRON.

As the scale and control requirements of an audio system grow, the number of devices required and overall complexity increase correspondingly. With the MRX7-D and dedicated MTX-MRX Editor software, input and output devices can be quickly arranged via a software wizard and internal MRX7-D processing components can be combined as needed. One simple software application provides everything needed for comprehensive system design and management.

The MTX-MRX Editor software facilitates sound system design with a workflow that simulates standard installation procedure. An easy-to-use wizard lets you start by arranging the devices to be used in the desired layout, then processing components can be added wherever needed. MTX series matrix processors, EXi8 input expanders, EXo8 output expanders, XMV series power amplifiers, and DCP digital control panels can be added according to the needs and scale of the application. The MTX-MRX Editor provides comprehensive, intuitive tools for designing sound systems from input to output.

In addition to the MRX7-D, the wizard allows MTX series matrix processors, XMV series power amplifiers, DCP digital control panels, and EXi8/EXo8 input and output expanders to be added and arranged as needed.

The MRX7-D features a versatile range of built-in processing components: faders, ON/OFF switches, matrix source selectors, GEQ, Dugan automatic mixing, speech privacy, echo canceller, and more. Simply select the required components and arrange them via a graphical interface.

Parameters that will be available to the end user can be specified via the MTX-MRX Editor. A variety of external controllers can be accommodated to ideally match the requirements of each installation.

Feedback and unwanted noise pickup can be difficult to control at corporate meetings and panel discussions where multiple microphones are used, often resulting in impaired sound quality and intelligibility. The Dugan Automixer automatically increases the gain of microphones that are in use while reducing the gain of unused microphones. It also keeps track of the relationship between individual inputs and the overall input level to ensure ideally consistent mixer gain. A safe feedback margin and optimum signal-to-noise ratio are maintained at all times.

When nobody is speaking the input level at all microphones is low and the gain is equal. Rather than being muted, gain is distributed equally between all microphones.

When one person is speaking the gain of that person’s microphone is instantly increased to 0dB while the gain of the remaining microphones is lowered. The same occurs when any other one person is speaking.

If two people speak simultaneously the gain distribution between the active microphones is adjusted to achieve consistent overall gain, while the gain of the remaining microphone is lowered.

In remote conferencing situations speech from the remote location emanating from the local speaker can be pickup up by the local microphone and returned to the remote location in addition to the local speech. This type of echo can significantly degrade the intelligibility of the sound heard at the remote location.The Acoustic Echo Canceller effectively suppresses this type of unwanted echo, maximizing clarity and intelligibility. The sound received at the microphone is compared with the sound emanating from the speaker and analyzed. An adaptive filter is employed to subtract the speaker output from the microphone input, preventing the speaker output from being returned as an echo by the microphone. Please note that this function is not designed to eliminate the room’s own acoustic reflections or reverberation.* The Acoustic Echo Canceller is available in version 2.1 and later.

The mute link function with Revolabs Exective Elite Series digital wireless microphone system

Yamaha and Revolabs codevelopped the mute link function, which enables mic muting of the Yamaha MRX7-D by ON/OFF button action directly from the Rebolabs Exective Elite – the local muting is disabled. Even when muted, the signal from the microphones is constantly sent to the AEC Module of MRX7-D to monitor the acoustic environment which speeds up AEC learning.
This function greatly helps to reduce the chance of echo before the microphone is in use.
*This function requires on coming Executive Elite firmware version 1.1.6. and later

The need to protect privacy in conference rooms and meeting areas, particularly in financial or medical institutions, is a growing concern. The Speech Privacy System uses an original sonic masking technique to prevent leakage of confidential information.Rather than masking the conversation with high volume noise, an “information masking tone” synthesized from elements of human speech using an original process effectively camouflages spoken information. This approach allows the information to be protected by relatively low volume masking, helping to maintain the comfort of the conference environment.Sound synthesized from human speech renders conversation unintelligible to eavesdroppers. This function does not silence the sound of the conversation.

MRX7-D

Analog Input Specifications

* In these specifications, 0dBu = 0.775 Vrms., 0dBV = 1.00 Vrms. 
* All input AD converters are 24bit linear, 128times oversampling. 
* +48V DC ( phantom power ) is supplied to INPUT EUROBLOCK connectors via each individual software controlled switch.

Analog Output Specifications

* In these specifications, 0dBu = 0.775 Vrms. 
*All output DA converters are 24bit, 128times oversampling.(Fs=48kHz)

Digital Input and Output Specifications

Control I/O Specifications