Premium Headworn Microphone with Differoid Noise Cancelling Technology

The CROWN CM-311 offers the best of both worlds: Differoid®performance in a comfortable headworn microphone. Designed for touring and live-sound applications it sounds like the best handheld microphones-full, clear, and distortion-free, even with the loudest singers.

Differoid®stands for differential cardioid it is a noisecancelling mic, which cancels sounds beyond a few inches away – such as floor monitors, instruments on stage, and crowd noise. Controlled field tests showed that the Differoid®provides up to 12 dB more gain before feedback than conventional cardioid microphones. This results in the CROWN CM-311 having outstanding gain-before-feedback and isolation. Many users of the Differoid®say that their house mix is better because the mic’s isolation is nearly complete.

Lightweight and comfortable, the mic’s headband and boom adjust to fit any singer.

Polar pattern: Cardioid

Frequency range: 50 to 17,000 Hz

Sensitivity: CM-311A: 4 mV/Pa (-48 dBV)

Max. SPL: 148 dB

Equivalent noise level: 26 dB-A

Signal/noise ratio: (A-weighted) 68 dB (A-weighted)

Impedance: 75 ohms balanced

Power requirement: 18 to 48 V phantom power to DIN/IEC

Connector CM-311A: 3-pin XLR

Cable: 106 cm (42 in.)

Finish: satin black

Net weight: 61g (2.1 oz.)