Audio-Technica BP4071 15in Line Gradient Condenser Broadcast Production Microphone

Audio-Technica BP4071 15in Line Gradient Condenser Broadcast Production Microphone

The Audio-Technica BP4071 is a precision-engineered, long-line gradient condenser microphone designed to meet the rigorous demands of broadcasting, film/TV sound, professional recording, wildlife recording, and theater sound reinforcement. With its impressive directivity, the BP4071 matches the performance of mics up to 50% longer, providing you with exceptional sound pickup capabilities even in the most challenging environments. Whether you are capturing dynamic action in TV and film or employing spot miking techniques in a studio or theater, the 15.55-inch BP4071 ensures a low noise floor and a direct-coupled, balanced output for a clean, pristine signal even in high-output conditions.

This microphone features Audio-Technica’s innovative acoustic design, which incorporates an interference tube that maintains the same directivity as significantly longer mics. Ruggedly housed in lightweight structural-grade aluminum alloy, it offers durability and portability. Essential for high-fidelity audio capture, the BP4071's transformerless design enhances transient pickup, while a switchable 80 Hz high-pass filter and 10 dB pad add to its versatility and precision. Meeting the EU RoHS directive, this mic is free from all hazardous substances, making it an environmentally sound choice for your professional audio needs.

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 and 10 dB pad
• RoHS-compliant, free from all substances specified in the EU directive on the reduction of hazardous substances

Specifications

• Element: Externally polarized (DC bias) capacitor
• Polar Pattern: Line + gradient
• Frequency Response: 20-20,000 Hz
• Low Frequency Roll-Off: 80 Hz, 12 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: 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 inches) long, 21.0 mm (0.83 inches) maximum body diameter
• Output Connector: Integral 3-pin XLRM-type

Package Contents

• 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