Audio-Technica BP4025 Handleiding

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X/Y STEREO FIELD RECORDING MICROPHONE

- Designed for broadcast and professional recording, and eld

use

- Unique coincident capsule conguration produces accurate

stereo image in smaller housing

- Large-diaphragm capsules for pristine sound quality and

exceptionally low noise

- Compact, lightweight design is ideal for camera-mount use

- Excellent channel separation

- Integral 80 Hz HPF switch and 10 dB pad

The BP4025 is intended for use in professional applications

where remote power is available. It requires 11V to 52V DC

phantom power, which may be provided by an audio mixer, or by

a separate, in-line source such as the Audio-Technica AT8801

single-channel or AT8506 four-channel phantom power supplies.

Output for each stereo channel is low impedance (Lo-Z)

balanced. The balanced signals appear across Pins 2 and 3

for the left channel, Pins 4 and 5 for the right channel. Pin 1 is

ground (shield) for both channels. Output is “Pins 2 and 4 hot”

- positive acoustic pressure produces positive voltage at Pins 2

and 4.

Locating the BP4025 nearer the sound source enhances the

width of the stereo image, while decreasing room ambience.

Conversely, as the mic position moves away from the sound

source, a narrower left/right stereo image results and more of the

“room sound” is noted.

An integral 80 Hz high-pass lter provides easy switching from a

at frequency response to a low-end roll-off. The roll-off position

reduces the pickup of low-frequency ambient noise (such as

traffic, air-handling systems, etc.), room reverberation and

mechanically coupled vibrations.

The BP4025 is also equipped with a switchable 10 dB pad that

lowers the microphone's sensitivity, thus providing higher SPL

capability for exible use for a wide range of speakers/performers

and system congurations.

The microphone is RoHS compliant–free from all substances

specied in the EU directive on hazardous substances.

Avoid leaving the microphone in the open sun or in areas where

temperatures exceed 43°C for extended periods. Extremely high

humidity should also be avoided.

FORM No. ATGC-L0140-08-E

10 dB

20k10k5k2k1k50020010050

Frequency Response

Frequency in Hertz

LEGEND 12” or more on axis

Response in dB

Machida • Tokyo • Japan

SPECIFICATIONS

ELEMENT Fixed-charge back plate

permanently polarized condenser

CHANNEL BALANCE<2.5 dB

POLAR PATTERNX/Y Stereo

FREQUENCY RESPONSE20-17,000 Hz

LOW FREQUENCY ROLL-OFF80 Hz, 12 dB/octave

OPEN CIRCUIT SENSITIVITY-32 dB (25.1 mV) re 1V at 1 Pa

IMPEDANCE 170 ohms

MAXIMUM INPUT SOUND LEVEL145 dB SPL, 1 kHz at 1% T.H.D.;

155 dB SPL, with 10 dB pad

DYNAMIC RANGE (typical)131 dB, 1 kHz at Max SPL

SIGNAL-TO-NOISE RATIO80 dB, 1 kHz at 1 Pa

PHANTOM POWER REQUIRMENTS11 - 52V DC, 7 mA (both channels)

SWITCHES Flat, roll-off; 10 dB pad (norminal)

WEIGHT (less cable and accessories)269 g

DIMENSIONS 186.0 mm long,

47.6 mm head diameter,

21.0 mm maximum body diameter

OUTPUT CONNECTORIntegral 5-pin XLRM-type

CABLES 5.0m 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 FURNISHEDAT8405a stand clamp for ⅝"-27

threaded stands; windscreen; soft

protective pouch

Roll-off

200 Hz

0°

330°

300°

270°

240°

210°

180°

150°

120°

90°

60°

30°

200 Hz

Polar Pattern

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

LEFT RIGHT

1 kHz

0°

330°

300°

270°

240°

210°

180°

150°

120°

90°

60°

30°

1 kHz

Polar Pattern

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

LEFT RIGHT

8 kHz

0°

330°

300°

270°

240°

210°

180°

150°

120°

90°

60°

30°

8 kHz

Polar Pattern

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

LEFT RIGHT

Product specificaties