Operation; Installation Precautions; Adjustment; Input Sensitivity Selection - Toa AV-60S-AM Operating Instructions Manual

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7. OPERATION

After completing all audio and control connections, connect the power supply, and check the power indicator.

Note:

When the heat sink temperature exceeds 130°C (266 °F), the protection circuit begins to operate to disconnect

the output from the circuit. The disconnected output is automatically restored as soon as the temperature

returns to the normal operating range.

CAUTION

Keep the amplifier over 10 cm (3.94") away from

objects that may obstruct air flow to prevent the

unit's internal temperature rise.

Output level is adjustable with individual -10dBV/-20dBV switch. For those audio source equipments which

always have relative high output level, such as CD players, please set the input sensitivity selection switch to

-10dBV position; otherwise, set to -20dBV position.

Output level is adjustable with master volume control. For music play or announcement, adjust the proper

volume control or sensitivity so that the signal indicator lights intermittently. Note that the sound quality is

downgraded when the peak indicator remains lit.

When a Remove Volume Control is connected, attenuating the value of the potentiometer will reduce the

volume level. This attenuation works for the audio signal after adjusted by its master volume control.

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