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Marani Pro Audio MDA kEM Series User Manual

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MARANI ProAudio
MDA kEM Series Amplifier
User Manual
v1.0

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Summary of Contents for Marani Pro Audio MDA kEM Series

  • Page 1 MARANI ProAudio MDA kEM Series Amplifier User Manual v1.0...
  • Page 2 Digital power amplifier MDA-kEM series General Notes 1. The frequency response remains flat at 20-20Khz, the background noise is as low as -91dBu, and the maximum input level reaches +15dBu 2. New MIR linear phase crossover filter: MIR linear phase filter is a new X-over filter, which has the shape of a classic filter (LR24/48) without any phase distortion and keeps the phase curve flat straight 3.
  • Page 3 Digital power amplifier MDA-kEM series Front panel display and control ① ② ③ ④ ⑤ 1. LCD screen - Display current power amplifier status and various parameters 2. Standby switch: Hold down to enter or exit the standby mode 3. Navigation button (encoder) - Function selection and paging 4.

  • Page 4: Front Panel Operations

    Digital power amplifier MDA-kEM series FRONT PANEL OPERATIONS The front panel parameter adjustment, confirmation and closing are mainly completed by the navigation knob. There are five sub-menu pages under the main page, and each sub-menu will have an exit option, which can directly exit to the upper level.

  • Page 5: Factory Preset

    Digital power amplifier MDA-kEM series 1.1.1 Recall preset Presets stored in the device can be recalled. The specific operations are as follows: * Press the navigation knob * Turn the navigation knob and select RECALL PRESET menu * Turn the navigation knob to the left to select the preset that you want to recall. * Press the navigation knob to confirm the preset.

  • Page 6: Auto Sleep

    Digital power amplifier MDA-kEM series 1.1.3 Status The Status sub-menu functions: TEMPERATURE, AMP PROTECTION, SPEAKER DRIVE, BRIDGE MODE, MAX INPUT, AMP GAIN, EXIT Note: At present, the status does not support panel operation and can only be viewed. If you need to modify parameters, please use PC software to connect to the device for operation.
  • Page 7 Digital power amplifier MDA-kEM series 1.1.5 About In the About menu, you can check the firmware version of the current power amplifier. You can follow our official website and download the latest version of firmware to obtain function updates and bug fixes UDID:→...
  • Page 8 Digital power amplifier MDA-kEM series DSP Processes signal flow chart www.marani-proaudio.com E-mail: info@marani-proaudio.com...
  • Page 9 TCP/IP MDA kEM series control software, can allow remote control, for the adjustment of various parameters. The software interface supports TCP/IP and USB connection. In DHCP mode, simply connect the device to the PC with a network cable and open the software to automatically identify the device, or connect individual devices using a USB cable.
  • Page 10 Digital power amplifier MDA-kEM series > 1. ETHERNET TCP/IP Connection > 2. Wireless Routing Connection > 3. USB connection WIFI · 、 ' WIFI -· 、 ' USB2.0 square port cable < < TCP/IP Networking Cable TCP/IP connection: use a Category 5/Category 6 network cable to connect the TCP/IP port of the power amplifier to the network adapter interface of the computer.
  • Page 11 Digital power amplifier MDA-kEM series Network cable connections diagram: TCP/IP Networking Cable > DHCP TCP/IP Networking Cable > Static Common issues with the TCP/IP connection: 1. The automatic discovery message doesn’t appear. Solution: Click on the settings icon on the amplifier screen to enter the IP settings page and view the current IP mode of the amplifier.
  • Page 12 Digital power amplifier MDA-kEM series MDA kEM Series Remote Control Pc Sw The “ MDA kEM Series” is a PC sw to control the following amplifier: MDA4-0.6kEM – MDA4-1.2kEM – MDA4-2.4kEM – The devices can be connect via USB or TCP/IP.
  • Page 13 Digital power amplifier MDA-kEM series Click the button, the window Add device will be open. Here the User must select the connection mode USB or TCP/IP and the device after that click the “ADD” button . In the picture below there are added 3 device Device Name Remove the Device Click to open the Edit window...
  • Page 14 Digital power amplifier MDA-kEM series When the USER want to connect the device, after clicked the button, the following window will be shown from this window is possible connect the device and reading all setting from device or connect the device and store the settings done in the user interface www.marani-proaudio.com E-mail: info@marani-proaudio.com...

