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.