Operating Voltage
DC24V (supplied by main unit)
Product Overview
The Harmonai D8D Voting Wired Daisy-Chain Conference System Chair/Delegate Unit is a high-quality conference microphone engineered for formal meeting environments. It features a cardioid electret condenser pickup element with full-bandwidth frequency response from 20Hz to 20kHz, signal-to-noise ratio exceeding 80dB, and total harmonic distortion below 0.05%, ensuring clear, transparent, and high-fidelity voice reproduction. Built-in voting functionality supports meeting ballot voting, and the daisy-chain cascading architecture simplifies cabling and installation—making it an ideal choice for government agencies, enterprises, academic institutions, and other formal meeting venues.
Input/Output Interfaces
8P-DIN cable and Category 6A Ethernet cable
Microphone Type
Cardioid electret condenser
Sensitivity
-46dBV/Pa
Frequency Response
20Hz–20kHz
Input Impedance
2kΩ
Directivity (0°/180°)
>20dB (at 1kHz)
Equivalent Noise Level
20dBA (SPL)
Maximum Sound Pressure Level
125dB (THD<3%)
Signal-to-Noise Ratio
>80dB
Channel Crosstalk
>80dB
Total Harmonic Distortion
<0.05%
Typical Applications
The D8D Voting Wired Daisy-Chain Conference Unit is suitable for diverse formal meeting scenarios: official voting settings such as People’s Congresses and CPPCC conferences in government agencies; voting segments in corporate board meetings and shareholder meetings; speech and voting requirements in academic seminars and review panels; and large-scale congresses or general assembly meetings requiring structured speaking order and voting capability. The daisy-chain connection method significantly reduces cabling effort, while DC24V low-voltage power supply ensures safe operation.
For more product details or customized conference system solutions, contact the Harmonai professional team—we offer one-on-one technical support and solution consultation.
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