audio-technica BP4025

LARGE DIAPHRAGM X/Y MICROPHONE

Large-diaphragm capsules offer pristine sound quality
Innovative coincident capsule configuration produces accurate stereo image
Compact, lightweight design is ideal for camera-mount use
Excellent channel separation
Switchable low-frequency roll-off and 10 dB pad
Operates with phantom power only

BP4025

BP4025

UNIQUE CONFIGURATION OF A LARGE COINCIDENT DIAPHRAGM CAPSULE

Unlike most X/Y stereo microphones where the capsules form a 90° stereo image, the BP4025 has ingenious arrangement of its large capsules for stereo more "realistic" 120° image. The two capsules are mounted back-to-back on the same electronic circuit.

This is a unique configuration of coincident large diaphragm capsules for impeccable sound quality and exceptionally low noise level. The audio reproduction - thanks to the excellent channel separation - is natural and powerful to give the listener the impression of being there when the audio was recorded.

  • Unique configuration of large-diaphragm capsules offer pristine sound quality and exceptionally low noise
  • Natural and powerful sound reproduction
  • Innovative coincident capsule configuration produces accurate stereo image in smaller housing
  • Compact, lightweight design is ideal for camera-mount use, but can also be used in the studio
  • Excellent channel separation
  • Phantom power operation—for use with professional equipment
  • Diaphragms are 24.3mm diameter and a thickness of 2 microns
  • 155 dB SPL, with 10 dB pad (nominal)
  • Switchable low-frequency roll-off and 10 dB pad
  • 80Hz Low cut filter with a slope of 12dB/octave
  • Low self noise (14dB)
  • Includes one balanced cable (5-pin XLRM at the microphone end and two 3-pin XLRM-type connectors at output end)
 

“UNIQUE CONFIGURATION”

The BP4025 is equipped with large membrane coincident capsules. Mounted in parallel to the microphone head, the shared electronic circuit guarantees that the recordings of the two membranes are processed at exactly the same time from the same source, for the perfect stereo image.

“NATURAL SOUNDING”

Thanks to the excellent channel separation on the BP4025, the audio reproduction is natural and powerful to give the listener the impression of being there when the audio was recorded.

“RUGGED FULLY METAL CONSTRUCTION”

Robust all metal construction, ideal for use in professional broadcast environments.

 
 
BP4025

LOW SELF NOISE

The BP4025's large diaphragms allow it to have very low self noise of just 14 dB. They also accept strong sound pressure levels (up to 155 dB).

BP4025

LARGE DIAPHRAGMS

The BP4025 has two membranes of Ø24.3mm in polyphenylene sulfide (PPS), a thermoplastic material known for its thermal and directional stability.

BP4025

WIND PROTECTION

The 80Hz low-cut filter significantly reduces handling noise and wind noise, during external use. If necessary, the BP4025 also has a high-quality windshield.

BP4025

X/Y STEREO

The BP4025 capsules are positioned in an X/Y, back to back configuration, with a perfect angle of 120°. This gives the construction an "ice cream cone" like appearance.

BP4025
Element Fixed-charge back plate permanently polarized condenser
Polar Pattern X/Y Stereo
Frequency Response 20 - 17,000 Hz
Open Circuit Sensitivity -32 dB (25.1 mV) re 1V at 1 Pa
Impedance 170 ohms
Maximum Input Sound Level 145 dB SPL, 1 kHz at 1% T.H.D.; 155 dB SPL, with 10 dB pad (nominal)
Channel Balance < 2.5 dB
Low Frequency Roll Off 80 Hz, 12 dB/octave
Switches Flat, roll-off; 10 dB pad (nominal)
Dynamic Range 131 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio 80 dB, 1 kHz at 1 Pa
Phantom Power Requirements 11-52V DC, 7 mA typical (both channels total)
Weight 269 g (9.5 oz)
Dimensions 186.0 mm (7.32") long, 47.6 mm (1.87") head diameter 21.0 mm (0.83") body diameter
Output Connector Integral 5-pin XLRM-type
Cable 5.0 m (16.5') long, 8 conductor, shielded, vinyl-jacketed stereo cable with 5-pin XLRF-type connector at microphone end and two 3-pin XLRM-type connectors at output end
Accessories Included AT8405a stand clamp for 5/8"-27 threaded stands; windscreen; soft protective pouch

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