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DDX USER GUIDE V1.0
DDX USER GUIDE
Eye Bolts
All DDX systems have threaded inserts rated for flown installations. Full range enclosures have M8 threaded inserts and subs have M10
inserts. Most commonly these are used in conjunction with shouldered eye bolts for suspending the cabinets using appropriately rated
chain or steel wire. Martin Audio’s HTK00003 (M8) and HTK00004 (M10) are rated for use in flown applications. Note that if you plan to
use alternative eye bolts these must be shouldered cast steel, not formed steel types commonly available from DIY stores. They must have
a safe working load rating compatible with the weight of the cabinets.
All models can be flown in portrait or landscape format. Note that the driver must be rotated when the cabinet is used in landscape mode.
Please see the chapter on grille removal and driver rotation.
We recommend using a minimum of four eye bolts with which to suspend the cabinet irrespective of which orientation is used. In most
applications, two eye bolts are used as the primary support left and right. A third attaches to the rear of the cabinet and is used to adjust
the down-tilt of the cabinet as required. The fourth eye bolt is used to attach a secondary safety line which should be attached to a secure
mounting point, which is independent of the primary flying point, around a girder or similar.
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