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S921D Conference System Unit

S921D Conference System Unit

    20.2mm gold-plated capsule

     Hypercardioid

• Gold-plated diaphragm capsule: 180° rejection ratio reaches more than 17dB, 135° rejection ratio reaches more than 20dB;

• The hypercardioid capsule with unique sound cavity forms a super polar pattern, which can effectively prevent whistling;

• The pickup distance is far, and the effective pickup distance can reach more than 1 meter.

• Circuit design to suppress common mode interference, use of high-precision electrical components to reduce thermal noise.

• Double connecting rod design can realize microphone 0°-90° elevation angle pickup.

• Zinc alloy one-piece molding shell, effectively inhibit all kinds of electromagnetic interference.


  • Detail
  • Overview
  • Specifications

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The S911D is a conference system unit (Chairman unit) that can be directly connected to the conference system main controller for use. It is equipped with a high-sensitivity, quality gold-plated condenser capsule with a diameter of 20.2mm. The conference units are connected using a daisy chain technique and have the ability to prioritize control, as well as terminate/pause all delegate units working. There is no limit to the number of chairman units that can be connected in the system. When the chairman unit is on, the system can be set to emit a prompt tone to alert attendees. It comes with a soft-touch mute button that effectively avoids mechanical button noise. The integrated metal housing and exquisite woven mesh form a unique sound cavity that can clearly pick up sound without distortion. The microphone has a sophisticated and generous appearance, is sturdy and durable, and is suitable for a variety of conference venues.

Capsule: 20.2mm gold-plated capsule

Polar Pattern: Hypercardioid

Frequency Response: 20-20,000Hz

Sensitivity: -30dB,31.6mV/Pa(0dB=1V/Pa@1kHz)

Output Impedance: 150Ω

Maximum SPL: 135dB SPL (1% T.H.D.@1kHz, 0dB SPL=2x10⁻⁵Pa)

Equivalent noise: 17dB-A

Weight: 1050g

Dimensions: 221X105X130 (mm)

Power: Conference system main controller


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