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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 permits convenient hands-free operation.

SM2 with attached cable

Features:

• 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, lower fatigue during extended periods of use
• Cardioid dynamic
• Frequency response: 50 to 15,000 Hz

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