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Audio Technica BP40 Large-Diaphragm Dynamic Broadcast Microphone

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The BP40 broadcast vocal microphone offers a rich, natural, condenser-like sound from a large-diaphragm dynamic design. The large diaphragm features patented floating-edge construction that maximizes diaphragm surface area and optimizes overall diaphragm performance, while the humbucking voice coil prevents electromagnetic interference (EMI).

With rugged construction and stylish, waveform-inspired design, the BP40 delivers clear and articulate reproduction, ideal for any broadcast application. Optimized capsule placement helps maintain a commanding vocal presence even at a distance, while the multistage windscreen provides superior internal pop filtering. The BP40 broadcast microphone also includes a switchable 100 Hz high-pass filter to provide even more pop protection.

- Rich, natural, condenser-like sound

- Large diameter diaphragm with patented floating-edge construction for optimal diaphragm performance

- Humbucking coil prevents electromagnetic interference (EMI)

- Hypercardioid polar pattern improves isolation

- Switchable 100 Hz high-pass filter

- Superior off-axis rejection for maximum gain before feedback

- Optimized capsule placement for commanding vocal presence even at a distance

- Multistage windscreen provides superior internal pop filtering

- Rugged, all-metal construction for dependable use in professional broadcast environments



Polar Pattern


Frequency Response

50 -16,000 Hz

Open Circuit Sensitivity

–48 dB (3.9 mV) re 1V at 1 Pa


450 ohms


Flat, roll-off


632 g


164.0 mm (6.45″) long, 56.0 mm (2.20″) diameter

Output Connector

Integral 3-pin XLRM-type

Accessories Furnished

AT8483 mounting clamp for 5/8″-27 threaded stands; 5/8″-27 to 3/8″-16 threaded adapter; soft protective pouch 

OPTIONAL ACCESSORY: AT8484 shock mount for 5/8″-27 threaded stands


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