When Using The Directivity Angle At 0° Modes; Changing The Directivity Angle To Between 15° And 45° Modes - Toa HX-7B Operating Instructions Manual

WARNING
7.1. When Using the Directivity Angle at 0° mode
Leave the positions of the bolts holding the rear angle bars unchanged as their default.
However, be sure to retighten all the bolts with the designated tightening torque to secure the rear angle bars.
Tightening torque: 3 N·m
7.2. Changing the Directivity Angle to Between 15° and 45° modes
Before changing angle modes, lay out a protective sheet, corrugated cardboard or other soft material on a flat
surface, and perform all work on the speaker with its front baffle facing downward. As the speaker assembly is
quite heavy, it is recommended that at least two persons be involved in the modification work. As an example,
the HX-7 Series speakers shown in the figure below are arranged in a direction that exposes the speaker's left-
side protection covers.
Fulcrum for
angle adjustment
Protection cover
Step 1. Remove one nut and bolt for each rear angle bar (as
indicated by the black arrow in the figure at right).
Notes
• The nut and bolt indicated by the white arrow become
the fulcrum for angle adjustment. Since the rear angle
bar can be moved at the fulcrum with the nut and bolt
assembled there, do not loosen or detach.
• Do not change the fulcrum position. If changed, the
directivity angle mode will not assume its specified value.
Step 2. Align the hole in the rear angle bar (disconnected in Step
1 above) with the desired directivity angle mode position,
then reinsert the bolt in the bracket and bar, and securely
tighten the bolt with a nut.
8
Tighten the bolts securely, as instructed below.
Failure to follow instructions precisely could result in a falling speaker
and potential personal injury.
• Ensure that all bolts are securely inserted as far as their threads go,
then securely fasten each bolt with a nut.
• Tighten all the bolts with the designated tightening torque.
For tightening, use a Phillips screwdriver, or open- or box-end wrench.
Angle adjustment
Rear angle bar
hole
Rear angle bar Rear bracket
Rear bracket
Do not remove.
Angle adjustment holes
Rear bracket
1
Rear angle bar
Remove.
0° mode
15° mode
30° mode
45° mode
Tightening torque:
3 N·m