Audio Technica BP4071 Line + gradient condenser microphone

With directivity equal to mics up to 50% longer, the BP4071 has been specially created to meet the pickup demands of broadcasting, film/TV sound, professional recording, wildlife recording and theater sound reinforcement. Particularly useful for miking dynamic action in film/TV audio as well as in 'spot' miking techniques in the music studio or theater, the 15.55“-long BP4071 provides a low noise floor and direct-coupled, balanced output for a clean signal even in high-output conditions. Audio-Technica has pioneered an interference tube design in the BP4071 that provides the same directivity as mics up to 50 percent longer.

• Designed for use in broadcasting, film/TV production, and theater sound reinforcement applications
• Direct-coupled, balanced output ensures a clean signal even in high-output conditions
• Innovative acoustic design provides same directivity as mics up to 50% longer
• Rugged housing made of lightweight structural-grade aluminum alloy
• Transformerless design for improved pickup of transients
• Switchable 80 Hz high-pass filter & 10 dB pad
• RoHS-compliant - free from all substances specified in the EU directive on the reduction of hazardous substances (RoHS)

• Element: Externally polarized (DC bias) capacitor
• Polar Pattern: Line + gradient
• Frequency Response: 20-20,000 Hz
• Low Frequency Roll Off: 80 Hz, 12 dB/octave
• Open Circuit Sensitivity: -29 dB (35.5 mV) re 1V at 1 Pa
• Impedance: 50 ohms
• Maximum Input Sound Level: 141 dB SPL, 1 kHz at 1% T.H.D.; 151 dB SPL, with 10 dB pad (nominal)
• Dynamic Range: 128 dB, 1 kHz at Max SPL
• Signal to Noise Ratio: 81 dB, 1 kHz at 1 Pa
• Phantom Power Requiremens: 48V DC, 4.8 mA typical
• Weight: 136 g (4.8 oz)
• Dimensions: 395.0 mm (15.55“) long, 21.0 mm (0.83“) maximum body diameter
• Output Connector: Integral 3-pin XLRM-type
• Accessories: AT8405a stand clamp for 5/8“-27 threaded stands; 5/8“-27 to 3/8“-16 threaded adapter; AT8145 windscreen; two O-Rings; protective carrying case

Designed for video production and broadcast (ENG/EFP) audio acquisition, the AT8015 provides the narrow acceptance angle desirable for long-distance sound pickup, along with excellent sound rejection from the sides and rear of mic. 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.

Designed for video production and broadcast (ENG/EFP) audio acquisition
Provides the narrow acceptance angle desirable for long-distance sound pickup
Excellent sound rejection from the sides and rear of mic
Switchable low-frequency roll-off
Operates on battery or phantom power
RoHS compliant - free from all substances specified in the EU directive on hazardous substances

Element: Fixed-charge back plate, permanently polarized condenser
Polar Pattern: Line + gradient
Frequency Response: 40-20,000 Hz
Low Frequency Roll Off: 80 Hz, 12 dB/octave
Open Circuit Sensitivity: Phantom: -38 dB (12.5 mV) re 1V at 1 Pa Battery: -39 dB (11.2 mV) re 1V at 1 Pa
Impedance: Phantom: 250 ohms Battery: 300 ohms
Maximum Input Sound Level: Phantom: 132 dB SPL, 1 kHz at 1% T.H.D. Battery: 120 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range: Phantom: 110 dB, 1 kHz at Max SPL Battery: 98 dB, 1 kHz at Max SPL
Signal to Noise Ratio: 72 dB, 1 kHz at 1 Pa
Phantom Power Requiremens: 11-52V DC, 2 mA typical
Battery Type: 1.5V AA/UM3
Battery Current Life: 0.4 mA / 1200 hours typical (alkaline)
Switch: Flat, roll-off
Weight: 195 g (6.9 oz)
Dimensions: 460.0 mm (18.11“) long, 21.0 mm (0.83“) diameter
Output Connector: Integral 3-pin XLRM-type
Accessories: AT8405a stand clamp for 5/8“-27 threaded stands; 5/8“-27 to 3/8“-16 threaded adapter; AT8135 windscreen; battery; protective carrying case

The MD 42 is a high-quality reporter's microphone with omni-directional pick-up pattern. It has been specially optimised for rough use in live reporting and broadcasting environments. The MD 42 is a very 'good-natured' microphone whose design avoids wind and handling noise problems. Colour: black, sound inlet basket: refined steel, black.
Features

    Two-ply sound inlet basket provides increased protection from wind and pop noise
    Rugged metal housing
    Rubber mounted capsule (or Elastically mounted capsule) ensures low sensitivity to handling noise
    Omni-directional pick-up pattern ensures excellent speech intelligibility without having to point the microphone directly at your interview partner

Pick Up Pattern omni-directional

Frequency response 40 - 18 000 Hz

Sensitivity 2,0 mV/Pa

Ιmpedance 1000 Ohm

Dimensions Ø 49 x 250 mm

Weight 360 gr

Internally switchable proximity effect compensation and sensitivity reduction.

