M-864D Digital Stereo Mixer

  • Overview
  • Specification
  • Downloads


  • The M-864D is a 4U rack mountable Digital stereo mixer having 22 input channels including 8 monaural input channels and 7 stereo input channels, 6 output channels including 4 monaural output channels and 1 stereo recording output channel, and 4 bus channels. It is equipped with digital signal processing functions such as Automatic resonance control function (ARC(*1)), Feedback suppressor function (FBS), Automatic stereo input mute function (AUTO MUTE or Ducker), and Equalizer. Advanced acoustic compensation can be automatically performed without using an acoustic measuring instrument. Furnished with various function setting buttons and 14 analoge volume faders, the M-864D can be operated without need for use of a PC. However, it can also be operated by connecting the PC or optional Remote control panel. It can be mounted in an EIA component rack (4U size). (*1) Automatic Resonance Control function automatically creates the filter curve to improve sound clarity by measuring the acoustic characteristics inherent in architectural space.

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  • Specification
    Power Source 220-240 V AC, 50/60 Hz
    Power Consumption 30 W
    Frequency Response 20 Hz – 20 kHz, ±1 dB
    Sampling Frequency 48 kHz
    Dynamic Range 100 dB or more
    Distortion 0.03 % or less, 1 kHz, +4 dB(*2) input/output, 20 Hz – 20 kHz BPF
    Crosstalk -80 dB or less, 1 kHz
    Input Monaural input, 8 channels, removable terminal block (3P)Phantom power (+24 V DC, 10 mA, ON/OFF switchable for each channel)
    Gain setting (settable for each channel)
    :PAD ON Gain min., +4 dB(*2) (max. +24 dB(*2)), 10 kΩ, electronically-balanced
    Gain max., -14 dB(*2) (max. +6 dB(*2)), 10 kΩ, electronically-balanced
    :PAD OFF Gain min., -10 dB(*2) (max. +10 dB(*2)), 7 kΩ, electronically-balanced
    Gain max., -56 dB(*2) (max. -36 dB(*2)), 7 kΩ, electronically-balanced
    Stereo Input (L, R), 7 channels (1-A, 1-B, 1-C, 2-A, 2-B, 2-C, front-mounted input)
    RCA jack (stereo mini jack provided on the front panel): -10 dB(*2) (max. +10 dB(*2)), 10 kΩ ” Trim gain for each individual channel: – to 0 dB (except front-mounted input)
    ※ 1-A (L), 1-B (L), and 1-C (L) are mixed after passing through each trim gain circuit (the same applies to R channel)※ 2-A (L), 2-B (L), and 2-C (L) are mixed with front-mounted input after passing ” through each trim gain circuit (the same applies to R channel)
    Output Output, 4 channels, +4 dB(*2) (max. +24 dB(*2)), applicable load 600 Ω or more,electronically-balanced, removable terminal block (3P)
    REC OUT (L, R): -10 dB(*2) (max. +10 dB(*2)), applicable load 1 kΩ or more, RCA jack
    Gain is adjustable.
    AD Converter 24 bits
    DA Converter 24 bits
    Preset Memory 16
    Signal Processing Section
    Automatic Resonance Control (ARC) Function Automatic EQ curve creation by ARC, 4 channels (each output channel),settable independently on each channel,
    ARC measuring start switch ×1, ON/OFF LED ×1
    Feedback Suppressor Function Feedback suppressor filter creation, 8 channels (each monaural input channel),settable independently on each channel,
    ON/OFF switch ×8, ON/OFF LED ×8
    Filter 8 channels (each monaural input channel), settable independently on each channel,high-pass filter: 20 Hz – 20 kHz
    Tone Controller BASS, Low-shelving filter: 20 – 500 Hz, ±15 dBMID, parametric equalizer: 20 Hz – 20 kHz, ±15 dB
    Q: 0.267 – 69.249
    TREABLE, high-shelving filter: 6 – 20 kHz, ±15 dB
    10 channels (each monaural input channel, each stereo mixing input channel),settable independently on each channel
    Equalizer Parametric equalizer: 20 Hz – 20 kHz, ±15 dB, Q: 0.267 – 69.2494 channels (each output channel)
    Matrix 12×4
    Crosspoint Gain – to 0 dB in 1 dB steps
    Automatic Mute Function Stereo input section matrix, independent control
    Function Input PAD (-16 dB) control, low cut (cutoff frequency: 100 Hz) control,analog output attenuator (-6 dB, -12 dB, -18 dB, -24 dB, -36 dB, -42 dB) control,front panel operation lock function, stereo summing function,function setting panel (3 rotary encoders)
