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The mixer unit is built around an off-the-shelf 3 rack-unit chassis. The
rear panel of this chassis was removed and replaced with an aluminum frame
to hold the removable audio input and output cards. A rectangular hole
was cut in the front panel to mount the LCD. The display is protected by
a piece of acrylic. Internal components firmly mount to the chassis.
Figure 93 shows the layout of the mixer unit
Mixer unit chassis layout, top view.
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