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SM2 Headworn Microphone |
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Product Code:
SM2
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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. |
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| 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 (3 1/2" 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
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| Specifications |
MICROPHONE
- Type : Dynamic,
Close-Talking
- Frequency Response (at 8mm [5/16
in.] : 50 to 15,000 Hz
- 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
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