OPERATING INSTRUCTIONS
H-1
SPEAKERSYSTEM
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS
2
3
3
3
4
2. GENERAL DESCRIPTION
3. FEATURES
4. HANDLING PRECAUTIONS
5. NOMENCLATURE
6. INSTALLATION
6.1. Direct Wall/Ceiling Mounting Without Using an Electrical Box
6.2. Mounting the Speaker to an Electrical Box Using The Adapter Frame
6.3. Mounting the Speaker Directly to an Electrical Box
6.4. Removing the Trim Piece
5
8
9
9
7. REPAINTING THE GRILLE AND TRIM PIECE
8. PROTECTION CIRCUITRY INFORMATION
9. EQUALIZATION
10
11
12
10. SPECIFICATIONS
12
12
Accessories
TOA Corporation
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2. GENERAL DESCRIPTION
TOA's H-1 is a cylinder-shaped, small flush-mount 2-way speaker featuring high sound quality.
3. FEATURES
• The H-1 Speaker System features, flush-mount speaker design with a rotatable cylinder-type enclosure. The
speaker's smooth curved surface allows it to blend in with the interiors of most modern buildings.
• The speaker's small ( 8 x 5 cm) woofer features a magnetic circuit (employing a neodymium magnet) that
ensures powerful sound reproduction.
• The one-inch balanced dome tweeter features ferro-fluid to ensure superb transient response characteristics
for clear, high frequency sound output and high power-handling capabilities.
• The speaker's 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.
• The H-1 Speaker System is designed with an emphasis on installation ease and safety, as well as easier
conduit wiring when an electrical box is installed.
• The cylinder-shaped speaker's mounting angle can be easily adjusted for up to 45 degrees rotation.
• A built-in matching transformer permits the speaker to be used for both high- and low-impedance
applications. For low-impedance applications, either the 4 or 16 terminal can be selected. Impedance
can be easily changed from outside the unit.
• Detachable screw terminals facilitate connection. Dual positive and negative terminals also facilitate bridge
connections.
• Both the speaker enclosure and Trim Piece are made of fire-resistant ABS (UL Standard 94: V-0 Grade).
• All external parts have been specially selected for ease of refinishing and repainting.
4. HANDLING PRECAUTIONS
The speaker is not magnetically shielded. Install it as far away as possible from television sets or computer's
CRTs to avoid degradation in picture quality.
3
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5. NOMENCLATURE
[Side Panel]
[Front Panel]
[Side Panel]
H-1 speaker
Grille
Trim Piece
[Side Panel]
For mounting to the Adapter Panel
Mounting bracket
[Rear Panel]
For mounting to an electrical box
Accessory (Adapter Panel)
4
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6. INSTALLATION
6.1. Direct Wall/Ceiling Mounting Without Using an Electrical Box
Step 1. Adapter Panel mounting
1-1. Using the supplied hole pattern sheet as a guide,
make an opening of the specified size in the wall or
ceiling panel.
Note
The thickness of the suitable wall or ceiling panel is 9
to 30 mm.
1-2. Loosen the two board clamp screws.
Board clamp
1-3. Place the Adapter Panel inside the opening, and set
the panel to the desired position using the positioning
tabs.
Adapter Panel
Positioning tab
5
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1-4. Clamp the wall or ceiling panel using the two board
clamps, and secure with the clamp screws.
Step 2. Wiring and impedance changes
2-1. Pull the cables out of the mounting hole in the wall or
ceiling, then strip the insulation back about 5mm from
the cable ends.
Note
Usable cable: Solid cable or stranded cable (0.2 mm2
- 2.5 mm2) (Corresponding to AWG No.
24-14)
About 5 mm
2-2. Remove the detachable input connector from the
speaker, then loosen the connector screws with a
small slot screwdriver.
2-3. Insert the stripped cable ends into the input
connector, and tighten the connector screws.
• When not bridging
connections
• When bridging
connections
Note
From amplifier
When not bridging connections, be sure to also
tighten the screws of the terminals not in use to avoid
vibration or rattling noise.
To next
speaker
6
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2-4. Attach two impedance selector sockets to the
connector to select the desired impedance. Preset to
830
(12 W for 100 V line and 6 W for 70 V line).
Note
The speaker is designed to be used for both 70 V and
100 V line applications. When using the 100 V line,
do not select the "420 " impedance, since the
speaker itself or power amplifier may be damaged.
• When selecting 4
• When selecting 16
Impedance selector socket
• When selecting 830
(preset by the factory)
2-5. Insert the detachable input connector into the
speaker socket.
Step 3. Mounting the speaker and Trim Piece
Adapter Panel
3-1. Align the four inward-facing holes in the speaker's
mounting bracket with the corresponding holes in the
Adapter Panel mounting tabs, then mount the
speaker to the panel using the four supplied screws
(M4 x 25 screws with both the spring washers and
plain washers).
H-1 speaker
7
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3-2. Loosen the angle adjustment screws. After adjusting
the angle, retighten the screws.
Tip
The mounting angle can be adjusted for up to 45 °.
Since the mounting bracket is marked with mounting
angles at 15 ° intervals, use this marking as a guide
when adjusting the angle.
Stud screw
Angle adjustment screw
3-3. Align the two securing clips on the Trim Piece with
the speaker's two stud screws, then push the Trim
Piece onto the speaker until the Trim Piece is snug to
the wall or ceiling surface.
H-1 speaker
Securing clip
Trim Piece
Stud screw
6.2. Mounting the Speaker to an Electrical Box Using The Adapter Panel
The H-1 speaker system can be mounted to walls or ceilings using an electrical box*. Mount the Adapter
Panel to the electrical box as shown below. Further mounting procedures are the same as detailed in Steps 2
and 3.
Distance between mounting holes (A) x (B):
254 mm (10")
x
66.7 mm (2 5/8") or
1
255.6 mm (10 /10") x 55.6 mm (2 3/16")
Electrical box
Adapter Panel
H-1 speaker
Memo
Electrical box mounting screws are attached to the H-1 speaker.
8
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