33.Speaker output terminal

Connects speakers of which total impedance matches the amplifier's output impedance. (Refer to p. 95 "Speaker Output Terminal Connections.")

34.AC inlet

Connects the supplied power cord.

35.RS-232C serial communication port Connector for communications with a personal computer or control equipment.

36.Functional earth terminal

Hum noise may be generated when external equipment is connected to the unit. Connecting this terminal to the functional earth terminal of the external equipment may reduce the hum noise.

Note: This terminal is not for protective earth.

37.Mode switch

Selects the unit's operation mode (either matrix or mixer).

The switch is factory-preset to the matrix mode.

38.Control-I/O connection terminal

Connect a 10 kΩ (linear taper) variable resistor or input the DC voltage of 0 to +10 V to the remote volume control terminals (REMT VOL 1 and 2) when remotely adjusting the volume.

To perform other remote control operation, connect the ZM-9001 or ZM-9002 Zone Manager. Input and output terminals (IN and OUT) are used to change the unit's internal status or output internal status data to external equipment after having received various control signals.

39.Blank panel (accessory)

Attach the blank panels to open slots.

40.Module slots

900 Series or 9000 Series modules can be inserted into these slots.

(Refer to p. 88 "MODULE INSTALLATION.")

41.Preamplifier output

and Power amplifier input terminals

[M-9000]

There are 2 preamplifier output terminals.

For unbalanced connection, connect the unit's Hot and Earth terminals to the connected equipment's Signal and GND terminals, respectively. (Leave the unit's Cold terminal free.)

0 dB, 600 Ω, balanced type

[A-9060DH/9120DH/9120DL]

There are 2 preamplifier output terminals and 2 power amplifier input terminals.

Connecting a plug to the power amplifier input terminal internally disconnects the preamplifier section from the power amplifier section.

Both terminals: 0 dB, 300 Ω, unbalanced type

[A-9060S/9120S/9240SH]

There are 2 preamplifier output terminals and 1 power amplifier input terminal.

Connecting a plug to the power amplifier input terminal internally disconnects the preamplifier section 1 from the power amplifier section.

To make unbalanced connection to the preamplifier output 2, connect the output's Hot and Earth terminals to the external equipment's Signal and GND (or Earth) terminals, respectively.

(Leave the output's Cold terminal open.) Preamplifier output 1: 0 dB, 300 Ω, unbalanced Preamplifier output 2: 0 dB, 600 Ω, balanced

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