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ifications. The wide dynamic range is impres-
sive, as peak output can be ±10 V, at 20 mA.
The ideal operating point of the tube is main-
tained throughout its entire life expectancy.
Plate current and filament voltage are constantly
regulated. A sensor circuit monitors and com-
pensates for any voltage drop across the micro-
phone cable. The tube is heated up slowly
through inverse current limiting to guarantee
long life. Optimum operating conditions are
reached within a very short time.
Filter
A seven-position slide switch is located on the
back of the microphone. It selects a high-pass
filter, advancing in half-octave steps between
20Hz and 160 Hz (–3dB).
This filter is useful to sup-
press rumble from air-condi-
tioning and in windy situations.
In addition, the filter provides
an effective tool to control the
audio signal when the microphone is used at
close distance and therefore proximity effect
alters the program material.
Delivery Range
The specifically designed
new N149 A power supply
unit feeds the M149 Tube
through an 8-core cable. The
output connector for the au-
dio signal is a 3-pin XLR. The
output signal is balanced.
The microphone comes as a
set in a high-quality aluminum case, together
with the 8-core microphone connecting cable,
the N 149A power supply with plug-in mains
unit, the EA170 full elastic microphone sus-
pension and a dust cover.
Application Hints
•Universal tube mic
•Its warm and yet transparent sound gives
volume and presence to a vocalist
•A wide range of adjustments provide the most
subtle differentiation of sound, especially in the
range of proximity effect
•Mic for broadcasting, dubbing, and voice-over
•Spot mic for close miking of solo instruments,
especially strings, wind instruments, and piano
These are just some of the most common
applications. We recommend additional experi-
mentation to gain maximum use from this
microphone.
Features
• Switchable tube microphone
•Transformerless circuitry
• High output level
• Pressure gradient transducer
with the M 49 capsule
• Acoustically very open wire
mesh cage
• Nine directional charac-
teristics: omni, wide angle
cardioid, cardioid, hyper-
cardioid, figure-8, and one
intermediate position each
• 7fold switchable low
frequency roll-off
Delivery Range
M149Tube Microphone
N149A Power supply unit with power cable,
EA170 Elastic suspension,
KT8 Microphone cable,
Aluminium case,
Dust cover
Catalog No.
M149Tube (230V, EU)...................ni.........008390
M149Tube (117V, US)...................ni .........008399
M149Tube (230V, UK)...................ni.........008403
Selection of Accessories
Auditorium hanger, MNV 87...........ni ..........006804
Auditorium hanger, MNV 87 mt ...blk .......006806
Table stand, MF 3...................................blk .......007321
Table stand, MF 4...................................blk .......007337
Stand extension, STV 4........................blk .......006190
Stand extension, STV 20.....................blk .......006187
Stand extension, STV 40.....................blk .......006188
Stand extension, STV 60.....................blk .......006189
Popscreen, PS15.....................................blk .......008472
Popscreen, PS20a................................blk .......008488
Microphone cable, IC 3 mt................blk .......006543
Adapter cable AC 25............................blk .......006600
A complete survey and detailed descriptions of all
accessories are contained in the accessories
catalog.
Meaning of color codes:
blk = black
ni = nickel