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Neumann M 150
Tube Microphone |
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Product Code:
M150TUBE
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Since the 1950s,
the Neumann M 50 has been heralded as the ideal microphone for orchestral
recording and string scoring. With its phenomenal transient response and unique
directional characteristic, this classic mic has endeared many fans, both in the
control room and on the soundstage.
The new M 150 Tube* takes many of the features from the original M 50 and
incorporates them in a very modern microphone. With low self noise, a Titanium
membrane and capsule, transformerless tube amplifier and sophisticated power
supply, the M 150 Tube is not a reissue but an entirely new microphone in its
own right.
Acoustical features
The Titanium diaphragm of the pressure capsule is 12 mm in diameter and is
exceedingly thin. Although Titanium has been known to have unique and desirable
characteristics for some time, it has, until very recently, been very difficult
to procure in the quality necessary for use in a microphone of this type.
The headgrille is shaped just like that on the original M 50, as requested by
various top engineers in the recording industry. Due to mounting the pressure
capsule with the diaphragm flush to the surface of a small (40 mm) sphere, the
directional characteristic of the M 150 Tube is entirely unique.
At the lowest frequencies, this system is a pure omnipressure transducer with a
perfectly circular polar pattern. However, in the mid- and upper frequencies,
the pickup pattern becomes more narrow. The M 150 Tube is an ideal microphone
for any stereo, 5.1 or 7.1 surround recording, particularly DECCA Tree
technique.
Electrical features
The dynamic range of the M 150 Tube is 119 dB, allowing reproduction of the full
musical expression, without restraint.
With a low self noise of 15 dB-A, more gain can be used without risk of adding
noise to the final product. The transformerless output circuit of this
microphone allows for extremely fine reproduction of small signals and low
frequency information. Also, long cable runs can be used with no loss of signal
quality.
Filter and pre-attenuation
At the rear of the microphone is a �10 dB switch and a switchable footfall
filter for the attenuation of frequencies below 40 Hz. In the position �LIN�, a
limit frequency of 16 Hz is made active. This is mainly to protect the console
inputs from the effects of sub-audio noise (e.g. strong air currents). The �10
dB function is effected by voltage division and should be used only where the
danger of over-loading follow-on equipment with very high signal levels is
present. This switch does not extend the dynamic range of the microphone, but
shifts the output level down by 10 dB. |
� All
Titanium capsule
� Unparalleled transient accuracy
� Pressure omni capsule for extended low frequency response
� Modern version of the world-famous M 50
� Transformerless tube amplifier based on the award-winning M 149 Tube
microphone
� Ideal for DECCA tree recording and surround miking techniques
� Very low self noise of 15 dB-A
� Stereo sets with consecutive serial numbers |
| Acoustical operating
principle |
Pressure transducer |
| Directional pattern |
Omnidirectional |
| Frequency range |
20 Hz ... 20 kHz |
| Sensitivity at 1 kHz into 1
kohm |
20 mV/Pa |
| Rated impedance |
50 ohms |
| Rated load impedance |
1 kohms |
| Equivalent noise level, CCIR |
28 dB |
| Equivalent noise level,
A-weighted |
15 dB-A |
| Signal-to-noise ratio, CCIR (rel. 94 dB
SPL) |
66 dB |
| Signal-to-noise ratio, A-weighted (rel. 94
dB SPL) |
79 dB |
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Typical SPL (tube
characteristic) |
K < 0,5 %: 114 dB, K
< 5 %: 134 dB |
| Maximum output voltage |
8 dBu |
| Dynamic range of the microphone amplifier
(A-weighted) |
K < 0,5 % *: 99 dB, K < 5 %:
119 dB |
| Powering |
Power supply N 149 A |
| Matching connector |
Microphone: DIN 8F, Power Supply:
XLR3F |
| Weight |
800 g |
| Diameter |
78 mm |
| Length |
165 mm |
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