Power Requirements
MPS-488X Current Draw
The current draw of the MPS-488X is dependent on two factors, the level of the audio signal(s) being reproduced by the connected IntelligentDC loudspeakers and the model(s) of IntelligentDC loudspeakers that are connected to the outputs.
The maximum power draw (> 10 seconds) of an MPS-488X is 1350 watts. Users are required to provide adequately sized breakers and electrical supply cords rated to carry this load. To calculate amperage, divide 1350 watts by the available electrical supply voltage, e. g., 1350 watts divided by 230 V AC is 5.9 amps.
MPS-488X Voltage Requirements
The operating voltage range of an MPS-488X is 100 - 240 V AC, 50 or 60 Hz. Make sure the voltage measured at the appliance end of the power cord is within the operating voltage range before applying power to the MPS-488X.
Caution
Damage to the IntelligentDC power supply and/or connected loudspeakers may occur if the voltage of the electrical source is not within the operating voltage range.
Note
For best performance, the AC cable voltage drop should not exceed 10 V, or 10 percent at 115 V and 5 percent at 230 V. Measure the AC voltage at the appliance end of the power cord to verify the voltage is within the operating voltage range.
Circuit Breaker Requirements
The circuit Breakers used in the Meyer Sound MDM-5000 are well suited for use with MPS-488X IntelligentDC power supplies and other Meyer Sound products:
European MDM-5000 includes ETI model number:
KZS-1M 1p+N A C16/0.03, 6kA, which includes an RCD (residual current device) with a C-type tripping time constant and 30 mA RCD.
US MDM-5000 includes Eaton model:
QCR2020 - CIRCUIT BREAKER 2-Pole, 20 A, 120/240 V AC
Circuit protection devices for main and branch circuits of any power distribution system used in conjunction with MPS-488X IntelligentDC power supplies should use similarly specified devices to avoid nuisance tripping.
Note
Many RCCB’s (residual current circuit breakers) are sensitive to high-frequency noise in the Line-Neutral path and may false/nuisance trip. If required, make certain the residual current device is not sensitive to high-frequency noise or artifacts. Line-to-Ground and Neutral-to-Ground capacitance can cause an imbalance between the current carrying conductors in a cable or a conduit, potentially causing RCCB nuisance tripping. Consult with a licensed electrician or electrical engineer when designing electrical distribution systems.
Electrical Safety Guidelines
Pay close attention to these important electrical and safety guidelines.
This Meyer Sound product requires a grounded outlet. Always use a grounded outlet and plug.
Do not use a ground-lifting adapter or cut the AC plug ground pin.
Keep all liquids away from the MPS-488X to avoid hazards from electrical shock.
Do not operate the MPS-488X if the power cable is frayed or broken.
Powering Loudspeakers
Note
For information about cable requirements for a particular loudspeaker, refer to its operating instructions.
Caution
Make sure loudspeaker cables are wired correctly.
Power off the MPS-488X.
Connect audio sources (from a mixer or processor) to the MPS-488X channel inputs.
Use the MPS-488X Link switches to route channel inputs to the desired channel outputs (see “Link Switches” on page 5).
Connect the loudspeakers to the MPS-488X channel outputs. Use composite cables (such as Belden® 1502 or equivalent) wired for both DC power and balanced audio and outfitted with the appropriate connectors.
Power on the MPS-488X and monitor the LEDs on its front panel to verify the connections (see “Blue Voltage LEDs (1–8)” on page 3 and “Green Load Current LEDs (1–8)” on page 4).
Check loudspeaker LEDs to verify whether the loudspeakers are ready to reproduce audio.
Enable output from the audio sources (from the mixer or processor) connected to the MPS-488X.
Tip
For connection between the MPS-488X and IntelligentDC loudspeakers, two cables can be used: a 2-conductor cable for DC power and a 3-conductor cable for balanced audio, both attached to a single Phoenix connector on each cable end. This approach enables the conductor diameters of the DC cable to be increased for longer cable runs.