    Front Panel Section
    Input Level Indicator 3-point LED, 12 channels (each monaural input channel, stereo 1L, 1R, 2L, 2R)
    Output Level Indicator 8-point LED, 4 channels (each output channel)
    Auto Resonance Control (ARC) Measurement ARC measuring start switch ×1, ON/OFF LED ×1
    Feedback Suppressor (FBS) Function ON/OFF switch ×8, ON/OFF LED ×8
    Low Cut ON/OFF switch ×8, ON/OFF LED ×8
    Stereo Summing ON/OFF switch ×2, ON/OFF LED ×2
    Tone Control BASS, MID, TREBLE/Settable on the function setting panel, 10 channels(each monaural input channel, stereo 1L, 1R, 2L, 2R)
    Monaural Input, Analog Setting Gain setting, PAD ON/OFF, Phantom power ON/OFFSettable on the function setting panel, 8 channels (each monaural input channel)
    Stereo Input, Analog Setting Trim settingSettable on the function setting panel, 6 channels (1-A, 1-B, 1-C), (2-A, 2-B, 2-C)
    REC OUT, Gain Setting Gain settingSettable on the function setting panel, 2 channels (REC OUT L, REC OUT R)
    Preset Memory Switching Preset selection switch ×4, ON/OFF LED ×4
    Front Panel Operation Lock Operation lock switch ×1, ON/OFF LED ×1
    Operation Status Indication Operation status LED ×3
    Function Setting Panel Rotary encoder ×3, 10-point position indication LED ×3, Function mode LED ×3
    Analog Volume Fader Input volume fader ×10, Output volume fader ×4,2 faders linkable with supplied gang bar
    Control Section
    Contact Input 8 channels, open voltage: 24 V DC, short-circuit current: 5 mA,removable terminal block (10P),
    Contact output 8 channels, no-voltage make contact, contact capacity: 24 V DC/100 mA,removable terminal block (10P),
    Remote Control Panel 2 channels, Maximum number of units: 8 units per channel24 V DC input ×2, termination ON/OFF switch ×1, removable terminal block (10P)
    Maximum total cable length (star wiring): 800 m (total for 2 channels)
    Maximum cable length (daisy chain wiring): 400 m per channel
    Note: In daisy chain wiring, the number of units differs depending on the cable length.
    Star wiring and daisy chain wiring cannot be used together.
    Type of cable: Shielded CPEV cable (a pair of data cable and a pair of power supply cable) or shielded Cat 5 twisted pair cable for LAN (CAT5-STP)
    Network Network I/F: 1 channel of 10BASE-T/100BASE-TX (auto-negotiation)RJ45 connector, connection via switching hub
    Network protocol: TCP/IP
    Connection cable: Shielded Cat. 5 or higher twisted pair cable for LAN (Cat. 5-STP or better)
    Maximum cable length: 100 m (between M-864D and switching hub)
    Operating Temperature 0 ℃ to +40 ℃ (32 ゜F to 104 ゜F)
    Operating Humidity 90 %RH (no condensation)
    Finish Panel: Aluminum, hairline, black, Case: Surface-treated steel plate
    Dimensions 482.6 (W) × 177.1 (H) × 157.2 (D) mm (19 × 6.97″ × 6.19″)”
    Weight 5.1 kg (11.24 lb)
    Accessories Power supply cord (2 m (6.56 ft)) ×1, removable terminal plug (3P) ×12,large type removable terminal plug (10P) ×2, small type removable terminal plug (10P) ×1, fader gang bar ×4, protective cover ×1, rack mounting screw ×4,
    CD-ROM (containing setup software) ×1
    Option Remote control panel: ZM-9011/9012/9013/9014AC adapter: AD-246(*3)(When using the Remote Control Panel)
    (*3) Consult your TOA dealer when using an equivalent adapter
    Personal Computer Requirements
    Requirements CPU: Pentium 4, 2 GHz or fasterMemory: 1.5 GB or more (2 GB recommended)
    Display: 1024 × 768 resolution or higher
    Free Hard Disk Space: 16 MB or more, however 600 MB or more is required for the 32-bit version or 1.5 GB or more for the 64-bit version when “.NET Framework“ is not yet installed
    Optical Drive:CD-ROM drive, Network Adapter:10BASE-T or faster connection
    OS Windows XP Service Pack 3 or later, Windows Vista (32/64-bit) Service Pack 1 or later,Windows 7 (32/64-bit)
    Required Component .NET Framework 4 Client Profile
    *Windows is a registered trademark or trademark of Microsoft Corporation in the United States and/or other countries.
    *Pentium is a trademark of Intel Corporation.
    *Other company names and products are also trademarks of individual companies


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