  • Page 15: Edit Device

    Digital power amplifier MDA-kEM series EDIT DEVICE Following the EDIT window of the MDA4-2.4kEM Amplifier (the MDA4-1.2kEM and MDA4-0.6kEM edit window are the same) On the Edit interface of the amplifier, the overall status of the audio paths routing and the order of the signal processing modules are displayed.
  • Page 16 Digital power amplifier MDA-kEM series Settings Page On this page is possible modify some system's parameter Lan mode, Labels, AmpGain, Recall Mode, Power Save, Bridge Mode, User, Admin, Group Reset LAN: when the Lan Mode is set as Dynamic IP (DHCP) then on the –...

  • Page 17: Recall Mode

    Digital power amplifier MDA-kEM series AMP GAIN Amplifier gain: MDA amplifier is a configurable amplifier, allowing customers to set the maximum input and gain of the amplifier. Max Input (sensitivity): +15dBu or +21dBu (this value are the same – for all devices of the kEM series) Amp Gain: the max gain of the amplifier –...

  • Page 18: Bridge Mode

    Digital power amplifier MDA-kEM series BRIDGE MODE The MDA power amplifier allows the output to be 1/2 or 3/4 bridged. After the bridge takes effect, you can view the change of the output path on the routing page. When the button is enabled then the channel selected is in BTL mode USER User Setting: When the PC sw is logged as administrator, part or all of the output channel functions of the machine can be locked to ensure the...
  • Page 19 Digital power amplifier MDA-kEM series ADMIN it modifies the admin password, the default password is "111111". GROUP RESET Group Reset: after using the group, the last saved group information is still in the input channel. If you need to remove it, you need to reset the required channels in the group reset.

  • Page 20: Single Ended

    Digital power amplifier MDA-kEM series EDIT WINDOW: ROUTING PAGE In the Routing page is visible the processing audio path. In BTL mode the block-scheme and page selector are the following SPEAKER DRIVE SPEAKER DRIVE: it shows the current selected load for each output channel. Power amplifier load status, MDA-kEM series amplifier supports 100V, 70V constant voltage and 8 Ω, 4 Ω, 2 Ω...

  • Page 21: Input Source

    Digital power amplifier MDA-kEM series INPUT SOURCE The MDA-KEM series power amplifiers support analog and Dante signal inputs. The DANTE board (optional) can be plugged on the device. The PC sw check if the board is plugged. If the board is not plugged then the option DANTE is disabled SIGNAL GENERATOR The signal generator allows to feeds all the input channel with a white or pink noise.

