SM89 Shotgun Microphone
The SM89 is a highly directional condenser shotgun microphone with distant pickup characteristics suitable for on-location film and television production, 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.
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
Specifications
- Type
- Pressure gradient/line combination
- Transducer
- Condenser
- Frequency Response
- 60 to 20,000 Hz
- view larger
- 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 of microphone output connector
- Power
- Phantom voltage: 11 to 52 Vdc; 2 mA current drain
- Low-Cut Filter
- 60 Hz(--) or 160 Hz (/-- )
- Case
- Satin-black vinyl painted aluminum alloy handle and grille with stainless steel screen
- Dimensions
- See User Guide
- Environmental Conditions
- Operating Temperature: -29 to 57 degrees C (-20 to 135 degrees F)
- Relative Humidity (Operating): 0 to 95%
- Storage Temperature: -29 to 74 degrees C (-20 to 165 degrees F)
- Relative Humidity (Storage): Up to 80% at 74 degrees C (165 degrees F)
- Net Weight
- 195 grams (6.9 oz)