Line + Gradient Large Diaphragm Condenser Microphone
BP28L Line + Gradient Large Diaphragm Condenser Microphone - Large-diaphragm condenser element and optimized circuitry, Extremely narrow, highly directional pickup pattern, Transformer-coupled output and Housing made of lightweight, structural-grade alumi
Audio-Technica combines exceptionally low-noise large-diaphragm condenser elements with a shotgun design for extremely tight polar patterns, perfect for long-range sound recordings. With a length of 56.8 cm, the directional BP28L shotgun microphones have been specially designed to meet the needs of broadcast, film, television, recording outdoors and theater applications. Particularly suitable for long-distance sound recording in filmmaking or in theatre, the BP28L have a very low noise level (3 dB), and a transformer-coupled output results in a smooth sonic character. The microphone provide extremely high sensitivity (-23 dBV), wide dynamic range (135 dB) and high-SPL capability (138 dB). The patented acoustic port design maintains directionality across the entire frequency range.
- Large-diaphragm condenser element and optimized circuitry deliver exceptional low-noise performance – ideal for film/TV production and broadcasting applications
- Overall length of 567.9 mm with an extremely narrow, highly directional pickup pattern
- Transformer-coupled output provides smooth sonic character
- Extremely high sensitivity (-23 dBV), wide dynamic range (135 dB), and high-SPL capability (138 dB)
- Flat frequency response for accurate sound reproduction
- Rugged housing made of lightweight, structural-grade aluminum alloy
- Switchable 80 Hz high-pass filter and 10 dB pad
- Patented acoustic port design maintains directionality across the entire frequency range
Specifications
| Microphones | |
|---|---|
| Element | Fixed-charge back plate, permanently polarized condenser |
| Polar Pattern | Line directional |
| Frequency Response | 20-20,000 Hz |
| Low Frequency Roll Off | 80 Hz, 18 dB/octave |
| Open Circuit Sensitivity | -23 dB(70.8 mV) (0 dB=1 V/Pa, 1 kHz) |
| Maximum Input Sound Level | 138 dB SPL (1 kHz at 1% THD), 148 dB SPL (When pad is on.) |
| Noise | 3 dB SPL (A-weighted) |
| Dynamic Range | 135 dB (1 kHz at Max SPL) |
| Signal-to-Noise Ratio | 91 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 | 313 g |
| Dimensions | 567.9 mm long, 28.0 mm maximum body diameter |
| Output Connector | Integral 3-pin XLR-M type |
| Accessories Included | Windscreen (AT8169), holder (AT8470), stand adapter (3/8”-5/8”) |
| Audio-Technica Case Style | SG7 |