TOA Electronics Portable Speaker H 3 User Manual

OPERATING INSTRUCTIONS  
SPEAKER SYSTEM  
H-3  
H-3WP  
Please follow the instructions in this manual to obtain optimum results from this unit.  
We also recommend that you keep this manual handy for future reference.  
TABLE OF CONTENTS  
1. SAFETY PRECAUTIONS ............................................................................... 2  
2. GENERAL DESCRIPTION ............................................................................ 3  
3. FEATURES ......................................................................................................... 3  
4. HANDLING PRECAUTIONS ......................................................................... 3  
5. NOMENCLATURE AND DIMENSIONS ..................................................... 4  
6. INSTALLATION  
6.1. Contents............................................................................................................ 5  
6.2. Installation Example (Using Two-Gang Electrical Box) .................................... 5  
6.3. Installation Procedures .................................................................................... 6  
7. REMOVING THE FRONT GRILLE .............................................................. 9  
8. OUTDOOR USE (H-3WP ONLY)  
8.1. Installation Precautions ................................................................................... 10  
8.2. Waterproofing the Base Frame ....................................................................... 10  
9. REPAINTING THE FRONT GRILLE .......................................................... 10  
10. PROTECTION CIRCUITRY INFORMATION ........................................... 11  
11. EQUALIZATION ............................................................................................... 11  
12. SPECIFICATIONS ........................................................................................... 12  
Accessories ............................................................................................................ 12  
 
2. GENERAL DESCRIPTION  
TOA's H-3 and H-3WP are wall-mounted 2-way speakers featuring wide horizontal dispersion.  
The H-3 is designed for indoor use, and the H-3WP is designed for outdoor use.  
Note: Protect the H-3WP from rain when installing. (Refer to p. 10 "Waterproofing the base frame.")  
3. FEATURES  
• Smooth curved surface blends in with the interiors of most modern buildings.  
• Wide horizontal dispersion covers wide areas when mounted on the wall.  
• Two 10 cm woofers feature a neodymium magnet which ensures powerful, low distortion low-frequency  
sound reproduction.  
• 2.5 cm soft dome tweeter also employs a neodymium magnet for clear, low distortion high-frequency sound  
reproduction and high power-handling capability.  
• Built-in crossover network circuitry features sharp cut-off characteristics that realize uniform energy radiation  
while suppressing unwanted input signals to the woofer or tweeter.  
• Two lock tabs secure the enclosure to the supplied base frame. The base frame can be mounted directly to  
a 2-unit electrical box.  
• A built-in matching transformer permits the speaker to be used for both high- and low-impedance  
applications. For low-impedance applications, either the 8 terminal or 16 terminal can be selected.  
Impedance can be easily changed from outside the unit.  
• Detachable input connectors with dual positive and negative terminals for bridge connections.  
• Enclosure is made of fire-resistant ABS resin (UL Standard 94V-0 Grade).  
• Front grille is specially designed for ease of refinishing and repainting.  
4. HANDLING PRECAUTIONS  
• To clean, wipe the unit with a dry cloth. When the unit gets very dirty, use a cloth damped in a neutral  
detergent. Never use benzine, thinner or chemically-treated towel, as this could damage the unit's form or  
finish.  
• Avoid using the H-3WP speaker on the beach because the speaker's life can be greatly shortened by sea  
breezes.  
3
 
5. NOMENCLATURE AND DIMENSIONS  
The illustrations assume that the front grille is mounted to the speaker.  
(Unit: mm)  
[Front]  
[Side]  
[Rear]  
Connector for impedance selection  
295  
129  
Lock tab  
Speaker  
Detachable input connector  
[Bottom]  
Front grille  
• Base Frame (Accessory)  
203  
(
)
1.6 1.5  
120 *1  
(
)
5.6 5.5  
46 *2  
ø21.6  
1 For mounting to a wall  
2 For mounting to two-gang electrical box  
*
*
Dimensions in parentheses ( ) apply to the H-3WP.  
4
 
6. INSTALLATION  
6.1. Contents  
Check to be sure that the following components are available in a complete set before installation:  
Speaker ..... 1  
Front grille ..... 1  
Base frame ..... 1  
Screws and washers  
for electrical box  
Machine screw  
M4 x 25 ..... 4  
Unified screw  
(UNC-No.6-32) x 32 ..... 4  
Plain washer ..... 4  
Spring washer ..... 4  
6.2. Installation Example (Using Two-Gang Electrical Box)  
Connector for impedance selection  
Detachable input connector  
Front grille  
Wall  
Speaker cable  
Base frame  
Commercial two-gang electrical box  
Screw/washer for electrical box  
Speaker  
Note  
To mount to two-gang electrical box, use either the supplied "M4 machine" or "Unified" screw depending on  
the type of the electrical box.  
5
 
