Audio-Technica BP4001 Specifications
BP4001
12" or more on axis
LEGEND
Frequency in Hertz
Response in dB
10 dB
100
50
200
10k
5k
1k
500
2k
20k
Cardioid Dynamic Microphone
Features
• Professional cardioid dynamic microphone with extended-length
handle is ideal for on-location interviews
• The back-cavity assembly “oats” inside the handle shell,
providing exceptional isolation from handling noise
• Frequency response is tailored for natural, clear and articulate
reproduction of spoken words
• Cardioid polar pattern reduces pickup of sounds from the sides
and rear, improving isolation of desired sound source
• Rugged housing with hardened-steel grille stands up to eld use
• Integral windscreen protects against wind and breath noise
• Equipped with foam windscreen, carrying case, protective pouch
and professional stand clamp
Description
The BP4001 is a dynamic microphone with a cardioid polar pattern. It is
designed primarily for on-location interviews.
broadcast & production microphones
Specications
Element
Polar pattern
Frequency response
Open circuit sensitivity
Audio-Technica case style
Accessories furnished
In the inter est of standards devel opment, A.T.U.S.
offers full details on its test me thods to other industr y
1 Pascal = 1 0 dynes/cm
Specication s are subject to chang e without notice.
Impedance
Weight
Dimensions
Output connector
professional s on request.
2
= 10 microb ars = 94 dB SPL
Dynamic
Cardioid
80-18,000 Hz
–54 dB (1.9 mV) re 1V at 1 Pa
300 ohms
275 g (9.7 oz)
240.8 mm (9.48") long,
40.0 mm (1.57") head diameter
Integral 3-pin XLRM-type
S8
AT8470 Quiet-Flex™ stand clamp for
5
/8"-27 threaded stands; 5/8"-27 to 3/8"-16
threaded adapter; foam windscreen;
carrying case; soft protective pouch
The microphone’s cardioid polar pattern is more sensitive to sound
originating directly in front of the element, making it useful for reducing
pickup of unwanted sounds and controlling feedback.
The output of the microphone is a 3-pin XLRM-type connector.
The microphone is enclosed in a rugged housing. The included AT8470
Quiet-Flex™ stand clamp permits mounting on any microphone stand
with 5/8"-27 threads. A foam windscreen, carrying case and soft protective
pouch are also included.
Operation and Maintenance
Output is low impedance (Lo-Z) balanced. The signal appears across Pins
2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”— positive
acoustic pressure produces positive voltage at Pin 2.
To avoid phase cancellation and poor sound, all mic cables must be wired
consistently: Pin 1-to-Pin 1, etc. For a high-impedance (Hi-Z) mic input,
connect a Lo-Z balanced cable to a Hi-Z matching transformer at the
equipment input.
Take care to keep foreign particles from entering the windscreen. An
accumulation of iron or steel lings on the diaphragm, and/or foreign
material in the windscreen’s mesh surface, can degrade performance.
Architect’s and Engineer’s Specications
The microphone shall be a moving coil dynamic designed for handheld or
stand use. It shall have a cardioid polar pattern and a frequency response
of 80 Hz to 18,000 Hz. Nominal open-circuit output voltage shall be 1.9
mV at 1V, 1 Pascal. Output shall be low impedance balanced (300 ohms).
The output of the microphone shall be a 3-pin XLRM-type connector.
The microphone shall be 240.8 mm (9.48") long and have a head diameter
of 40.0 mm (1.57"). Weight shall be 275 grams (9.7 oz.). The microphone
shall include a foam windscreen, stand clamp, carrying case and soft
protective pouch.
The Audio-Technica BP4001 is specied.
frequency response: 80 –18,000 Hz
10 dB
200
100
12" or more on axis
500
1k
Frequency in Hertz
5k
2k
10k
50
LEGEND
To reduce the environmental impact of a multi-language printed document, product information is
available online at www.audio-technica.com in a selection of languages.
An de réduire l’impact sur l’environnement de l’impression de plusieurs, les informations
concernant les produits sont disponibles sur le site www.audio-technica.com dans une large
sélection de langue.
Para reducir el impacto al medioambiente, y reducir la producción de documentos en varios
leguajes, información de nuestros productos están disponibles en nuestra página del Internet:
www.audio-technica.com.
Para reduzir o impacto ecológico de um documento impresso de várias linguas, a Audio-Technica
providência as informações dos seus produtos em diversas linguas na www.audio-technica.com.
Per evitare l’impatto ambientale che la stampa di questo documento determinerebbe, le
informazioni sui prodotti sono disponibili online in diverse lingue sul sito www.audio-technica.com.
Der Umwelt zuliebe nden Sie die Produktinformationen in deutscher Sprache und weiteren
Sprachen auf unserer Homepage: www.audio-technica.com.
Om de gevolgen van een gedrukte meertalige handleiding op het milieu te verkleinen, is
productinformatie in verschillende talen “on-line” beschikbaar op: www.audio-technica.com.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
©2010 Audio-Technica U.S., Inc. audio-technica.com P52231
Response in dB
20k
polar pattern
270˚
240˚
0˚
30˚
330˚
300˚
210˚
SCALE IS 5 DECIBELS PER DIVISION
150˚
180˚
60˚
90˚
120˚
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
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