Neumannberlin TLM 67 User Manual download pdf (Page 30)

30

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 function-

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.

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