Audio-Technica BP28L Large-Diaphragm Line Gradient Microphone - 22-inch
The Audio-Technica BP28L combines a large-diaphragm condenser element with a 28 mm diameter shotgun body for exceptional low-noise performance.
With an extremely tight pickup pattern and a patented acoustic port design that maintains directionality across the entire frequency range, this 22.4" shotgun microphone is specially tailored to meet the needs of broadcast, film, television, outdoors recording and theater applications. Particularly suitable for long-distance miking for film or theater, the BP28L has an exceptionally low noise floor (3 dB) and transformer-coupled outputs that produce a smooth sonic character. The microphone also provides extremely high sensitivity (-23 dBV), wide dynamic range (135 dB), and high-SPL capability (138 dB), and is equipped with a switchable 80 Hz high-pass filter and 10 dB pad.
Features:
- Designed for use in broadcasting, film/TV production, and theater sound reinforcement applications
- Overall length of 22.4" with an extremely narrow, highly directional pickup pattern
- The custom 28 mm diameter shotgun body houses a large-diaphragm condenser element for exceptional low-noise performance
- 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:
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Line + gradient
- 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)
- Impedance: 250 ohms
- 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 (11 oz)
- Dimensions: 567.9 mm (22.4") long, 28.0 mm (1.1") maximum body diameter
- Output Connector: Integral 3-pin XLR-M type
- Audio-Technica Case Style: SG7
- Element: Fixed-charge back plate, permanently polarized condenser
- Polar Pattern: Line + gradient
- 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)
- Impedance: 250 ohms
- 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 (11 oz)
- Dimensions: 567.9 mm (22.4") long, 28.0 mm (1.1") maximum body diameter
- Output Connector: Integral 3-pin XLR-M type
- Audio-Technica Case Style: SG7
