M-864D
數位混音處理單元
M-864D
M-864D 數位立體聲混音器保留了其前身M-633D 的基本功能和可操作性，但增加了諸如類比感覺推子操作、8 個單聲道和7 個立體聲輸入通道、遙控器操作和微調等多功能功能。
隨著它的發布，TOA透過其專有的共振控制技術實現了清晰的聲音，可用於酒店宴會廳、多功能廳和其他舉辦各種類型活動的設施。
- 每台15個輸入和5個輸出通道
- 配備數位訊號處理功能，例如自動諧振控制功能（ARC）、回授抑制功能（FBS）、自動立體聲輸入靜音功能（自動靜音或閃避器）和均衡器
- 無需使用聲學測量儀器即可自動執行高級聲學補償
- 配有各種功能設定按鈕和14個模擬音量推子
- 無需使用 PC，可透過連接 PC、選購的遠端控制面板或透過 iPad 應用程式進行操作
(*2) 0 dB = 0.775 V
電源
100 – 120 V AC, 60 Hz
消耗功率
30 W
頻率響應
20 Hz – 20 kHz, ±1 dB
取樣頻率
48 kHz
Dynamic Range
100 dB or more
失真率
0.03 % or less, 1 kHz, +4 dB* input/output, 20 Hz − 20 kHz BPF
Crosstalk
−80 dB or less, 1 kHz
輸入
Monaural input, 8 channels, removable terminal block (3 P)
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* (max. +24 dB*), 10 kΩ, electronically-balanced
Gain max., −14 dB* (max. +6 dB*), 10 kΩ, electronically-balanced
: PAD OFF Gain min., −10 dB* (max. +10 dB*), 7 kΩ, electronically-balanced
Gain max., −56 dB* (max. −36 dB*), 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* (max. +10 dB*), 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)
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* (max. +24 dB*), 10 kΩ, electronically-balanced
Gain max., −14 dB* (max. +6 dB*), 10 kΩ, electronically-balanced
: PAD OFF Gain min., −10 dB* (max. +10 dB*), 7 kΩ, electronically-balanced
Gain max., −56 dB* (max. −36 dB*), 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* (max. +10 dB*), 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)
輸出
4 channels, +4 dB* (max. +24 dB*), applicable load 600 Ω or more,
electronically-balanced, removable terminal block (3 P)
REC OUT (L, R): –10 dB* (max. +10 dB*), applicable load 1 kΩ or more, RCA jack Gain is adjustable.
electronically-balanced, removable terminal block (3 P)
REC OUT (L, R): –10 dB* (max. +10 dB*), applicable load 1 kΩ or more, RCA jack Gain is adjustable.
A/D轉換器
24 bits
D/A Converter
24 bits
Preset Memory
16
Automatic Resonance Control (ARC)
Automatic EQ curve creation by ARC, 4 channels (each output channel), settable independently on each channel
Feedback Suppressor (FBS)
Feedback suppressor filter creation, 8 channels (each monaural input channel),settable independently on each channel
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 dB MID, 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
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 – 69.249 4 channels (each output channel)
Matrix
12 x 4
Crosspoint Gain
−∞ to 0 dB in 1 dB steps
Automatic Mute
Stereo input section matrix, independent control
功能
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,
system lock function, stereo summing function, Control knobs (3 rotary encoders)
analog output attenuator (−6 dB, −12 dB, −18 dB, −24 dB, −36 dB, −42 dB) control,
system lock function, stereo summing function, Control knobs (3 rotary encoders)
Front Panel
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)
Automatic Resonance Control (ARC) Measurement
ARC switch x 1, ARC operation indicator x 1
Feedback Suppressor (FBS)
Feedback Suppressor switch x 8, Feedback suppressor indicator x 8
Low Cut
Low cut switch x 8, Low cut indicator x 8
Tone Control
BASS, MID, TREBLE/Settable with control knobs, 10 channels
(each monaural input channel, stereo 1L, 1R, 2L, 2R)
(each monaural input channel, stereo 1L, 1R, 2L, 2R)
Monaural Input, Analog Setting
Gain setting, PAD ON/OFF, Phantom power ON/OFF
Settable with control knobs, 8 channels (each monaural input channel)
Stereo Input, Analog Setting
Trim setting Settable with control knobs, 6 channels (1-A, 1-B, 1-C), (2-A, 2-B, 2-C)
REC OUT, Gain Setting
Gain setting Settable with control knobs, 2 channels (REC OUT L, REC OUT R)
Preset Memory Switching
