Manufacturers description
SM2 Headworn Microphone
The SM2 is a comfortable, self-adjusting headset with dual-enclosed ear receivers and an attached broadcast-quality boom-mounted microphone. Designed for news and sports broadcasting, special events remote announcing, interviewing, and intercom systems the SM2 allows convenient hands-free operation.
Features
The SM2 microphone is a close-talking unidirectional dynamic with a response from 50 to 15,000 Hz. Because of its noise reducing character, it discriminates in favor of close sounds and against distant sounds. As a result, it can be used even under extremely noisy conditions without loss or masking of the voice signal. The microphone boom pivots through 155 degrees so that the microphone can be correctly positioned at the corner of the mouth either from the left or right side. A locking thumbscrew prevents the microphone from slipping or twisting out of place.
- Close-talk microphone operation and unidirectional polar pattern for effective noise reduction
- Smooth, natural microphone voice frequency response
- Microphone can be worn on right or left side, boom pivots through 155 degrees
- Microphone boom length adjusts through 89 mm (31/2 in) range
- High sensitivity enclosed ear receivers block out room noise, enhance clarity of reception
- Self-adjusting, free-swiveling cushioned earpieces promote user comfort and lower fatigue during extended periods of use
- Cardioid dynamic
Specifications
- MICROPHONE
-
- Type
- Dynamic, Close-Talking
- Frequency Response (at 8mm [5/16 in.]
- 50 to 15,000 Hz
view larger- Polar Pattern
- Cardioid (unidirectional) response-uniform with frequency, symmetrical about axis
- Impedance
- Microphone rating impedance is 150 ohms (200 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms
- Microphone Sensitivity (close-talked at 1,000 Hz)
- Open Circuit Voltage: 47.0 dBV/Pa*(4.5 mV)
- *1Pa = 94 dB SPL
- Hum Sensitivity (typical)
- 38.4 dB equivalent SPL in 1 m0e field
- Polarity
- Positive pressure on diaphragm produces positive voltage on RED cable lead with respect to BLACK cable lead
- RECEIVERS
-
- Type
- Dynamic
- Frequency Response
- 100 to 8,000 Hz
- Output Level (at each ear)
- 104.0 dB SPL with 1.4V at 1 kHz (1.0 mW into 6 cc cavity)
- Polarity
- Positive voltage on WHITE and/or YELLOW cable leads produces positive pressure at receiver
Description
SHURE MICROPHONES - SM Series
Legendary SM microphones have 'come to define the sound of live performance'. Recognisable by name and reputation, SM microphones 'are virtually indestructible professional gear, built to take the punishment of night-after-night touring. Durable and reliable, SM microphones deliver consistent vocal and instrument reproduction in any performance setting.'