  • Page 22: Master Mute

    Digital power amplifier MDA-kEM series POWER SAVE Here is shown the status of the Autosleep and Autostandby AMP PROTECTION When the led is red then the relative channel amplifier is in protection (no output audio) MASTER MUTE when enabled than all output are muted www.marani-proaudio.com E-mail: info@marani-proaudio.com...
  • Page 23 Digital power amplifier MDA-kEM series EDIT WINDOW: LEVEL PAGE The level monitoring interface shows input and output channels level meter, as well as the main amplifier status information. It also allows to set channels gain and mute. The Vu-Meter section shows the level of the inputs (before gain “BG”) and of the outputs (after process “AP”) Input/Output Levels The "Keep Linked CHs Level Offset "...
  • Page 24 Digital power amplifier MDA-kEM series EDIT WINDOW: INPUTS PAGE Channel gain: Input channel Vu-Meter: The user can observe the input enter a value and press Enter to signal in real time. confirm, or drag the thumb fader, or BG represents the signal before select the fader by clicking the gain thumb and use the keyboard...
  • Page 25 Digital power amplifier MDA-kEM series The noise gate is the first process in the input signal path. To enable the process, click "OFF" / ”ON” button. Threshold: it represents the signal level below which the noise gate “close” (mute) the input channel. Once the noise gate is active (gated), an average signal above the threshold (+5dB of hysteresis) will “open”...
  • Page 26 Digital power amplifier MDA-kEM series EDIT WINDOW: OUTPUTS PAGE Each output channel can be set to use IIR, FIR or MIR Xover mode. The conventional IIR has the magnitude slope of the analog filter, but produces a significant phase deviation especially close to the cutoff frequency. The higher the order, the more the phase shift.
  • Page 27 Digital power amplifier MDA-kEM series The output equalizer can work in two different modes 22PEQ 15PEQ + 7 PEQ TARGET PEQ type: PEQ target type: Frequency, gain and Q settings are the same used on input channels www.marani-proaudio.com E-mail: info@marani-proaudio.com...
  • Page 28 Digital power amplifier MDA-kEM series The MDA-KEM provides a low distortion RMS compressor on each output channel. It can be used as a conventional compressor, using the threshold, ratio, knee, atk/rel times and makeup parameters, but it also offers the possibility to enable the AUTO compressor mode. In AUTO mode, the compressor dynamically adjusts the attack and release time according to the comparison of the signal Crest Factor and the RMS value within a period of time.
  • Page 29 Digital power amplifier MDA-kEM series MARANI AEQ (Auto EQ) is an application, developed by Marani Pro Audio in Italy, for performing Acoustic correction of loudspeaker and room responses using DSP based approaches. This tools allows to perform an impulse response measurement of speaker or room and then to design the optimal equalization filter.
  • Page 30 Digital power amplifier MDA-kEM series Launch AEQ from any Input/Output signal path of the MDA kEM series Pc Sw This action will open the AEQ app for assisting in setting up the connected system with automated calculation of IIR/FIR filters' coefficients AEQ : INFO A.
  • Page 31 Digital power amplifier MDA-kEM series MODE Selection * Room correction: The AEQ will work on its Automatic Processes considering the equalization of a large environment as a room * Speaker Correction ： The AEQ will work on its Automatic Processes considering short distances from source and measurement point P.A.
  • Page 32 Digital power amplifier MDA-kEM series AEQ - Measurements Page ：IR Sound card selection The AEQ function needs to call the "ASIO" driver of the sound card. When the "ASIO" driver is installed correctly on the computer, the PC software will automatically detect the "ASIO" sound card device, and then select the corresponding sound card.
  • Page 33 Digital power amplifier MDA-kEM series AEQ - Measurements Page ：IR- System measurement * Mic Test Select "MIC TEST" to test and adjust the output of the audio system and microphone acquisition;as setup, follow the simple diagram showing the right connection ( the dynamic processes, IIR filter, and FIR filter of the current channel will be disabled by default during the measurement process).
  • Page 34 Digital power amplifier MDA-kEM series * IR import and save Click "Import" to import the savedIR pulse data or third-party measurement software to measure the IR pulse data Click "Export" to save the current IR pulse data to the local If fast automatic calculation is required, after the measurement is completed, you only need to select the corresponding mode (IIR/FIR/FIR+IIR) in the "AEQ page-AEQ item", select the Magn and Phase to be processed, and then insert the device.
  • Page 35 Digital power amplifier MDA-kEM series * Windows Adjustment In the upper left corner of each window, multiple types of adjustments are provided, and the window parameters can be zoomed for better observation. * Display of information In the upper right corner of each window, the position information of the current mouse position is prompted.
  • Page 36 Digital power amplifier MDA-kEM series Used in conjunction with the time window, the range in the time window can be dragged and the impulse response can be manually windowed; the reflected sound pulse visible to the naked eye can be avoided, the accuracy can be improved, and the reflected sound can also be taken into account as required.
  • Page 37 Digital power amplifier MDA-kEM series * SETTINGS: You can debug the layout and color of the curves PLOT LAYOUT: "RESET" restores the view layout TRACES COLOR:Freely set different curve colors "RESET" restore curve color "CLOSE" to close the page "CANCEL" cancels the setting "APPLY"...
  • Page 38 Digital power amplifier MDA-kEM series Preset: Preset parameters can be inserted, the overall boost/attenuation of the mid-high frequency can be performed, and multiple segments can be added at the same time (similar to boosting or attenuating a high shelving filter) According to the preset design, it can be seen that the green Target curve changes, and the final output curve (pink) changes...
  • Page 39 Digital power amplifier MDA-kEM series AEQ calculation adjustment If you need fast automatic calculation, you only need to select the corresponding mode, turn on "Auto", and then plug in the device Mode switching : FIR/IIR/FIR+IIF optional, enabling FIR requires external EQ/frequency division mode to use FIR filters (for example: EQ mode: 17PEQ+FIR can be used, 31PEQ can not be used FIR) Only check MAGN: AEQ only operates on the Magnitude, not the phase;...
  • Page 40 Digital power amplifier MDA-kEM series AEQ-Configuration Page: AEQ Configuration MAGN ： Magnitude part Max Boost: The maximum boost range of AEQ operation AEQ processing range, open the "Auto Range" system to automatically select the range or manually design the range You can select multiple ranges that do not need AEQ processing in the AEQ calculation range, such as the red zone range shown in...
  • Page 41 Digital power amplifier MDA-kEM series * AEQ:Post EQ Post EQ can join PEQ after FIR processing * AEQ: save & write Session：select/switch session Create a new session Presets are saved to the current session The current data is quickly written to the device www.marani-proaudio.com E-mail: info@marani-proaudio.com...
  • Page 42 Digital power amplifier MDA-kEM series LISTEN This section is allowing to compare A/B the more results coming from more AEQ sessions Session: select/switch session; RENAME: rename session; DELETE: delete session Presets in the current session , switchable for comparison; RENAME: rename presets; DELETE: delete presets Currently checked preset information STORE: apply the currently checked preset;...