6.3. Installation Procedures  
Step 1. Base frame mounting  
• The base frame can be mounted on the wall directly or using a commercial two-gang electrical box.  
• The base frame hole (21.6 mm in diameter) can also be used for conduit fitting.  
Conduit  
Base frame  
Step 1-1. Run the speaker cables from the wall through the base frame hole (21.6 mm in diameter), then strip  
the cables about 5 mm from the cable end.  
• Usable cable: Solid or stranded cable (0.2 – 2.5 mm2 corresponding to AWG24 – 14)  
Step 1-2. Mount the base frame on the wall using four screws.  
Notes  
• The speaker cannot be mounted if the base frame is not properly positioned. Ensure that the base  
frame hole is situated on the upper side of the frame when mounted.  
• Use nuts and bolts (not supplied with the unit for direct wall mounting) that are appropriate for the  
structure and composition of the wall.  
• When using two-gang electrical box, use either the supplied "M4 machine" or "Unified" screw  
depending on the type of electrical box.  
• Protect the H-3WP from rain when installing it outdoors. (Refer to p. 10 "Waterproofing the base  
frame.")  
[Direct wall mounting]  
[Wall mounting by means of a commercial two-gang  
electrical box]  
Base frame  
Speaker cable  
About 5 mm  
Speaker cable  
Two-gang electrical box  
Use either the supplied M4 machine screw or Unified  
screw depending on the type of electrical box.  
Use screws that are appropriate  
for the structure of the wall.  
6
 
Step 2. Wiring and impedance settings  
Step 2-1. Unplug the detachable input connector from  
the speaker socket, and loosen the screws  
of the terminal with a screwdriver.  
Detachable input connector  
Step 2-2. Insert the stripped cable ends into the input connector, and retighten the terminal screws.  
[Single connection] [Bridge connection]  
From power amplifier  
To next speaker  
Note  
When not bridging the connection, tighten the screws of unused terminals to prevent resonance  
noise.  
Step 2-3. Attach two sockets to the impedance selection connector to select the desired impedance.  
The impedance is preset to 330 (30 W for 100 V line and 15 W for 70 V line).  
[When selecting 8 ]  
[When selecting 16 ]  
[When selecting 330 ]  
(Preset by the factory)  
Socket  
Note  
The H-3 and H-3WP speakers are designed to be used for both 70 V and 100 V line applications.  
When using the 100 V line, do not select the "170 " impedance, since the speaker itself or power  
amplifier may be damaged.  
7
 
Step 2-4. Insert the detachable input connector into the speaker socket.  
Detachable input connector  
Step 3. Speaker and grille mounting  
Step 3-1. Rotate the two speaker lock tabs away from their locking position on the edge of speaker.  
Lock tab  
Speaker  
Step 3-2. After aligning the speaker with the base frame, rotate the two lock tabs back into position to clamp  
the speaker to the base frame. (Temporary fixing state)  
Base frame  
Base frame  
Lock tab  
The state that the speaker is  
clamped to the base frame  
Rotate both the left and right lock tabs  
in the direction indicated by the arrow.  
Note  
When mounting the speaker, take care not to damage the diaphragms of both the woofers and  
tweeter.  
Step 3-3. Position the speaker and tighten the two locking screws.  
Locking screws  
(2 places, left and right)  
8
 
Step 4. Set the front grille to the speaker so that the three stud screws align with the corresponding stud  
receptacles, then push the grille onto the speaker.  
Front grille  
Stud screw  
(3 places indicated by arrow)  
7. REMOVING THE FRONT GRILLE  
Step 1. Insert a slotted screw driver into each of the three  
stud receptacles to widen a gap between the  
grille and wall.  
Step 2. Pull the grille by hand from the three positions  
evenly and gradually.  
Stud receptacle  
(3 places)  
Caution  
If you pull only from one or two of the three  
positions (stud receptacles), the front grille may  
be damaged. Be sure to pull from the three  
positions evenly and gradually.  
1
2
9
 
8. OUTDOOR USE (H-3WP ONLY)  
8.1. Installation Precautions  
• The H-3WP features drip-proof construction for permanent outdoor installation. However, do not dash water  
over it when cleaning as this may cause damage to the speaker components.  
• When installing the H-3WP in a snowy area, protect the speaker so that it is not covered with snow.  
8.2. Waterproofing the Base Frame  
The H-3WP's base frame has a gasket for watertightness. To  
Base frame  
prevent water from getting into a gap between the base frame  
and wall, apply commercial caulking agent over the inside of  
the gasket before mounting the base frame.  
Note  
Take care not to apply too much caulking agent. If it spreads  
to the lock tab, the lock tab does not smoothly rotate and the  
speaker may not be mounted or detached.  
Caulking agent  
Gasket  
9. REPAINTING THE FRONT GRILLE  
Follow the procedures below to change the color of the grille:  
Step 1. Wipe dirt off the front grille with a soft cloth moistened with a detergent before painting. Do not use  
volatile liquids such as thinner.  
Step 2. Uniformly spray a thin coating of paint over the grille changing the spraying positions gradually.  
Notes  
• Do not use a roller or brush to paint because the grille mesh could be clogged with paint.  
• Use paint that is appropriate for the material of the front grille (grille and frame).  
[H-3]  
Grille: Rolled steel plate  
Frame: Fire-resistant ABS resin  
[H-3WP] Grille: Stainless steel  
Frame: Fire-resistant ABS resin  
• Follow the instructions on the paint when painting.  
Step 3. After the paint dries, repeat Step 2 to repaint.  
Note  
Be sure to repeat Step 2 at least twice. If you paint only once, the paint may not be uniformly applied  
or the grille mesh may be clogged.  
10  
 
