4. WIRING DIAGRAMS
4.1. PJ-64
Rotary switch
10 kΩ
OFF
OFF
OFF
3.3 kΩ
1.7 kΩ
8 Ω
0
COM
COM
HOT
Matching
transformer
(Factory-preset wiring)
4.2. PJ-304
Rotary switch 2
Network
Rotary switch 1
2 kΩ
1 kΩ
670 Ω
500 Ω
330 Ω
16 Ω
0
8 Ω
0
COM
8 Ω
8 Ω
0
8 Ω
OFF
OFF
70 V
OFF
100 V
SP1
SP2
COM
HOT
Matching
transformer
(Factory-preset wiring)
The input power (impedance) is factory-preset to 6 W
(1.7 k
Ω
) for 100 V line and 3 W (1.7 k
Ω
) for 70 V line.
When changing this setting, use a standard screwdriver
to rotate the rotary switch on the upper side of the
speaker to the desired position
The input power (impedance) is factory-preset to 30 W
(330
Ω
) for 100 V line.
When changing this setting, use a standard screwdriver
to rotate the rotary switches on the upper side of the
speaker to the desired position.
(1) When operating at high impedance (100 V and 70 V lines);
Set the rotary switch of "LINE VOL." to "100 V" or "70 V" and that of "INPUT" to the input power to be used.
(2) When operating at low impedance;
Set both rotary switches of "LINE VOL" and "INPUT" to 8
Ω
.
Important
Be sure to follow the instructions below. Failure to do so may cause damage to the speaker.
• Switch off the amplifier's power when changing the input power.
• Never make 8
Ω
connection in a 100 V or 70 V line system, as excessive input power is applied to the speaker,
possibly resulting in damage. (PJ-304 only)
5. INPUT POWER (IMPEDANCE) CHANGE
Note
Shown above is an example when the input power is
set to 3 W on 100 V line and 1.5 W on 70 V line.
Note
Shown above is an example when the input power is
set to 20 W on 100 V line.
5.2. PJ-304
5.1. PJ-64
Impedance
1.7 k
Ω
3.3 k
Ω
10 k
Ω
100 V line
6 W
3 W
1 W
70 V line
3 W
1.5 W
0.5 W
Input power
30 W
20 W
15 W
10 W
5 W
100 V line
330
Ω
500
Ω
670
Ω
1 k
Ω
2 k
Ω
70 V line
170
Ω
250
Ω
330
Ω
500
Ω
1 k
Ω
