Shure SM2

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.

The microphone in the SM2 is a close-talking unidirectional dynamic type with a response fiom 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.

Features:

• Close-talk microphone operation and unidirectionalpolar pattern for effective noise reduction
• Smooth, natural microphone voice frequency response
• Microphone can be worn on right or left side, boompivots through 155°
• Microphone boom length adjusts through 89 mm (31/2in.) range
• High sensitivity enclosed ear receivers block outroom noise, enhance clarity of reception
• Self-adjusting, free-swiveling cushioned earpiecespromote user comfort, lower fatigue during extended periods of use
• The Shure guarantee of rugged construction and durability

Microphone Specifications:

• Type: Dynamic, Close-Talking
• Frequency Response: 50-15,000 Hz
• Polar Pattern: Cardioid (unidirectioinal)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)
• Hum Sensitivity (typical): 38.4 dB equivalent SPL
• Polarity: Positive pressure on diaphragm produces positive voltage on REDcable lead with respect to BLACK cable lead

Headphone Specifications:

• Type: Dynamic
• Frequency Response: 100 to 8,000 Hz
• Impedance: 2,000 ohms at 1 kHz
• Output Level (at each ear): 104.0 dB SPL with 1.4V at1 kHz (1.0 mW into 6 cc cavity)
• Polarity: Positive voltage on WHITE and/or YELLOW cable leads producespositive pressure at receiver

General Specifications:

• Cable: 2 m (6.5 ft) detachable, five conductor (twoconductors shielded), with 6-pin threaded connector to mate with connector onheadset
• Construction Material: Soft durable covered steelheadband, chrome-plated steel receiver brackets, soft durable covered paddedearpieces, black thermoplastic microphone housing, stainless steel grille andboom
• Net Weight: 290 grams (10.2 oz)