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 Neumann 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 Neumann
M 150 Tube microphone 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 Neumann M 150
Tube microphone is an ideal microphone for any stereo, 5.1 or 7.1 surround
recording, particularly DECCA Tree technique.