8-channel digital mixer:
Product profile
8-channel digital mixer:
The programmable network 8-channel digital conference mixer, embedded with 32-bit ultra-high speed RISC processor, high-performance real-time embedded operating system, full digital circuit development and design, integrated digital mixer and conference functions, is dedicated to small conference applications;
With PC software, you can set and view all parameters through driveless USB;
Each microphone can be set with its own name and display the relevant status of the microphone in real time;
Built-in professional DSP feedback controller can effectively prevent whistling and achieve a distance of 60 cm;
It also has a 12dB environment noise reduction function, and the feedback function can be turned on and off independently;
8 microphones can be connected. Each microphone can independently control the volume, priority, speaking time, voice control sensitivity and phantom power;
The system speech mode includes FIFO, restricted mode, priority mode, etc;
The number of speakers can be set to 1-8, which can meet various needs of the site;
Each microphone can be separately set into prohibited mode, normally open mode and normal voice control mode;
The system can be upgraded on site through drive-free USB to realize parameter fine tuning;
The automatic closing time of each microphone can be set independently, and the maximum time can be set to 999 seconds to meet the needs of various applications;
The microphone status change has the code sending function, which can be opened or closed freely by the software, and the code sending interface can be customized;
Support the central control function, and set all system parameters through the bidirectional central control serial port;
The system has a perfect self-inspection function, which can judge general faults on site;
The unique NOMA (Number of Open Microphone Attenuated) function can adjust the input gain and the total output gain, especially the output level can be automatically adjusted according to the increase or decrease of the channel used, which can effectively prevent whistling;
4 sets of RCA interface inputs, with two independent adjustable volume;
4 sets of RCA interface outputs, with two independent adjustable volume;
8 balanced input ports, which can connect microphone or line level signal;
High signal-to-noise ratio, excellent restored sound quality;
The system has a 2.23-inch dot-matrix display screen, which can set all system parameters;
Technical parameters:
Input power voltage: 220V (+- 10%)
Power:<50W
Single-channel microphone phantom power supply (output): 48V (+- 1V)
Signal-to-noise ratio:>75dB
Distortion:<0.5%
Channel resolution:>95dB
Single microphone frequency response: 70Hz -- 18kHz
Single-channel microphone input impedance: 1K Ω
Voice control sensitivity: - 47dB -- 0dB (48 level adjustable, 0 is off, attenuation>95dB)
Single-channel microphone volume adjustment: - 47dB -- 0dB (48 level adjustable, 0 is off, attenuation>95dB)
Total volume output: - 47dB -- 0dB (48 levels adjustable, 0 is off, attenuation>95dB)
Total volume input: - 47dB -- 0dB (48 levels adjustable, 0 is off, attenuation>95dB)
Balance output impedance: 1K Ω
Unbalanced output impedance: 1K Ω
Unbalanced input impedance: 3.9K Ω
Recording output impedance of each microphone: 1K Ω
Central control interface: support, RS232-C
USB control: support (drive free)
Trigger voltage of circuit microphone:<100mV
Opening time of single microphone:<350uS
Delay time of single microphone: 1-999S
Size: 42cm (W) × 4cm(H) × 21.5cm(D)
Net weight: 3Kg
- R&H Post date：2023-03-06 rh-acoustics
Technical parameter
8路数字混音器：
可编程网络8路数字会议混音器，内嵌32位超高高速RISC处理器，高性能实时嵌入式操作系统，全数字电路开发设计，集成数字混音器和会议功能，专属于小型会议应用；
带电脑PC软件，可通过免驱USB设置和查看所有参数；
每路话筒可独立设置人名，并可实时显示话筒相关状态；
内置专业DSP反馈拟制器，可有效防止啸叫，实现60公分远距离拾音距离；
并有12dB环境降噪功能，反馈功能可独立打开和关闭；
可连接8支话筒，每支话筒都可独立控制音量大小，优先级别，发言时间，声控灵敏度和幻像电源；
系统发言模式包括先进先出，限制模式，优先模式等；
发言人数可设置成1-8个，可满足现场多种需要；
每路话筒可单独设置成禁止模式，常开模式和普通声控模式；
系统可通过免驱USB实现现场升级，实现参数微调；
每路话筒自动关闭时间可独立设置，最长可设置为999秒，满足多种应用需要；
话筒状态改变带有发码功能，可软件自由开启或关闭，发码接口可定制；
支持中控功能，可通过双向中控串口设置系统所有参数；
系统带有完善的自检功能，可现场判断一般故障；
独特的NOMA(Number of Open Microphone Attenuated)功能，能调节各输入增益和输出总增益，特别是能根据使用声道的增减，自动调整输出电平，能有效的防止啸叫；
4组RCA接口输入，两两音量独立可调；
4组RCA接口输出，两两音量独立可调；
8个平衡式输入端口，可连接话筒或者线路电平信号；
信躁比高，还原音质极佳；
系统具有2.23寸点阵显示屏，可设置系统所有参数；
技术参数：
输入电源电压：220V(+-10%)
功率：<50W
单路话筒幻象电源(输出)：48V(+-1V)
信噪比：>75dB
失真度：<0.5%
通道分离度：>95dB
单路话筒频响：70Hz---18kHz
单路话筒输入阻抗：1K欧姆
声控灵敏度：-47dB---0dB(48级可调,0为关闭，衰减>95dB)
单路话筒音量调节：-47dB---0dB(48级可调,0为关闭，衰减>95dB)
音量总输出：-47dB---0dB(48级可调,0为关闭，衰减>95dB)
音量总输入：-47dB---0dB(48级可调,0为关闭，衰减>95dB)
平衡输岀阻抗：1K欧姆
不平衡输出阻抗：1K欧姆
不平衡输入阻抗：3.9K欧姆
每路话筒录音输出阻抗：1K欧姆
中控接口：支持，RS232-C
USB控制：支持(免驱)
电路话筒触发电压：<100mV
单路话筒打开时间：<350uS
单路话筒延时时间：1-999S
尺寸：42cm(W)×4cm(H)×21.5cm(D)
净重：3Kg
