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5.
To replace the drive unit, ensure the 5" gasket is intact and complete – replace if necessary. Reconnect
the cables to the drive unit (note the polarity detailed above) and then sit the drive unit into its
mounting location, ensuring that the mounting holes line up.
6.
Replace the M4x10 socket cap machine screws with their flat & spring washers and ensure all
machine screws are started in their threads before tightening. Tighten opposing bolts, working
around the drive unit until all bolts are appropriately tightened. Be careful not to overtighten as this
will distort the drive unit chassis.
7.
Replace the occlusion bowl in the enclosure. Ensure it is the correct orientation – there are cutouts in
the underside to account for the excursion of the 5" drive units. Press down in the centre of the bowl
to compress the gasket and allow the mounting holes to line up. Replace the four M5 socket bolts
(with their spring and larger flat washers) and start each bolt by hand, before tightening down to
ensure the bowl is fixed in place.
8.
Replace the waveguide into the enclosure – note that there is a precise fit at the throat of the
waveguide with the aluminium mounting plate in the enclosure, so ensure this is located properly
before attempting to retighten the bolts.
9.
With the waveguide in the correct orientation, replace the M6x16 button head socket screws and
retighten.
10. Replace the grille as described above.
Page 28 of 37
R5 User Manual
v1 December 2023
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