Toa M-633D - Manual (Page 7)

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6. NOMENCLATURE AND FUNCTIONS
[Front]
1. Power switch
Press this switch to turn on the power. To turn off
the power, press this switch again.
2. Power indicator
Lights green when the power is switched on.
3. Assignment switch cover
A cover for protecting the setting positions of the
Assignment switches (16) and ARC switch (4). It
can be used as a writing plate.
4. ARC switch
Press this switch to enable the Automatic
Resonance Control function (ARC).
Hold down this switch for 3 seconds to start the
ARC measurement. Release the switch when the
ARC operation indicator (8) begins to flash. (See
p. 13.) Use a fine-tipped screwdriver to press in
the switch.
5. Output level indicators
Light green when the output sound level is
appropriate.
Light red when the output signal reaches 6 dB
below clipping level.
Light orange when the ARC switch is pressed if the
ARC filter has been previously set.
6. Summing output keys
Output the stereo input signals of each channel to
the stereo "L" and "R" outputs (17) in stereo mode
when not pressed and in monaural mode (summing
output) when pressed. (See p. 10.)
7. Stereo input level control knobs
Adjust the stereo input levels.
8. ARC operation indicator
Lights green when the ARC function is operating.
9. Monaural output level control knobs
Adjust the monaural output levels.
10. Stereo output level control knob
Adjusts the stereo output level.
11. Front-mounted stereo input jack
–10 dB*, 10 kΩ, unbalanced type.
Connect a stereo mini plug to this jack.
It is internally connected in parallel to the STEREO
IN 1 (24) on the rear panel. Adjust the input level
with the STEREO 1 input level control knob (7).
* 0 dB = 1 V
12. Input level indicators
Light green when the output sound level is
appropriate.
Light red when the internal signal reaches 6 dB
below clipping level.
13. FBS keys
Press this switch to enable the Feedback
Suppression function (FBS).
Holding down the key for 1 second switches
between on and off states of the FBS function.
14. FBS operation indicators
Light green when the FBS function is operating.
15. Monaural input level control knobs
Adjust the monaural input levels.
16. Assignment switches
Used to select the output destination to which the
post-fader input signals of each input channel are
routed. (See p. 9 .)
Press in an individual switch to set the
corresponding output destination as follows. To
release, press it in again.
1: MONO 1 output, 2: MONO 2 output,
ST: STEREO output.
Use a fine-tipped screwdriver to press in the
switch.