Specifications

93
ORTF Stereo
with WJ BBG Windjammers
Technical Specifications
of the MSTC 64, measured on the axis of the MK 4
capsules:
Recording angle
+
: ca. 95°
Frequency range: 40 Hz – 20 kHz
Sensitivity: 13 mV/Pa
Equivalent noise level, CCIR**: 24 dB
Equivalent noise level, A-weighted*: 15 dB-A
Signal-to-noise ratio, A-weighted*: 79 dB-A
Maximum SPL for 0.5% THD: 132 dB-SPL
Output voltage at maximum SPL: 1V
Source impedance: 35 Ohm
Minimum recommended load: 600 Ohm
Powering: 12 V ± 1 V or 48 V ± 4 V phantom
Current consumption per channel:
4 mA, independent of the supply voltage
Weight: ca. 230 g
Pin assignment (XLR-5M): see page 133
without Windjammers
MSTC 64 Ug with
BBG windscreens:
Accessories (included):
polished wood case, SG 20 stand clamp
In many situations the use of an elastic suspension is
advisable. Due to the weight of the MSTC, the A 20 S
with its stiffer elastics should be used.
popscreens and windscreens for the MSTC 64 are
described in the section beginning on page 119.
ORTF Stereo Microphone
MSTC 64
– for recordings with ORTF technique
– placement relatively uncritical
– good stereo imaging
– for a very wide range of recording applications
– for 12 / 48 V phantom powering
This microphone consists of a T-shaped body with two
built-in microphone ampli fiers, and a matched pair of
MK 4 cardioid capsules of the Colette modular system
which are mounted 170 mm apart with an included
angle of 110° (ORTF system). The stereophonic record-
ing angle
+
is 95°.
This is probably the simplest stereo technique in
general use. In al most any situation it produces an
evenly-spread stereo image with good localization,
often without the need for spot or ambient miking.
Setup is particularly quick and simple since the capsule
spacing and angles are fixed, with only a single stand
and microphone cable re quired. Placement is relatively
uncritical and the technique produces good results
even in the hands of an inexperienced or hasty user.
The MSTC 64 accepts any 12 V or 48 V standard ized
phantom powering, with the maximum sound pressure
level being slightly reduced (ca. 4 dB) when powered
by 12 V.
The two MK 4g capsules included with the MSTC 64g
are a specially selected, matched pair.
The designation MSTC 64g refers to a dual micro-
phone amplifier MSTC 6g equipped with two MK 4g
cardioid capsules.
Surface finish: matte gray (g) or nickel (ni)
ORTF microphone MSTC 64 Ug
B 5 D windscreens, pg. 125
A 20 S elastic suspension, pg. 57
+
This is the range within which the sound sources should be
placed, as “seen“ by the microphone.
*IEC 61672-1, **IEC 60268-1
COLETTE
modular