In this case the microphone is simply connected via the power supply
MZN 16 P48 resp. MZN 16 P48-U (see accessories) to the inputs olthe
amplilier.
Connection to Amplifiers with unbalanced Inputs
In many cases, lor example most home-tape recorders, the input socket
is unbalanced. IIaphantom-powered microphone is to be connected to
such inputs itisgenerally necessary to use atranslormer. The secondary
01thisaudio-translormermaythenbeconnected- onesidegrounded-
to the input. Proper voltage matching is achieved by selecting asuitable
translormer ratio.
Connection to Amplifiers with High Input Sensitivity
IIthe amplilier being used has avery high input sensitivity i.e. when it is
normally intended lor use with dynamic microphones, itcan be necessary
to reduce the output voltage lrom the microphone by means 01avoltage
divider. This should be built into the microphone cable atthe amplilier
input. This way the large signal on the microphone cable is maintained up
to just belore the amplilier, which helps to increase the signal to noise ratio.
Connection to Amplifiers with Defined Input Impedances
Sennheiser studio condenser microphones can be connected directly to
allampliliers whose input impedance is larger than 200 Q. This is usual
in the majority 01cases. Should - however - the input impedance be
smaller than 200 Q, a resistor 01appropriate value should be placed in
series with the microphone so that it "sees" at least 200 Q. The voltage
division caused by this series resistor must, 01course, be considered.
The same method can be used when a higher output impedance 01the
microphone isdemanded, Inthis case again, aseries resistor can be used
to provide correct matching.
Connection to Amplifiers with Powering Facilities
II an appropriate voltage source isavailable inthe amplilier the condenser
microphone can be powered directly. The voltage should be
48 volts:!: 12volts, Itshould bestabilised and liltered, thatthe unweighted
noise voltage is less than 1 mV. The current taken by Sennheiser con-
denser microphones MKH . . . P48 is appx. 2 mA. According to the DIN
standard the leed resistors should be 2x appx. 6.8 kQ. The difference
between the two resistors should be ~ 0.4 %, This means that approx,
7 volts are lost across the resistors.
.
I
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imrmm_~
I I
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Phantom-powering 48 V
according to DIN 45596
r
c
'"
"'
<f5
allernallvely
3.3kQ
48V
MK 12 + SK 1007
The MK 12 can be connected directly to the studio pocket transmitter
SK 1007. This transmitter already contains the electronic part.
Standard Irequency response with tolerance limits MKH 124, MKH 125T
and MKH 126 P48.
To reduce low Irequency interferences, electronic units MH 124,
MH 125 T and MH 126 P48 are equipped with abuilt-in roll-off lilter.
The Irequency chart shows the corresponding response.
MKH124
MKH 125 T
MKH 125 T-U
MKH 126 P48 MKH 126P48-U
Frequencyresponse.
Directionalcharacteristic .. .
Opencircuitoutputvoltageat1000Hz
Sourceimpedanceat1000Hz
Minimalloadimpedance ....
Output level re. 1 mW/10 dynes/cm'
S/N ratio(DIN45590)
Operatingvoltage
Currenl drawn .
Temperaturerange
Connections
Microphone
HF-seclion
Connectors
Microphone-->HFsection
HF seclion--> Amplilier
Dimensions in mm
Microphone MK 12
HF section . .
Weight 01microphone
Finish MK 12
40...20000 Hz
omnidireclional
appx.3.2mV/Pa
appx.150Q
2kQ
-53.5dB
62dB
8V:t2V
appx.5mA
-10°C 10+ 70°C
1-pin LEMO-RF-plug
6-pin plug T 3402 000
1,2,5,--> 0.3--> -8 V
4 --> signal
LemoF00250/AG/3 to
LemoRC00250/AG/3
TuchelT 3403000
40.. 20000 Hz
omnidirectional
appx.20mV/Pa
appx.20Q
200 Q
-27.8dB
62 dB
12V:t 2V
appx.6mA
- 10°Cto + 70° C
1-pin LEMO RF-plug
3-pin plug to DIN 41 524
1--> signal
2 --> case, 3 --> signal
to DIN 45595
LemoF00250/AG/3 10
LemoRA00250
DIN3-pini.e.T3261001
11.5x36x12 11.5x36x12
270 x43 190 x 140
appx.91g 100g
satinnickel, salinnickel,
dull blackandTV-grey dullblackandTV-grey
alterspecilications,in particularwith regardtotechnicalimprovements.WereserveIhe
14
,
40 . 20000 Hz
omnidirectional
appx.20mV/Pa
appx.20Q
200 Q
-27.8dB
62 dB
12V:t 2V
appx.6mA
- 100C10+70°C
1-pin LEMO RF-plug
Cannon 3-pin XLR-3
1 --> case
2 --> case, 3 --> signal
LemoF00250/AG/3 to
LemoRA00250
XLR-3-11 C
11.5x36x 12
190x 155
110g
satinnickel,
duIIblackandTV-grey
40 ...20000 Hz
omnldirectional
appx.20mV/Pa
appx.20Q
600 Q(200Q upto 30 Pa)
-32dB
62 dB
48V:t 12V
appx.2mA
-10°C to + 70°C
1-pm LEMO RF-plug
3-pin plug to DIN 41524
1--> signal, 2 --> case,
3 --> signal to DIN 45 596
LemoF00250/AG/3 to
LemoRA00250
DIN3-pmi.e.T3261001
11.5x36x 12
190140
100g
satinnickel,
dull black
40 . ..20000 Hz
omnidireclional
appx.20mV/Pa
appx.20Q
600 Q(200Q up1030 Pa)
-32dB
62 dB
48V:t 12V
appx.2mA
-10°Cto + 70°C
1-pin LEMO RF-plug
Cannon 3-pin XLR-3
1 --> case, 2 --> signal,
3 --> signal
Lemo F 00250/ AG/3 to
Lemo RA 00250
XLR-3-11 C
11.5x 36x 12
190x155
110 9
salln nickel,
dull black
15
I
)
- -
=
j10dB
-
-
=
- --
-
=
MK12
-
--
-
=
=
MKH124
,
=
MKH125T
= MKH126P48
