
The Audio-Technica BP4071L is a 21.22-inch shotgun microphone designed to meet the rigorous demands of broadcast, film, and theater professionals. This line + gradient microphone provides a specialized solution for capturing high-quality audio from a distance while maintaining exceptional signal clarity.
The BP4071L features an interference tube design that creates an extremely narrow, highly directional pickup pattern. This architecture ensures excellent rejection of sound from the sides and rear of the microphone, allowing for precise isolation of the primary sound source. The microphone delivers crisp and intelligible audio reproduction, making it suitable for complex production environments.
Equipped with a transformerless design, the Audio-Technica BP4071L improves the pickup of transients to ensure accurate sound reproduction. The direct-coupled, balanced output maintains signal integrity even during high-output conditions, preventing distortion and providing a clean feed to recording equipment.
To adapt to various acoustic environments, the microphone includes integrated control features:
The housing of the BP4071L consists of lightweight structural-grade aluminum alloy, providing a rugged exterior that withstands the demands of field use without adding excessive weight to boom poles or mounts. Additionally, this microphone is RoHS-compliant, ensuring it is free from hazardous substances specified by EU directives.
The specialized length and pickup characteristics of the BP4071L make it an ideal tool for several professional fields:
The Audio-Technica BP4071L comes equipped with a comprehensive accessory kit to facilitate immediate use. The package includes a stand clamp for secure mounting, a windscreen to minimize wind noise during outdoor recording, and a protective case for safe storage and transport.
| Element | Externally polarized (DC bias) capacitor |
| Polar Pattern | Line + gradient |
| Frequency Response | 20-18,000 Hz |
| Low Frequency Roll Off | 80 Hz, 18 dB/octave |
| Open Circuit Sensitivity | -29 dB (35.5 mV) re 1V at 1 Pa |
| Maximum Input Sound Level | 141 dB SPL, 1 kHz at 1% T.H.D.; 151 dB SPL, with 10 dB pad (nominal) |
| Noise | 13 dB SPL |
| Dynamic Range | 128 dB, 1 kHz at Max SPL |
| Signal-to-Noise Ratio | 81 dB, 1 kHz at 1 Pa |
| Phantom Power Requirements | 48V DC, 4.8 mA typical |
| Switches | Flat, roll-off; 10 dB pad (nominal) |
| Weight | 175 g (6.2 oz) |
| Dimensions | 539.0 mm (21.22") long, 21.0 mm (0.83") maximum body diameter |
| Output Connector | Integral 3-pin XLRM-type |
| Accessories Included | AT8405a stand clamp for 5/8"-27 threaded stands; 5/8"-27 to 3/8"-16 threaded adapter; AT8147 windscreen; two O-Rings; protective carrying case |
| Audio-Technica Case Style | SG5 |
| Length | 19.5 In. |
|---|---|
| Width | 4.5 In. |
| Height | 2.25 In. |
| Weight | 1.9 lbs |
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