With directivity equal to mics up to 50% longer, the BP4071 has been specially created to meet the pickup demands of broadcasting, film/TV sound, professional recording, wildlife recording and theater sound reinforcement. Particularly useful for miking dynamic action in film/TV audio as well as in “spot” miking techniques in the music studio or theater, the 15.55"-long BP4071 provides a low noise floor and direct-coupled, balanced output for a clean signal even in high-output conditions. Audio-Technica has pioneered an interference tube design in the BP4071 that provides the same directivity as mics up to 50 percent longer.
Key Features
- Designed for use in broadcasting, film/TV production, and theater sound reinforcement applications
- Direct-coupled, balanced output ensures a clean signal even in high-output conditions
- Innovative acoustic design provides same directivity as mics up to 50% longer
- Rugged housing made of lightweight structural-grade aluminum alloy
- Transformerless design for improved pickup of transients
- Switchable 80 Hz high-pass filter & 10 dB pad
- RoHS-compliant – free from all substances specified in the EU directive on the reduction of hazardous substances (RoHS)
Technical Specifications
| Microphones |
| Element |
Externally polarized (DC bias) capacitor |
| Polar Pattern |
Line + gradient |
| Frequency Response |
20-20,000 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 |
136 g (4.8 oz) |
| Dimensions |
395.0 mm (15.55") long,
21.0 mm (0.83") maximum body diameter |
| Output Connector |
Integral 3-pin XLRM-type |
| Audio-Technica Case Style |
SG3 |
What's Included
- AT8405a stand clamp for 5/8"-27 threaded stands
- 5/8"-27 to 3/8"-16 threaded adapter
- AT8145 windscreen
- Two O-Rings
- Protective carrying case
