Toa DH-120 - Manual (Page 2)

133-01-105-6C
The supplied mounting bracket could become dislodged by
strong winds, resulting in possible personal injury. To prevent
this from expected wind forces, additionally use a separately
prepared bracket as shown in Figure 1.
WARNING
• An optional thread adapter is required for TOA old-model driver unit TU-50S or TU-50L
(threaded in mm) because the speaker's coupling screw is threaded in inch. When using such
driver unit, attach the thread adapter (part code No. 703-11-002-60) to Horn C (DH-110) or to
the 2-driver unit adapter (DH-120), then mount the driver unit to the adapter. (Refer to Figure 2.)
• Install the speaker as shown in Figure 1 and take care that rain water does not enter the
driver unit from the front of the speaker. Hanging the speaker as shown in Figure 3 or
installing it sideways could cause rain water to collect inside the driver unit, resulting in
speaker failure.
• When facing the speaker upward, its mounting angle must be less than 10°. Exceeding this
limit could cause rain water to collect inside the horn and no sound could be output.
• When mounting two driver units to the DH-120, make sure that both units are of the same
model number. If they differ in model number or power handling capacity, sound
interference may occur, resulting in distorted sound or, at worst, speaker failure.
5. INSTALLATION PRECAUTIONS
6. ASSEMBLY
The following figure applies to the assembly of both the DH-110 and DH-120.
7. DIMENSIONAL DIAGRAM
Ground side
Separately-arranged mounting bracket
Driver unit
Thread adapter
Horn
[Figure 1]
[Figure 2]
[Figure 3]
M12 hex bolt, spring washer, plain washer
M12 hex bolt, spring washer, plain washer
M4 screw
2-driver unit adapter (DH-12B)
Mounting bracket
Rubber gasket B
Throat net
Horn B
M6 hex bolt with spring washer, and plain washer
M6 hex bolt with spring washer, and plain washer
Horn A (DHA-11)
M4 screw
Horn C (DH-11B)
Bird net
Rubber gasket A
Horn guard*
884 968
2-M12 holes with effective depth of 15 mm
Horn B
Mounting bracket
(Both for fixing separately-arranged mounting bracket)
2-M12 holes with effective depth of 15 mm
(Both for fixing separately-arranged mounting bracket)
[Dimensions of bracket mounting holes]
466
ш
518
ш
518
114
198
255 255
320 320 466
190
172
110
200
11
R51
ш11
40
60
2-ш10
15 15 15 15
DH-120 DH-110
[Horn B dimension]
Mounting bracket
Horn B
* Attached to protect Horn A from damage caused during transit
or installation. Remove them when installing the speaker.
Unit: mm