SENNHEISER MD-42 Reporting Dynamic Microphone

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

With an overall length of just 9.17" and weight of just 3.5 oz, this microphone adds virtually no heft to the end of a fish pole or the top of a minicam. Through the use of an innovative Audio-Technica design, the interference tube of the BP4073 provides a narrow acceptance angle, effective for long-distance pickup. The highly directional mics offer low self-noise and are fully RoHS-compliant - free from all substances specified in the EU directive on the reduction of hazardous substances (RoHS).

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
Switchable 80 Hz hi-pass filter & 10 dB pad
Rugged housing made of lightweight structural-grade aluminum alloy
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: 99 g (3.5 oz)
Dimensions: 233.0 mm (9.17“) 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; AT8144 windscreen; two O-Rings; protective carrying case 

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

Audio-Technica's AT875R is designed for video production and broadcast (ENG/EFP) audio acquisition. Audio-Technica's shortest shotgun microphone, it mounts conveniently on a DV camcorder without adding noticeable heft, and is ideal for use with compact digital cameras. This high-performance microphone offers a narrow acceptance angle of line + gradient design. It also features smooth, natural-sounding on-axis audio quality and excellent off-axis rejection of sound arriving from the sides and rear of mic.

Designed for video production and broadcast (ENG/EFP) audio acquisition
Extremely short length (under 7“) ideal for use with compact digital cameras
Provides the narrow acceptance angle desirable for long-distance sound pickup
Excellent sound rejection from the sides and rear of mic
Tailored response minimizes camera and handling noise
Operates on phantom power only
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: 90-20,000 Hz
Open Circuit Sensitivity: 30 dB (31.6 mV) re 1V at 1 Pa
Impedance: 100 ohms
Maximum Input Sound Level: 127 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range: 107 dB, 1 kHz at Max SPL
Signal to Noise Ratio: 74 dB, 1 kHz at 1 Pa
Phantom Power Requiremens: 11-52V DC, 2 mA typical
Weight: 80 g (2.8 oz)
Dimensions: 175.0 mm (6.89“) 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; windscreen; soft protective pouch