Neumann.Berlin M 149 Tube - Manual (Page 2)

he M 149 Tube is a variable dual-dia-
phragm microphone. The K 49 capsule – well-
known from the legendary U 47 and M 49
microphones – is followed by a tube func-tion-
ing as an impedance converter. In contrast to
earlier concepts – utilizing a transformer – the
tube is complemented with a transformerless
output circuit
design.
The M 149 Tube can thus feed long micro-
phone cables without any coloration.
Two slide switches are located below the
large, acoustically very open headgrille.
The switch at the front allows selection one
of nine directional patterns. The slide switch
at the rear operates a seven-step high pass
filter. It allows a very fine adjustment of the
cut-off frequency.
Applications
There are nine polar
patterns to choose
from, making this mi-
crophone an ideal
choice for a wide range
of recording situations.
As its ancestors, the
M 149 Tube is a superb
vocalist microphone, not
only because of the cap-
sule, but also due to its
modern circuitry, character-
ized by extremely low noise
level.
Acoustic features
The M 149 Tube is addressed
from the front, marked with the
Neumann logo. Also on the front
is the switch for the selection of
the polar patterns.
The capsule is mount-
ed elastically inside the
headgrille to eliminate
structure borne noise. The
surface below the capsule is
shaped like a cone to disperse
any reflected sound from the
acoustic upper half space.
This avoids any interference
with the primary sound arriv-
ing at the capsule directly.
A large headgrille surrounds
the capsule. It is acoustically
very open and therefore in-
creases the sonic realism.
The design of the microphone
is a registered design of
the Georg Neumann GmbH
in certain countries.