Toa M-243 Operating Instructions Manual Download Page 5

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Inside of the 

protective cover

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5. NOMENCLATURE AND FUNCTIONS

[Front]

1. Power switch

Power is switched on and off with each depression 

of this switch.

2. Power indicator

Lights when the power switch is set to ON.

3. Assignment keys [ST, 1, 2]

Select  one  of  the  following  output  destinations 

to  which  the  post-fader  input  signals  are  routed. 

Signals are output when pressed.

ST:  Stereo output

1:  MONO 1 output

2:  MONO 2 output

4. Protective cover

Used  to  protect  the  setting  position  of  the 

assignment keys (3) from accidental operation. 

It can be used as a writing plate.

5. Peak indicator

Lights when the output signal reaches 3 dB below 

clipping. Be sure to adjust each input level so that 

the Peak indicator does not light continuously. 

  6. Equalizer controls [EQ: LOw & hIGh]

Adjust stereo output signal tone.

LOW:    Low frequency adjustment (20 Hz, ±15 

dB shelving)

HIGH:   High frequency adjustment (20 kHz, 

±15 dB shelving)

  7. Stereo output level control

Adjusts stereo output level.

  8. Input level controls [1 – 6] 

   (1 – 2: Monaural input, 3 – 6: Stereo input)

Adjust the input level of each channel.

  9. Mute key

Activates muting when pressed. (Indicator lights.)

   [Muting function]

This function works only for the stereo output 

channels.  Attenuates  the  signals  applied  to 

Channels 3 through 6 by detecting signals applied 

to Channel 1 or 2. (This function does not work for 

the monaural output signal.)

 10. Monaural output level controls 

Adjust monaural output level.

4. FEATURES

•  2 monaural inputs, 4 stereo inputs, 1 stereo output, and 2 monaural outputs. Assignable each input signal to 

3 output channels individually. 

•  Sub-input terminals for stereo output channel and each of 2 monaural output channels.
•  Microphone input or line input for monaural input selectable depending on the signal level. Built-in limiter 

circuitry eliminates distortion under excessive input levels. High-pass filter as well as PAD (only for MIC input) 

in the monaural line available by the internal switch settings.

•  Peak indicator to detect clipping.
•  An "Automatic Muting" circuit automatically mutes the stereo output signal by detecting the monaural input 

signal. (ON/OFF switchable)

•  A recording output and equalizer (high and low frequencies) for the stereo output channel.
•  2 channel monaural outputs usable as sum outputs for the stereo output channel individually by the internal 

switch setting.

•  Protective cover for protecting the setting position of each input usable as a writing plate.
•  Knobs supplied in different colors and size easily replaceable depending on the intended use, improving 

operability of the unit.

Summary of Contents for M-243

Page 1: ...his manual to ensure long trouble free use of your equipment TABLE OF CONTENTS 1 IMPORTANT SAFETY INSTRUCTIONS 2 2 SAFETY PRECAUTIONS 3 3 GENERAL DESCRIPTION 4 4 FEATURES 4 5 NOMENClATURE AND FUNCTIONS 5 Front 5 Rear 6 6 internal switch settings 6 7 BLOCK AND LEVEL DIAGRAMS 7 8 DIMENSIONAL DIAGRAM 7 9 SPECIFICATIONS 8 Accessories 8 ...

Page 2: ...ire si l appareil est endommagé au niveau du cordon d alimentation ou de la fiche a été mouillé par un liquide un objet est tombé à l intérieur s il a été exposé à la pluie ou l humidité s il ne fonctionne pas normalement ou s il est tombé Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not ...

Page 3: ...o heaters and never place heavy objects including the unit itself on the power cord as doing so may result in fire or electric shock Since the unit is designed for in door use do not install it outdoors When it gets wet with rain there is a danger of electric shock The apparatus shall be connected to a mains socket outlet with a protective earthing connection The socket outlet shall be installed n...

Page 4: ...e wall outlet securely Switch off the power and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the unit unused for 10 days or more Doing otherwise may cause a fire or electric shock L éclair accompagné d un symbole représentant une pointe de flèche à l intérieur d un triangle équilatéral avertit l utilisateur de la présence d une tension dangereuse à l...

Page 5: ...y for the stereo output channels Attenuates the signals applied to Channels 3 through 6 by detecting signals applied to Channel 1 or 2 This function does not work for the monaural output signal 10 Monaural output level controls Adjust monaural output level 4 FEATURES 2 monaural inputs 4 stereo inputs 1 stereo output and 2 monaural outputs Assignable each input signal to 3 output channels individua...

Page 6: ...ub input terminals Signals from these terminals are sent to stereo output bus Connecting the signal to only L permits it to be input to both L and R 18 Stereo input terminals 3 6 Only CH6 s RCA jacks are internally connected in parallel to phone jacks 19 Monaural input terminals 1 2 Select either MIC or LINE for connection If both are connected LINE input takes precedence The functions below can b...

Page 7: ... R 1 2 1 2 20 dB dB 10 10 20 30 40 50 60 0 R R MONO CH6 L L R L R 1 2 R ST ST CH1 CH2 1 1 2 2 ON OFF PAD 20 dB MUTE BUS BUS STEREO MONO ST SUM POWER ON MUTE MONO 1 MONO 2 INTERNAL SWITCH PEAK LED TURN ON 17 dB CLIP LEVEL 20 dB MONO OUT STEREO OUT REC OUT 4 dB 4 dB 10 dB IN OUT CH6 BA BA BA BA SA SA SA SA SA SA SA SA HA HA HA EBA PAD PAD VOL VOL HPF MONO 1 PEAK LOW HIGH MONO 2 MUTE LIMIT STEREO ASS...

Page 8: ... IHF A When all volume controls are in minimum position Stereo output L R 105 dB or less Monaural Output 1 2 98 dB or less When the stereo monaural 1 2 are in maximum position Stereo output L R 94 dB or less Monaural Output 1 2 95 dB or less Finish Front Panel Alumite black Case Steel black Dimensions 483 w x 46 h x 301 8 d mm 19 02 x 1 81 x 11 88 Weight 3 8 kg 8 38 lb 0 dB 0 775 Vrms Note The des...

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