Audio-Technica BP4025 Bruksanvisning
Audio-Technica
mikrofon
BP4025
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X/Y STEREO FIELD RECORDING MICROPHONE
- Designed for broadcast and professional recording, and eld
use
- Unique coincident capsule conguration 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 congurations.
The microphone is RoHS compliant–free from all substances
specied 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 PATTERN X/Y Stereo
FREQUENCY RESPONSE 20-17,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave
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
DYNAMIC RANGE (typical) 131 dB, 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO 80 dB, 1 kHz at 1 Pa
PHANTOM POWER REQUIRMENTS 11 - 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 CONNECTOR Integral 5-pin XLRM-type
CABLES 5.0m long, 8 conductor, shielded,
viny l-jac keted s tereo c able wi th
5- pin XL RF-ty pe c on nec tor at
mi cropho ne end a nd two 3- pi n
XLRM-type connectors at output
end
ACCESSORIES FURNISHED AT8405a sta nd 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
Produktspecifikationer
| Varumärke: | Audio-Technica |
| Kategori: | mikrofon |
| Modell: | BP4025 |
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