MPS-488XP with Eight ULTRA-X20XP Loudspeakers
MPS-488XP with Eight ULTRA-X20XP Loudspeakers
Note
HMS-15 loudspeakers require power from two contiguous channels of the MPS- 488X. If audio signal is present on both channels connected to an HMS-15, audio signals are summed by the loudspeaker’s input electronics.
Caution
Make sure loudspeaker cables are wired correctly.
Telemetry
The MPS-488X transmits telemetry data via a standard Ethernet network to a computer running Meyer Sound’s Nebra software. The Nebra software displays many parameters of the MPS-488X and the connected loudspeakers, including signal level, temperature, fan speed, and output voltage. A mute function for each channel is also available.
Nebra Software, MPS-488X Sidebar Panel - Details, Inventory, Network Tabs
Firmware
There are three ways to update the firmware of an MPS-488X, automatically and manually using Nebra software and manually using a web browser.
Automatic Firmware Update
When the Nebra computer is connected to the Internet, firmware updates are automatically downloaded. When an MPS-488X is connected to the Nebra computer, Nebra will prompt users if a newer version of firmware is available to be uploaded to the MPS-488X.
Manual Firmware Update - Nebra
Firmware can be manually uploaded using Nebra software when the computer is connected to an MPS-488X. Select an MPS-488X in the Device Workspace to open the sidebar panel, then click the three-dot more icon. Select Upload Firmware from the contextual menu to start uploading the most recent version of the firmware Nebra has downloaded.
Note
Connect the Nebra computer to the Internet and launch the Nebra software. Nebra will automatically download the most recent versions of all available Meyer Sound device firmware, including the firmware for the MPS-488X.
Nebra Software, MPS-488X Sidebar Panel, Contextual Menu
Manual Firmware Update – Web Browser
When manually updating the firmware using a web browser and the MPS-488X web server, please contact Technical Support to receive the current MPS-488X firmware file by visiting meyersound.com/contact and selecting the appropriate options from the drop-down menus.
To update the firmware using a web browser, establish a network connection between the computer and the MPS- 488X, then follow the steps below.
Open a web browser and enter either:
The IPv4 address of the MPS-488X, e. g.,
http://192.168.0.120.By default (and following a factory reset), this is
192.168.0.120. The current IPv4 address is displayed in the Nebra Sidebar.mps-488x_<serial number>local, e. g.,
http://mps- 488x_22278410.local/The <serial number> is the serial number of the MPS-488X found on the rear panel.
Enter the login credentials for the MPS-488X. The default value is “admin” for both the username and password.
Click the Advanced settings tab.
Web Browser MPS-488X Interface, Dashboard Tab
Click the Choose File button in the Normal Mode Update section.
Web Browser MPS-488X Interface, Advanced Settings Tab
Navigate to the new MPS-488X firmware file, e. g., 1.0.0.1266-20230120-0914.mps488XFirmware, then click Open.
Click the Update Normal Mode Image button to start the firmware upload.
Web Browser MPS-488X Interface, Advanced Settings Tab, Firmware Upload in Progress
Click Yes when prompted that the device will be disconnected.
When the upload is complete, the MPS-488X will reboot.
To confirm the firmware upload successfully, reload the web page and log in.
Select the Advanced settings tab again and confirm the Current Normal Mode Version firmware listed corresponds to the firmware version uploaded.
Repeat steps 4-9, but this time choosing Recovery Mode Update and the corresponding firmware file, e. g., 1.0.0.1266-20230120-0914.mps488XRecoveryFirmware.
After logging back into the web page, confirm that both the Current Normal Mode Version and Current Recovery Mode Version correspond to the uploaded files.
Logs
Each MPS-488X logs and saves various parameters. These logs can be downloaded to the Nebra computer by selecting an MPS-488X in the Devices Workspace, clicking the three-dot more menu in the Sidebar Panel, and selecting Download Logs.
Nebra Sidebar Contextual Menu
These logs include uptime, temperature, power supply status, channel status, fan, and power data.
Nebra Software
Meyer Sound’s Nebra software includes functions and monitoring of MPS-488X power supplies: monitoring of performance, operational controls, and firmware management. An Ethernet network connection is all that is required between one or many MPS-488X and a computer running Nebra software.