The BCM 104 condenser microphone is the first product in the new Broadcast Line,
which is especially tailored to the demands of professional radio announcing.
What sets the Broadcast Line apart is a completely independent, functionally-
optimized design derived from extensive 3D simulations.
The large-diaphragm condenser capsule used in the BCM 104 has a cardioid directional
pattern with internally switchable proximity effect compensation. A second switch allows
the sensitivity to be reduced by 14 dB.
The microphone headgrill twists off easily for quick cleaning. Neumann offers optional,
color-coded headgrills so that, for reasons of hygiene, each announcer working at an
announcing desk can use his or her individual headgrill.
Directly in front of the capsule, mounted on a frame holder, is a piece of fine gauze that
serves as a built-in popscreen.
The BCM 104 has an elastic mount against structure-borne noise, that is compatible with
standard broadcast-segment microphone arms.

Features:
Cardioid microphone for broadcast & studio
Large diaphragm condenser capsule with
switchable proximity compensation
Distinctive design
Integrated pop screen
Quick release head grille for easy cleaning
Individual head grilles available for each user

Acoustic features
The microphone headgrill houses the K 04 large-diaphragm capsule, which has a flat frequency
response up to 3 kHz. Higher frequencies have an increased presence of 2 dB maximum.
Since the above-mentioned microphone characteristics are obtained without the use of resonance
effects, the microphone features excellent transient response and transmits all transient phenomena
of music and speech without any coloration.
The integrated Pop Screen
A pop screen not only prevents the occurrence of plosive pop noises in vocal recordings, but also
efficiently prevents unwanted particles, from respiratory moisture, nicotine, to food remnants, from
settling on the diaphragm.
The pop screen can be removed for cleaning without the use of tools.

Electrical features
Instead of a transformer to couple the microphone output to the supply voltage, the BCM 104
has an electronic circuit which, like a transformer, provides for good common mode rejection.
Interference induced in the balanced modulation line is thus suppressed as usual.
With a very low self-noise of 7 dB(A), and an overload capability extending to 138 dB SPL,
the BCM 104 has a dynamic range of 131 dB (DIN/IEC 651).
Filter and Preattenuation
The BCM 104 amplifier has a linear operation down to 20 Hz. An active filter efficiently suppresses
signals below this frequency. In order to compensate for the proximity effect, a high-pass filter,
electronically activated by a switch, is built into the microphone. This filter reduces frequencies
below 100 Hz by 12 dB/octave.
A 14-dB preattenuation switch is provided in order to adjust the sensitivity, if necessary,
to transmission circuits designed for dynamic microphones. But this will increase the
self noise by 14 dB.Both switches are located inside the microphone housing, since they
will normally be operated only once, when the broadcasting facility is set up.
Mounting
The preferred mode of operation is to suspend the BCM 104 from a standard studio boom arm.
A thread adapter to fit different connector threads is included.
In order to provide protection from structure-borne noise, both the capsule and the microphone
in its mount are elastically suspended.
The optional SG 5 swivel mount allows additional angling of the BCM 104 by +/-90 degrees.

Application hint:
While designed to be an announcer's mic for broadcasting and studio, this is
just one of the most common applications. With additional experimentation,
you will gain maximum use from this microphone.

Technical Description:
Acoustical operating principle: Pressure gradient transducer
Directional pattern: Cardioid
Frequency range: 20 Hz -- 20 kHz
Sensitivity at 1 kHz into 1 kohm: 22 mV/Pa
-14 dB attenuation: 4.4 mV/Pa
Rated impedance: 50 ohms
Rated load impedance: 1000 ohms
Equivalent SPL CCIR 468-3: 18 dB
Equivalent SPL DIN/IEC 651: 7 dB-A
S/N ratio CCIR 468-3: 76 dB
S/N ratio DIN/IEC 651: 87 dB
Maximum SPL for THD 0.5%: 138 dB
Maximum SPL for THD 0.5% with preattenuation: 152 dB
Maximum output voltage: 10 dBu
Dyn. range of the mic. amplifier DIN/IEC 651: 131 dB
Supply voltage: 48 V +/- 4 V
Current consumption: 3.2 mA
Matching connector: XLR 3 F
Weight: 500 g
Diameter: 64 mm
Length: 85 mm

Broadcaster - ?The Master of the Airwaves?

Like its name suggests this R?DE microphone was specifically designed ?ON-AIR?
applications where wide frequency response and low distortion are demanded.
Winner of the Radio World/US National Association of Broadcasters (NAB) ?What?s
Cool? award in 1998, the Broadcaster has become an industry standard when studio
sound quality is required for on air applications.
Utilizing an Australian designed and manufactured R?DE 1? externally biased condenser
transducers, the Broadcaster features a switch-able high pass filter to remove low frequency
rumble. A unique ?ON-AIR? LED indicator can be switched ?on? or ?off? by shorting contacts
on the 5 pin audio connector. This feature allows console operators to warn the ?Talent?
that the mic is live. 

SPECIFICATIONS:
Features:
True condenser transducer On-Air indicator L.E.D. Ultra low noise
Cardioid polar pattern with high 180 rejection Voice tailored Low Cut
Filter Internal Pop Filter Rugged stainless steel body
Acoustic principle: Externally polarised 25mm (1?) condenser
Directional pattern:  Cardioid
Frequency range: 20 Hz ~ 20 kHz
Output impedance:  40Ω
Signal noise ratio din iec 651:
>80 dB (1kHz rel 1 Pa; per IEC651, IEC268-15)
Equvalent noise: 114 dB (per IEC651, IEC268-15)
Power supply voltage: P48, P24 phantom
Weight without battery: 577g
Weight with battery: 1.3kg
Dimensions width: 167mm
Dimensions depth: 50mm
Dimensions height: 50mm
Maximum output voltage: +2 dBu (@ 1% THD into 1kΩ)