Essential Maintenance; Tools Required; Replacing The Amplifier Module; Replacing A Low Frequency Driver - Martin Audio MLA User Manual

Multi-cellular loudspeaker array
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MLA System
USER GUIDE

Essential Maintenance

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Tools Required

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Replacing the amplifier module

There is no need to remove a cabinet from an array to replace a module if you can safely access the rear of the MLA speaker, the
module can be replaced in situ. Disconnect all power, audio and network connections from the module. Undo all M5 Countersunk
screws holding the rain cowl assembly with the appropriate size hex head driver. Once the rain cowl is removed the module can
be eased out of the cabinet, there are no additional screws holding it in place. Once you have removed it sufficiently to access
the connections disconnect both Speakon NL8's and remove the module. Fitting the replacement is a reversal of the removal.
Offer the module to the cabinet and connect the NL8s making sure they have made a positive latch. Before proceeding and
further you may wish to re-connect to the array to make sure that everything is connected and working perfectly, see details
later in this guide. Replace the rain cowl assembly and all screws. Reconnect all connections, ensure that the module powers up,
the fan will briefly run at full speed and the red power LED will light. Connect U-Net cables to the two ports and ensure that both
U-Net LEDs light green. Connect audio input and if required output connections. You will need to upload the correct settings to
the array if the system is in use at the time, please see the section in the Vu-Net chapter for detailed instructions on how to do
this.

Replacing a low frequency driver

Coming Soon

Replacing a mid driver

MLA System User Guide V2.1
33

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