Crown CM311AESH Headworn Microphone

High quality reproduction from a lightweight, compact mic!

Designed for touring and live sound applications, this is a rugged head-worn microphone with unequalled performance. It sounds like the best handheld microphones—full, clear, and distortion-free, even with the loudest singers. The CM-311AESH is the latest version of Crown’s proprietary Differoid® technology, which comes with a connector to connect to your Shure wireless system. Its cardioid pickup pattern rejects sounds from the rear, such as floor monitors. Its noise-canceling ability rejects sounds at a distance, such as instruments on stage and crowd noise. This results in the CM-311A having outstanding gain-before-feedback and isolation. Lightweight and comfortable, the mic’s headband and boom adjust to fit any singer. An included pop filter greatly reduces breath noise and pops. Because of the boom’s unique behind-the-ear design, it does not cover up the singer’s face.

• Powered by a 9V battery in the belt pack, or by 18 to 48V phantom power
• Includes a carrying case, WS-6 foam pop filter and clothing clip, Shure wireless connector

Technical Description

Transducer type: Electret condenser

Frequency response (typical): 50 Hz to 17,000 Hz

Polar pattern: Cardioid

Impedance: 6 kilohms balanced

Recommended load impedance: 10kilohms

Open-circuit sensitivity, typical, close-talking: 1.25 mV/Pa (–58 dB re 1V/Pa)

Power sensitivity, typical, close-talking: –71.5dB re 1 mW/Pa

Equivalent noise level (self noise): 26 dB SPL typical (0 dB = 0.0002 dyne/cm2), A-weighted

S/N ratio: 68 dB at 94 dB SPL

Maximum SPL: 140 dB SPL with 3V DC, 148 dB SPL with 9V DC

Operating voltage: 3–9V DC from the transmitter’s battery

Polarity: Positive pressure on diaphragm produces positive voltage XLR pin 2 with respect to pin 3

Current drain: 6.5 mA nominal

Battery life: Approximately equal to transmitter battery life

Off-attenuation: 70 dB

Output connectors: supply your own to match your transmitter

Cables: In-line with this cable is a small circuit module that equalizes the microphone signal. Cable is 42”/ 106.68cm long from headband to module, 12”/ 30.48cm from module to cable end. 2-conductor shielded unbalanced cable, unterminated

Materials: High-impact plastic mic housing, brass boom, steel wire headband, high-impact plastic and steel battery pack

Finish: Satin black

Net weight: Head-worn mic, 2.1 oz/ 61g

Warranty Information

3-year limited warranty on all Crown amps and microphones.