Preset memory key x 4, Preset memory indicator x 4
Front Panel Operation Lock
System lock key x 1, System lock indicator x 1
Operation Status Indication
Operation status indicator x 3
Function Setting Panel
Control knob x 3, 10-point position indication LED x 3, Tone control mode
indicator x 1, Gain control mode indicator x 1, Trim control mode indicator x 1
indicator x 1, Gain control mode indicator x 1, Trim control mode indicator x 1
Analog Volume Fader
Input volume fader x 10, Output volume fader x 4,
2 faders linkable with supplied gang bar
2 faders linkable with supplied gang bar
Control Section
Control Input
8 channels, open voltage: 24 V DC, short-circuit current: 5 mA,removable terminal block (10 P)
Control Output
8 channels, no-voltage make contact, contact capacity: 24 V DC/100 mA,removable terminal block (10 P)
Remote Control Panel
2 channels, Maximum number of units: 8 units per channel
24 V DC input x 2, termination switch x 1, removable terminal block (10 P)
Maximum total cable length (star wiring): 800 m or 870 yd (total for 2 channels)
Maximum cable length (daisy chain wiring): 400 m or 435 yd 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)
24 V DC input x 2, termination switch x 1, removable terminal block (10 P)
Maximum total cable length (star wiring): 800 m or 870 yd (total for 2 channels)
Maximum cable length (daisy chain wiring): 400 m or 435 yd 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 or 110 yd (between M-864D and switching hub)
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 or 110 yd (between M-864D and switching hub)
工作溫度
0 to 40 ºC (32 to 104 ºF)
工作濕度
90 %RH (no condensation)
外觀
Panel: Aluminum, hairline, black, Case: Surface-treated steel plate
尺寸
482.6 (w) x 177.1 (h) x 157.2 (d) mm (19” x 6.97” x 6.19”)
重量
5.1 kg (11.24 lb)
附屬品
Power supply cord (2 m (6.56 ft)x 1, Removable terminal plug (3P) x 12, Large type removable terminal plug (10P) x 2, Small type removable terminal plug (10P) x 1, Fader gang bar x 4, Protective cover x 1
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The digital stereo mixer shall be equipped with digital signal processing functions such as Automatic Resonance Control function (ARC), Feedback Suppressor function (FBS), Automatic stereo input mute function, Tone controller, and PEQ.
Tone control and gain adjustment shall be made through the front panel operation. Each input shall have a built-in analog gain control circuit. The digital stereo mixer shall be mounted in a 19-inch EIA component rack (4U size).
The mixer shall have the following DSP functions:
- Automatic Resonance Control (ARC) measurement and processing algorithm that optimizes speech and sound clarity for individual acoustic environments
- Feedback Suppressor (FBS) function that eliminates feedback caused by carrying the microphone
from place to place - Automatic stereo input mute (Auto Mute or Ducker) function that mutes stereo input automatically when detecting a monaural control signal
Front-mounted stereo input shall allow connection of digital audio player
Preset memory shall enable operators to store user-specified settings in response to specific needs
Optional remote control panels shall permit convenient remote operation and featuring an assign function supporting assignment of such settings as volume control, channel ON/OFF, matrix switching and preset memory recall to specified buttons. Dedicated GUI software shall facilitate higher-precision parameter setting adjustment on PC via Ethernet LAN. Connection of up to five mixers shall realize the operation with 15 input and 5 output channels.
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