10. PROTECTION CIRCUITRY INFORMATION  
• The speaker's tweeter has built-in overload protection circuitry. (The woofer does not have the circuitry.)  
If there is an extremely high level input signal to the tweeter, the overload protection circuitry is activated and  
cuts off the signal input to the tweeter.  
• A sudden drop of the sound volume level during speaker operation indicates that the overload protection  
circuitry has been activated. In such a case, reduce the amplifier volume and wait. The protection circuitry is  
automatically reset after approximately ten seconds. After the circuitry is reset, set the volume at a lower  
level than before.  
Caution  
This overload protection circuitry does not completely protect the tweeter. Depending on the nature of the  
excessive signal applied to the speaker, there may be damage to the speaker before the protection circuitry  
can operate. Also, depending on the duration of the excessive input signal, the protection circuitry may be  
damaged and will not recover. Take special care that the excessive input is not applied to the speaker during  
use.  
11. EQUALIZATION  
• The H-3 and H-3WP speakers are designed to provide good quality sound without additional signal  
processing. However, by equalizing them as shown below, sounds can be made more powerful and  
intelligible.  
• Using a digital signal processor, use the following equalization settings.  
[When not using a subwoofer]  
[dB]  
+20  
Filter  
HPF  
PEQ  
PEQ  
PEQ  
PEQ  
Frequency  
63 Hz  
Gain  
Q
+10  
0
0.707  
100 Hz  
220 Hz  
500 Hz  
+9 dB 2.871  
–8 dB 2.871  
+5 dB 2.871  
-
-
-
-
10  
20  
30  
40  
5,000 Hz +1.5 dB 0.305  
20  
50  
100  
500  
1k  
5k  
10k  
20k  
[Hz]  
Frequency  
-
Gain  
[When using a subwoofer]  
[dB]  
+20  
Filter  
HPF  
PEQ  
PEQ  
PEQ  
PEQ  
Frequency  
63 Hz  
Gain  
Q
+10  
0
0.707  
100 Hz  
220 Hz  
500 Hz  
+5 dB 2.871  
–8 dB 2.871  
+5 dB 2.871  
-10  
-20  
-30  
-40  
5,000 Hz +1.5 dB 0.305  
20  
50  
100  
500  
1k  
5k  
10k  
20k  
[Hz]  
Frequency  
-
Gain  
11  
 
12. SPECIFICATIONS  
Model No.  
H-3  
H-3WP  
Enclosure Type  
Power Handling  
Sealed type  
150 W (continuous program input, 8 load)  
50 W (continuous pink noise input, 8 load) *  
30 W (16 or high impedance)  
Rated Input  
Rated Impedance  
8 , 16 Ω  
70 V line: 170 (30 W), 330 (15 W), 670 (7.5 W), 1.3 k(3.75 W)  
100 V line: 330 (30 W), 670 (15 W), 1.3 k(7.5 W)  
89 dB (1 W, 1 m, installation in 1/2 free sound field)  
100 – 20,000 Hz (–10 dB, installation in 1/2 free sound field)  
4,000 Hz  
Sound Pressure Level  
Frequency Response  
Crossover Frequency  
Speaker Element  
Low frequency: 10 cm cone woofer (neodymium magnet) x 2  
High frequency: 2.5 cm dome tweeter  
Input Terminal  
Usable Cable  
Detachable screw terminal, (+)(–) 2 each (for bridge connection)  
Solid or stranded cable: 0.2 – 2.5 mm2 (corresponding to AWG24 – 14)  
Fire-resistant ABS resin (UL 94V-0), black  
Finish  
Enclosure  
Front Grille  
Grille Frame  
Base Frame  
Rolled steel plate, white, paint  
Stainless steel, white, paint  
Fire-resistant ABS resin (UL 94V-0), white, paint  
Rolled steel plate  
Stainless steel  
Dimensions  
Weight  
295 (w) x 318 (h) x 129 (d) mm  
3.3 kg (base frame included)  
* Pink noise input (50 – 20,000 Hz), 24 hours  
Note: The design and specifications are subject to change without notice for improvement.  
• Accessories  
Base frame ................................................. 1  
Screws for electrical box mounting  
M4 x 25 .................................................. 4  
Unified (UNC-No.6-32) x 32 ................... 4  
Plain washer ........................................... 4  
Spring washer ........................................ 4  
533-06-065-60  
 

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