Overview
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.
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)
Specifications
| 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 |
| IMPEDANCE | 50 ohms |
| 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 (typical) | 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 |
| ACCESSORIES FURNISHED | 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 |
| AUDIO-TECHNICA CASE STYLE | SG3 |
