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Firmware Update - RL18S
The firmware update and amplifier removal procedure for the RL18S is identical to that of the
RL12/15, with the exception of the Micro USB port, which is located on the side of the amplifier,
rather than the top.
1.
Disconnect the unit from AC supply and
disconnect all analog audio cabling.
2.
Remove the 12 mounting screws using a
standard Phillips head screwdriver. Notice the
top center screw indicated in the diagram, this is
not a mounting screw, but a jacking screw
location.
3.
If the amplifier remains fixed to the loudspeaker
after removing the 12 mounting screws, it is
because the amplifier to loudspeaker gasket is
binding them together. To free them, use the
top center jacking location to free the amplifier
from the loudspeaker.
4.
To do so replace the keeper screw from the
center location with one of the mounting screws
already removed
5.
Turn the mounting screw clockwise, pushing
against the loudspeaker and forcing the
amplifier’s corner out. If the amplifier remains
fixed to the gasket it may be necessary to jack
another corner away from the loudspeaker.
6.
Once free, carefully lift the amplifier from the loudspeaker and disconnect the electrical leads
at the coupling. Set the amplifier module aside.
7.
Locate the Micro USB input port at the side of the amplifier and connect the user supplied
micro cable to the amplifier.
8.
Connect AC power to the amplifier module and follow the firmware update quick start guide.
WARNING: Once AC power is applied to the amplifier module, avoid direct contact with the
protective cage surround the amplifier.
9.
When the firmware update is complete, disconnect AC power from the amplifier, disconnect
the USB cable, and then re-secure the amplifier module to the loudspeaker.