  • Page 43: Technical Data

    482x88x370mm Dimensions (WxHxD) 482x44x355mm / 19x1.7x14 In 19x3.5x14.6 In 5 kg / 11 lb 5 kg / 11 lb 8.5 kg / 18.7 lb Weight Connections USB(A-B)+TCPIP+Dante DC+HF+TEMP Protections © MARANI Pro Audio. All rights reserved. info@ marani-proaudio.com - www.marani-proaudio.com...

  • Page 44: Appendix 1 Group Function

    2) Device list: in this area are show all device added to the main window and the available channel that the User can add to the group 3) Create a Group © MARANI Pro Audio. All rights reserved. info@ marani-proaudio.com - www.marani-proaudio.com...
  • Page 45 Group name = LEFT 3 Channels added to the Group from 3 different devices Clicking on the ADD button, in the main window will be show the “LEFT” Group window © MARANI Pro Audio. All rights reserved. info@ marani-proaudio.com - www.marani-proaudio.com...

  • Page 46: Settings Group

    All channel devices added to the group are un-muted All channel devices added to the group are muted Each parameters edit on the group, will be applied to the channel added to the group in real-time . © MARANI Pro Audio. All rights reserved. info@ marani-proaudio.com - www.marani-proaudio.com...

  • Page 47: Dante Setup

    Appendix 2 DANTE Setup All MARANI MDA kEM Series amplifiers feature a Dante card which can be set up to send and receive audio on a Dante network. This type of connection utilises standard IP networks to transmit high-quality, uncompressed audio.
  • Page 48 MARANI MDA kEM Series amplifiers connected to the Dante network will automatically obtain IP addresses by default, and in most circumstances, there is no need to change the address settings.
  • Page 49 Note: in the "Device Config" menu must be consistent which means that if a Device A is set at 96kHz (DANTE gives available as sampling frequencies options) a Device B must also be set at 96kHz; if they are inconsistent, the routing cannot be performed in the main window. © MARANI Pro Audio. All rights reserved. info@ marani-proaudio.com - www.marani-proaudio.com...

This manual is also suitable for:

Mda4-0.6kemMda4-1.2kemMda4-2.4kem

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