Toa M-243 Operating Instructions Manual
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Toa M-243 Operating Instructions Manual

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STEREO MIxER

TABLE OF CONTENTS

2. SAFETY PRECAUTIONS ............................. 3
3. GENERAL DESCRIPTION ........................... 4
4. FEATURES ................................................... 4
Front ............................................................... 5
Rear ............................................................... 6
Thank you for purchasing TOA's Stereo Mixer.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
OPERATING INSTRUCTIONS
6. INTERNAL SwITCh SETTINGS ................. 6
7. BLOCK AND LEVEL DIAGRAMS ................ 7
8. DIMENSIONAL DIAGRAM .......................... 7
9. SPECIFICATIONS ........................................ 8
Accessories ................................................... 8
M-243

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Summary of Contents for Toa M-243

  • Page 1 9. SPECIFICATIONS ........8 Accessories ........... 8 5. NOMENCLATURE AND FUNCTIONS ..5 Front ............... 5 Rear ............... 6 Thank you for purchasing TOA’s Stereo Mixer. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

  • Page 2: Important Safety Instructions

    1. IMPORTANT SAFETY INSTRUCTIONS • Read these instructions. • Protect the power cord from being walked on or pinched particularly at plugs, convenience • Keep these instructions. receptacles, and the point where they exit from the apparatus. • Heed all warnings. • Only use attachments/accessories specified by the • Follow all instructions. manufacturer. • Do not use this apparatus near water. • Use only with the cart, stand, tripod, bracket, or table specified • Clean only with dry cloth.

  • Page 3: Safety Precautions

    CAUTION Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage. use, immediately switch off the power, disconnect wARNING the power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the unit in this condition as this AVERTISSEMENT may cause fire or electric shock. · If you detect smoke or a strange smell coming when Installing the Unit from the unit.

  • Page 4: General Description

    · Install the equipment rack on a stable, hard floor. shock. Fix it with anchor bolts or take other arrangements The lighting flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operation and maintenance (servicing) instruction in the literature accompanying the appliance. 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’intérieur de l’enceinte du téléviseur, dont la magnitude peut être suffisante pour constituer un risque de choc électrique pour les personnes. Le point d’exclamation à l’intérieur d’un triangle équilatéral avertit l’utilisateur de l’existence d’instructions d’utilisation et d’entretien (réparation) dans la documentation fournie avec l’appareil. 3. GENERAL DESCRIPTION The M-243 is a stereo mixer equipped with 2 monaural inputs, 4 stereo inputs, 1 stereo output, and 2 monaural outputs. It can be mounted in an EIA component rack (1U size*). * 1U size = 44.5 mm or 1.75" (standard size)

  • Page 5: Features

    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.

  • Page 6: Rear

    [Rear] 12 13 14 15 16 17 11. AC inlet 16. Monaural sub-input terminals Connect the supplied power cord. Signals from these terminals are sent to each monaural output bus (Mono 1 and Mono 2). 12. Functional earth terminal Hum noise may be generated when external 17. Stereo sub-input terminals equipment is connected to the unit. Connecting Signals from these terminals are sent to stereo this terminal to the functional earth terminal of the output bus. Connecting the signal to only "L"...

  • Page 7: Block And Level Diagrams

    7. BLOCK AND LEVEL DIAGRAMS STEREO MONO ASSIGN L R 1 2 (IN/OUT) LINE LIMIT –10 dB -10 dB MUTE CH1, CH2 (MONO INPUT) (20 dB) MUTE MUTE STEREO STEREO CONTROL + 4 dB –60 dB HIGH PEAK CH3 – CH6 (STEREO ST SUM INPUT)

  • Page 8: Specifications

    9. SPECIFICATIONS Power Source M-243 L: 120 V AC, 60 Hz M-243 301H: 220 – 240 V AC, 50/60 Hz Power Consumption M-243 L: 10 W M-243 301H: 12 W Monaural Input Line: –10 dB*, 10 kΩ, unbalanced, φ 6.3 mm phone jack (2 P) Mic: –60 dB*, 1 kΩ, balanced, 3-pin XLR connector Mic (Pad): –40 dB*, 1 kΩ, balanced, 3-pin XLR connector Stereo Input (L, R) –10 dB*, 10 kΩ, unbalanced, RCA jack Auxiliary Stereo Input +4 dB*, 50 kΩ, unbalanced, φ 6.3 mm phone jack (2 P) Stereo Output (L, R) +4 dB*, 1 kΩ, unbalanced, φ 6.3 mm phone jack (2 P) Monaural Output +4 dB*, 1 kΩ, unbalanced, φ 6.3 mm phone jack (2 P) REC Output (L, R) –10 dB*, 1 kΩ, unbalanced, RCA jack Frequency Response 20 Hz – 20 kHz (+1, –2 dB) T.H.D. 0.01 % or less (1 kHz, rated input/output) Noise Level (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...

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