
The Audio-Technica BP28 is a professional 14" shotgun microphone that integrates a large-diaphragm condenser element within a 28 mm diameter body. This line and gradient microphone delivers exceptional low-noise performance specifically for demanding audio environments.
The Audio-Technica BP28 features an exceptionally low noise floor of 8 dB, ensuring clean signal capture even in quiet settings. Transformer-coupled outputs provide a smooth sonic character for natural sound reproduction. With a high sensitivity of -28 dBV and a wide dynamic range of 135 dB, this microphone captures subtle nuances and loud signals with equal precision. The unit handles high sound pressure levels up to 143 dB, allowing for distortion-free recording of intense acoustic sources.
A patented acoustic port design allows the Audio-Technica BP28 to maintain consistent directionality across the entire frequency range. The highly directional pickup pattern excels at isolating specific sound sources, which is critical for long-distance miking in complex environments. A flat frequency response ensures accurate sound reproduction for professional-grade results.
The microphone includes integrated tools for signal management, such as a switchable 80 Hz high-pass filter to reduce unwanted low-frequency noise and a 10 dB pad for high-intensity audio. The rugged housing consists of lightweight, structural-grade aluminum alloy to ensure durability during field use without adding excessive weight to boom poles or camera rigs.
The Audio-Technica BP28 meets the rigorous requirements of several professional audio fields:
| Element | Fixed-charge back plate, permanently polarized condenser |
| Polar Pattern | Line + gradient |
| Frequency Response | 20-19,000 Hz |
| Low Frequency Roll Off | 80 Hz, 18 dB/octave |
| Open Circuit Sensitivity | -28 dB (39.8 mV) (0 dB=1 V/Pa, 1 kHz) |
| Impedance | 250 ohms |
| Maximum Input Sound Level | 143 dB SPL (1 kHz at 1% THD), 153 dB SPL (when pad is on) |
| Noise | 8 dB SPL (A-weighted) |
| Dynamic Range | 135 dB (1 kHz at Max SPL) |
| Signal-to-Noise Ratio | 86 dB (1 kHz at 1 Pa, A-weighted) |
| Phantom Power Requirements | 11 - 52 V DC, 3.4 mA |
| Switches | Low cut: on/off, Pad: on/off |
| Weight | 223 g (7.9 oz) |
| Dimensions | 354.9 mm (14.0") long, 28.0 mm (1.1") maximum body diameter |
| Output Connector | Integral 3-pin XLR-M type |
| Accessories Included | AT8170 windscreen, AT8470 stand clamp for 5/8"-27 threaded stands, 5/8"-27 to 3/8"-16 threaded adapter |
| Audio-Technica Case Style | SG6 |
| Length | 28.43 In. |
|---|---|
| Width | 3.39 In. |
| Height | 3.39 In. |
| Weight | 2.86 lbs |
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