Shure SM89

Shure Wired Microphone SM89 Shure Wired Microphone SM89 Description: The Model SM89 is a highly directional condenser shotgun microphone with distant pickup characteristics suitable for on-location film and television production. The SM89 can also be used for theater sound reinforcement, spot news coverage, or wildlife recording. The SM89 discriminates at a distance in favor of desired dialogue or effects and against ambient noise -- even in noisy surroundings. The on-axis frequency response of the SM89 is very smooth and extended. For clarity and speech intelligibility, a slight presence rise optimizes the high-frequency response to compensate for high-frequency losses. A low-frequency roll-off minimizes pickup of wind, mechanical vibration, ambient noise, and rumble without affecting voice frequencies. The off-axis response of the SM89 is virtually free of comb-filter effects. This is important when it is not possible to aim the microphone precisely or when it is desirable to pick up dialogue or sound from moving sources. SM89 - Includes carrying case and foam windscreen. Phantom power required Highly directional shotgun mic with superior off-axis rejection to eliminate undesired sound sources over long distances. Condenser. Shure Wired Microphone SM89 Features: Designed especially for location film and TV production, theater sound reinforcement, and spot news coverage Highly directional polar pattern optimized for distant pickup Smooth, wide on-axis response Greatly suppressed side pickup with minimum comb-filter effects Two low-cut frequencies, switch selectable Low impedance, high sensitivity Extremely low hum, noise, and RF pickup Uses readily available 11 to 52 Vdc phantom supply Rugged and reliable, operates over wide range of temperature and humidity Extremely lightweight, can be suspended on fishpole for long periods of time without operator fatigue Aircraft-grade materials used throughout Supplied with foam windscreen and strong luggage-grade carrying case Shure Wired Microphone SM89 Specification: Type:Pressure gradient/line combination Transducer Condenser Frequency Response :60 to 20, 000 Hz Polar Pattern Hypercardioid at low frequencies, lobar at frequencies above 1 kHz, symmetrical about axis Output Impedance Rated at 150 ohms (100 ohms actual) Recommended minimum load: 800 ohms (May be used with loads low as 150 ohms with reduced clipping level) Sensitivity: (at 1, 000 Hz) Open Circuit Voltage: -33 dBV/Pa (22.2 mV) 1 Pascal = 94 dB SPL Output Clipping Level (at 1, 000 Hz, under 0.5% THD) 800 ohm load: -1 dBV (0.89 V) 150 ohm load: -12 dBV (0.25 V) Maximum SPL (at 1, 000 Hz, under 0.5% THD) 800 ohm load: 127 dB SPL 150 ohm load: 119 dB SPL Hum Pickup Under 3 dB equivalent SPL in 1 mOe field (60 Hz) Output Noise 16 dB SPL typical, A-weighted Signal-to-Noise Ratio 79 dB re 94 dB SPL Dynamic Range 111 dB Phasing Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3