Crown CM311AE Headset Microphone (Unterminated for Wireless)
This version of the best-selling CM-311A headset is wired in 4-pin TA-4F configuration for Shure wireless systems. The CM-311A offers Differoid performance in a comfortable headworn package. The CM-311A is designed to meet the most demanding touring sound applications, with its electret condenser capsule providing full, clear and distortion-free sound. Gain-before-feedback and isolation are exceptional. Lightweight, rugged and comfortable, the headband and mic boom are adjustable to any vocalist. Includes battery/phantom powered belt pack. Best gain-before-feedback and isolation of any headworn microphone! Condenser capsule provides full, clear, distortion-free sound. Specifications: - Transducer type: Electret condenser.
- Frequency response (typical): 50 Hz to 17,000 Hz.
- Polar pattern: Cardioid.
- Impedance: 6 kilohms unbalanced.
- Recommended load impedance: 10 kilohms.
- Open-circuit sensitivity, typical, close-talking: 1.25 mV/Pa (–58 dB re 1V/Pa).
- Power sensitivity, typical, close-talking: –71.5 dB re 1 mW/Pa.
- Equivalent noise level (self noise): 26 dB SPL typical (0 dB = 0.0002 dyne/cm2), A-weighted.
- S/N rati 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 on with respect to white lead.
- Current drain: 0.27 mA nominal.
- Battery life: approximately equal to transmitter battery life.
- Off-attenuation: 70 dB.
- Output connectors: match your transmitter.
- Cables: In-line with this cable is a small circuit module that equalizes the microphone signal. Cable is 42-inches (106.68 cm) long from headband to module, 12-inches (30.48 cm) 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 (61 g).
| Model |
CM311AE Headset Microphone |
| Series |
CM Series |
| Capsule/Element |
Electret condenser |
| Polar Pattern |
Cardioid |
| Signal to Noise Ratio |
68 dB |
| Power Supply |
Comes from the transmitter’s battery |
| Output Impedance |
6 kilohms unbalanced |
| Power Requirements |
3–9V DC |
| Frequency Response |
50 Hz to 17,000 Hz |
| Shockmount Included |
No |
Crown CM311AE Headset Microphone (Unterminated for Wireless)
The manufacturer's warranty covers parts for three years and labor for three years from date of purchase. The warranty excludes damage from misuse, abuse, and contains other exclusions.
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