Toa DH-120 User Manual

DH-110 DH-120

STRAIGHT HORN SPEAKER

INSTRUCTION MANUAL

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

WARNING

• The standard supplied mounting bracket is not designed for use in locations exposed to strong winds and could become dislodged, resulting in possible personal injury. To ensure that the installation can withstand expected wind forces, always use the supplied mounting bracket in combination with a separately prepared bracket.

• Install the unit only in a location that can structurally support the weight of the unit and the mounting bracket. Doing otherwise may result in the unit falling down and causing personal injury and/or property damage.

• Use nuts and bolts that are appropriate for the ceiling's or wall's structure and composition. Failure to do so may cause the speaker to fall, resulting in material damage and possible personal injury.

• Tighten each nut and bolt securely. Ensure that the bracket has no loose joints after installation to prevent accidents that could result in personal injury.

• Attach the safety wire to the unit when mounting in locations high above the ground. Failure to do so could result in personal injury if the speaker should later fall for any reason.

• Protect the unit from exposure in snowy areas, as the weight of snow build-up could cause the speaker to fall, resulting in personal injury.

1. SAFETY PRECAUTIONS

• Be sure to read the instructions in this section carefully before use.

• Make sure to observe the instructions in this manual as the conventions of safety symbols and messages regarded as very important precautions are included.

• We also recommend you keep this instruction manual handy for future reference.

2. EQUIPMENT CONFIGURATION

The DH-110 speaker is comprised of the DHA-11 (Horn A) and the DH-11B component (Horn B, Horn C and other parts). The DH-120 speaker is comprised of the DHA-11 and the DH-12B component (Horn B, 2-driver unit adapter and other parts).

3. USABLE DRIVER UNITS

Any TOA driver unit can be used. However, an optional thread adapter is required when using the driver unit TU-50S or TU-50L (both old models). Refer to the section "Installation Precautions."

4. SPECIFICATIONS (common to the DH-110 and DH-120)

Horn A Horn B 2-driver unit adapter Horn C Mounting bracket Bird net Rubber gasket A Throat net Rubber gasket B Hex bolt (M12), plain washer (M12), spring washer (M12) M6 hex bolt with spring washer, M6 washer M4 screw

6 each (stainless steel)

8 each (stainless steel)

2* (stainless steel)

* Although two screws are supplied, only one screw is used to assemble the DH-110.

Parts to make up the component

Component Model No. DHA-11 DH-11B DH-12B

DH-110 DH-120

Speaker Model No.

110 dB (1 W, 1 m) (when TU-630 or TU-650 series is used) 180 – 6,000 Hz (when TU-630 or TU-650 series is used) +10° or –20° (when using separately-prepared mounting bracket of the type that permits changes

of speaker mounting angles) Inch-threaded screws Ivory

5.3 kg (speaker only)

Output Sound Pressure Level Frequency Response Variable Vertical Mounting Angle

Driver Unit Coupling Screws Color Weight

Note: The design and specifications are subject to change without notice for improvement.

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

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

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

ø518

114

198255

255

320

320466

190

172

110

200

R51

ø11

40 60

2-ø10

15 1515 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