Toa P-924MK2 - Manual (Page 9)

9
70V
25V
8Ω
COM
OT IN
4Ω
DIRECT
4Ω 8Ω
70V
25V
COM
• P-906MK2, P-912MK2
• P-924MK2
8 Ω
10.4 Ω (P-906MK2)
5.2 Ω (P-912MK2)
25 V line
83 Ω (P-906MK2)
41 Ω (P-912MK2)
70 V line
Step 1. Loosen the screw.
Step 2. Shift the impedance selector switch to "8 Ω" position.
Step 3. Retighten the screw.
8 Ω
Insert the jumper strip between 4 Ω (+) and "OT IN."
2.6 Ω
25 V line
21 Ω
70 V line
6.2. Speaker Connections
The unit has 25 V and 70 V outputs for constant voltage speaker system and low impedance output for 4 Ω or
8 Ω speaker loads. Two types of speaker output are available: transformer-balanced output and unbalanced
direct output, which can be selected by the impedance selector switch (P-906MK2 and P-912MK2 only) or the
jumper strip (P-924MK2 only) position.
Connect the speaker system to only one of the speaker outputs.
The speaker connection method differs with amplifier models and their applications.
Refer to the following connection diagrams described for each model.
Impedances indicated in the diagram mean total speaker load impedance.
6.2.1. Connection to 8 Ω, 25 V, or 70 V output (transformer-balanced output)
Step 1. Unscrew the terminal cover.
Step 2. Strip 10 mm (0.39") of insulative jacket from the end of the speaker cable,
as shown in the figure at right.
Step 3. Connect speaker cables to the speaker output terminals.
Step 4. Replace the terminal cover.
10 mm
(0.39”)
[Connection of speaker cable]
Note
It is highly recommended that the low-cut switch be placed in the CUT position to cut off unnecessary low
frequency. This is because the built-in transformer cannot produce low frequencies though the unit has flat
response even in low-frequency range.
Be sure to replace the terminal cover after connection completion.
Because high voltage is generated at the speaker output terminals,
never touch these terminals to avoid electric shock.
WARNING
The terminals marked with the symbol are hazardous live.
The external wiring to these terminals requires installation by an
instructed person.
WARNING