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3. IMPEDANCE CHANGE
Input impedance is factory-preset to 670 Ω.
To change the impedance, change the rear panel-mounted rotary switch position using a standard
screwdriver.
Notes
• This speaker is designed to be used for high impedance (70 V/100 V). Never connect the speaker to low
impedance line.
• No sound is output from the speaker when the switch is set to the OFF position.
Caution
Never set the switch to "–" position for 100 V line operation, as doing so may result in damage to the speaker.
Line Voltage
100 V
70 V
—
15 W
15 W
7.5 W
10 W
5 W
5 W
2.5 W
Bold figures represent factory-preset values.
4. WIRING
The terminal cover is not mounted to the speaker unit when shipped from the factory.
Note
To complete speaker installation, be sure to attach the terminal cover after finishing cable connections.
If the unit is left without the terminal cover attached, water or moisture may get inside the speaker, causing the
unit malfunction.
4.1. When No Bridge Connection is Required
Step 1. Strip the speaker cable jacket as shown at right.
Step 2. Run the speaker cable through the cable gland.
Step 3. Connect the speaker cable according to the polarity indication at the screw terminal.
Screw terminal
4
Imp.
330 Ω
670 Ω
1 kΩ
2 kΩ
Terminal cover
Speaker cable
COM
COM
HOT
EARTH
EARTH
100V LINE
15W 670Ω
10W 1kΩ
OFF
5W 2kΩ
OFF
OFF
15W 330Ω
2.5W 2kΩ
OFF
5W 1kΩ
7.5W 670Ω
70V LINE
Cable gland
HOT
8
(0.31)
65 (2.56)
Speaker cable
Unit: mm (in)
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