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BP4029
1 kHz
LEGEND
LR Stereo-Narrow (LR-N)
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
LEFT
1 kHz
RIGHT
1 kHz
LEGEND
Side
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
1 kHz
LEGEND
LR Stereo-Narrow (LR-N)
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
LEFT
1 kHz
RIGHT
LEGEND
Roll-off
12" or more on axis (flat)
Frequency in Hertz
Response in dB
10 dB
20k
10k
5k
2k
1k
500
200100
50
Frequency Response
1 kHz
LEGEND
Mid
Polar Pattern
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
STEREO SHOTGUN MICROPHONE
• Designed for broadcasters, videographers and sound recordists
• Compact, lightweight design is perfect for camera-mount use
• Independent line-cardioid and figure-of-eight condenser elements
• Switchable low-frequency roll-off
• Switch selection of non-matrixed M-S mode and two internally-matrixed
left/right stereo modes
MID-SIDE OPERATION: In M-S mode, the BP4029 provides independent
Mid and Side signals. This allows the width of the stereo image to be adjusted
in post production or in the field with a matrix mixer.
MATRIXED STEREO: The BP4029 offers two internally-matrixed modes
which provide traditional “left-right” stereo without the need for external mixers.
To accommodate varying acoustic environments, the user may select
between a “wide” pattern (LR-W) with increased ambient pickup, and a “narrow”
pattern (LR-N) which offers more rejection and less ambience. Output phase
is “Pin 2 hot.”
For correct left-right stereo orientation, position the microphone so the word
“UP” is on top, with the switches on the bottom. In all modes, locating the
BP4029 nearer the sound source enhances the apparent width of the stereo
image, while decreasing room ambience. Moving away from the sound
source will result in a narrower stereo image and more “room sound.”
M-S Output Connector Pin 1 Pin 2 Pin 3
Mid XLR3M-Gray Ground Mid + Mid –
XLR5M Mic Connector: Pin 1 Pin 2 Pin 3
Side XLR3M-Red Ground Side + Side –
XLR5M Mic Connector: Pin 1 Pin 4 Pin 5
Matrix Output Connector Pin 1 Pin 2 Pin 3
Left XLR3M-Gray Ground L + L –
XLR5M Mic Connector: Pin 1 Pin 2 Pin 3
Right XLR3M-Red Ground R + R –
XLR5M Mic Connector: Pin 1 Pin 4 Pin 5
The BP4029 requires 11V to 52V DC phantom power on both XLR3M
connectors. Wiring must be balanced throughout, and all mic cables in the
system must be wired consistently: Pin 1-to-Pin 1, etc. If connecting to
unbalanced inputs, good-quality balanced line transformers m
The microphone is RoHS compliant–free from all substances specified in the
EU directive on hazardous substances.
Avoid leaving the microphone in the open sun or in areas where
temperatures exceed 110° F (43° C) for extended periods. Extremely high
humidity should also be avoided.
ust be used.
BP4029 SPECIFICATIONS
†
ELEMENTS Fixed-charge back plate
permanently polarized
condenser
POLAR PATTERNS Line-cardioid and
figure-of-eight
FREQUENCY RESPONSE 40-20,000 Hz
LOW FREQUENCY ROLL-OFF 80 Hz, 12 dB/octave
OPEN CIRCUIT SENSITIVITY –30 dB (31.6 mV) /
(Mid / Side / LR Stereo) –34 dB (19.9 mV) /
–36 dB (15.8 mV) re 1V at 1 Pa*
IMPEDANCE 200 ohms
MAXIMUM INPUT SOUND LEVEL 123 dB / 127 dB / 126 dB SPL,
(Mid / Side / LR Stereo) 1 kHz at 1% T.H.D.
DYNAMIC RANGE (typical) 101 dB / 101 dB / 102 dB,
(Mid / Side / LR Stereo) 1 kHz at Max SPL
SIGNAL-TO-NOISE RATIO
1
72 dB / 68 dB / 70 dB,
(Mid / Side / LR Stereo) 1 kHz at 1 Pa*
PHANTOM POWER 11-52V DC, 4 mA typical at 48V,
REQUIREMENTS each channel
SWITCHES M-S, LR Stereo-Wide (LR-W),
LR Stereo-Narrow (LR-N);
Flat, roll-off
WEIGHT (less cable and accessories)103 g (3.6 oz)
DIMENSIONS 236.0 mm (9.29") long,
21.0 mm (0.83") diameter
OUTPUT CONNECTOR Integral XLR5M-type
CABLE Dual 0.61 m (24") shielded
two-conductor, terminated in
two XLR3M-type connectors
ACCESSORIES FURNISHED AT8405a stand clamp for 5/8"-27
threaded stands; AT8134
foam windscreen;5/8"-27 to
3
/8"-16 threaded adapter;
protective carrying case
†
In the interest of standards development, A.T.U.S. offers full details on its test
methods to other industry professionals on request.
*1 Pascal = 10 dynes /cm
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
2
= 10 microbars = 94 dB SPL
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51972-01 ©2007 Audio-Technica U.S., Inc. Printed in Japan