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MX-1242A
Professional Audio Mixer
Copyright 2004 Inter-M Corporation

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Summary of Contents for Inter-m MX-1242A

  • Page 1 MX-1242A Professional Audio Mixer Copyright 2004 Inter-M Corporation...
  • Page 2: Table Of Contents

    MX-1242A Professional Audio Mixer Contents Welcome ............................. 3 Unpacking ..........................3 Warnings ..........................3 Operation..........................5 Professional Audio Mixer ......................6 Features ............................6 Top Panel Controls ........................7 Rear Connector Panel ......................11 Connectors and Cables......................13 Connections..........................14...
  • Page 3: Welcome

    A personal welcome to you from the management and employees of Inter-M Thank you for purchasing this fine Inter-M product. All of us here at Inter-M are dedicated to providing you with the highest quality products and the best value.
  • Page 4 MX-1242A Professional Audio Mixer 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other devices (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades, with one wider than the other.
  • Page 5: Operation

    MX-1242A Professional Audio Mixer Operation Make certain that power amps, speakers and input sources are properly connected before switching on. Keep volume levels at minimum gain and equalization set to 0dB position before switching on. NOTE: The system’s operation is delayed by approximately three seconds after pressing the AC Mains power switch.
  • Page 6: Professional Audio Mixer

    MX-1242A Professional Audio Mixer MX-1242A Professional Audio Mixer Features Powerful Multi-Channel Mixer • 12 input channels and four output channels plus two Aux Sends. Connect microphones, instruments, CD or cassette players and mix decks in several effective configurations. Versatile EQ Controls •...
  • Page 7: Top Panel Controls

    MX-1242A Professional Audio Mixer Top Panel Controls...
  • Page 8 MX-1242A Professional Audio Mixer 1. Input Gain (Trim) This knob is used to adjust the input signal to its optimal level. Set the TRIM Control so that the PEAK Indicator (8) lights only occasionally, thereby achieving the best balance of S/N and dynamic range. For the MIC INPUT, the gain range is –16dB to –60dB.
  • Page 9 MX-1242A Professional Audio Mixer 7. PFL Switches These buttons are used to monitor each channel’s output status via the HEADPHONE jack and MONITOR OUT. When monitoring the channel’s input signal, PFL position allows you to hear the input at a level unaffected by the position of the channel’s fader, Aux Send and Pan settings.
  • Page 10 MX-1242A Professional Audio Mixer 17. EFX Return Master 1 and 2 These knobs control the L/mono or stereo level received at EFX RETURNS 1 and 2, controlling the level mixed to the Stereo L/R buss. 18. Aux Output Faders These faders control the Aux Send 1 and 2 output levels.
  • Page 11: Rear Connector Panel

    MX-1242A Professional Audio Mixer Rear Connector Panel 1. Mic Inputs 1-12 Each channel provides a low impedance (“low-Z”) input on a balanced 3-pin XLR jack for mic-level sources such as condenser and dynamic microphones. NOTE: When phantom power is switched on, +48V power is sent to the 3-pin XLR jacks of ALL channels.
  • Page 12 MX-1242A Professional Audio Mixer 7. Monitor Outputs These are unbalanced 1/4” tip-sleeve phone jack outputs. The MONITOR OUT can be used for an alternate monitoring system. The MONITOR OUT signal source is: • Stereo L/R buss – when no PFL switch is engaged, the Monitor Out receives the same signal as the master Stereo buss.
  • Page 13: Connectors And Cables

    MX-1242A Professional Audio Mixer Connectors and Cables Use of low quality or improper cables to connect the equipment can result in exaggerated or deficient high frequency response, degradation of signal to noise ratio, and other problems. Use of proper cables is essential if the full potential of your sound equipment is to be achieved.
  • Page 14: Connections

    MX-1242A Professional Audio Mixer Connections...
  • Page 15: Specifications

    MX-1242A Professional Audio Mixer Specifications Maximum Output Level Main Out L/R +24dB@600Ω, 0.5% THD at 1kHz Aux/EFX Send 1-2 +20dB@600Ω, 0.5% THD at 1kHz T.H.D. (-14dB @ 600Ω, 20Hz – 20kHz) <0.1% Frequency Response Main Out @ 600Ω 20Hz – 20kHz, +1dB, -2dB @ +4dB Aux/EFX Send 1-2 @ 600Ω...
  • Page 16 Korea and China, and sales and marketing operations located in Japan, Europe, and the U.S.A. With more than 850 employees around the globe, Inter-M is well-poised for further growth and expansion.

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