In this case the microphone is simply connected via the power supply MZN 16 P 48 resp. MZN 16 P 48-U (see accessories) to the inputs olthe amplilier.

denser microphones MKH . . . P 48 is appx. 2 mA. According to the DIN standard the leed resistors should be 2 x 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.

Connection to Amplifiers with unbalanced Inputs

In many cases, lor example most home-tape recorders, the input socket is unbalanced. II a phantom-powered microphone is to be connected to such inputs it is generally necessary to use a translormer. The secondary

01this audio-translormermaythen be connected- one sidegrounded-

to the input. Proper voltage matching is achieved by selecting a suitable translormer ratio.

Connection to Amplifiers with High Input Sensitivity

IIthe amplilier being used has a very high input sensitivity i. e. when it is normally intended lor use with dynamic microphones, it can be necessary to reduce the output voltage lrom the microphone by means 01a voltage divider. This should be built into the microphone cable at the 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 all ampliliers 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 is demanded, In this case again, aseries resistor can be used to provide correct matching.

Connection to Amplifiers with Powering Facilities

II an appropriate voltage source is available in the amplilier the condenser

microphone can be powered directly. The voltage should be

48 volts:!: 12 volts, It should be stabilised and liltered, that the unweighted noise voltage is less than 1 mV. The current taken by Sennheiser con-

 

 

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Phantom-powering 48 V

<f5

allernallvely

 

 

 

; ,

according

to DIN 45596

 

3.3 kQ

 

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.

=

 

 

 

 

 

 

- -

j10dB

 

-

 

--

-

- -

=

 

-

 

=

MK12

-

- -

 

 

 

=

MKH124

 

 

 

 

 

=

,

 

 

 

 

 

= MKH125T

 

 

 

 

 

 

=

MKH126P48

 

 

 

 

 

 

Standard Irequency response with tolerance limits MKH 124, MKH 125 T and MKH 126 P 48.

To reduce low Irequency interferences, electronic units MH 124, MH 125 T and MH 126 P 48 are equipped with a built-in roll-off lilter. The Irequency chart shows the corresponding response.

 

 

 

MKH124

 

MKH

125 T

Frequencyresponse.

 

 

40...20000

Hz

40..

20000 Hz

 

 

omnidireclional

omnidirectional

Directionalcharacteristic ..

.

Open circuitoutput voltageat 1000 Hz

 

appx.

3.2 mV/Pa

appx. 20 mV/Pa

Sourceimpedanceat 1000 Hz

 

appx.

150 Q

appx. 20 Q

Minimalloadimpedance

....

 

2kQ

 

 

200 Q

 

-53.5dB

 

-27.8dB

Output level re. 1 mW/10 dynes/cm'

 

62dB

 

 

62 dB

S/N ratio (DIN45 590)

 

 

 

 

 

 

8V:t2V

 

12V:t

2V

Operatingvoltage

 

 

 

 

 

appx.

5 mA

appx. 6 mA

Currenl drawn .

 

 

Temperaturerange

 

 

-10°C

10+ 70°C

- 10° C to + 70° C

Connections

 

 

 

 

 

1-pin

LEMO RF-plug

Microphone

 

 

1-pin

LEMO-RF-plug

HF-seclion

 

 

6-pin

plug

T 3402 000

3-pin

plug to DIN 41 524

 

 

 

1,2,5,-->

0.3--> -8 V

1 --> signal

 

 

 

4 --> signal

 

2 --> case, 3 --> signal

 

 

 

 

 

 

to DIN 45595

MKH 125 T-U

40. 20000 Hz omnidirectional

appx. 20 mV/Pa appx. 20 Q

200Q

-27.8dB

62dB 12V:t 2V

appx. 6 mA

- 100 C10+ 70°C

1-pin LEMO RF-plug Cannon 3-pin XLR-3

1 --> case

2 --> case, 3 --> signal

MKH 126 P 48

40. . . 20000 Hz omnldirectional appx. 20 mV/Pa appx. 20 Q

600Q (200 Q up to 30 Pa) -32dB

62dB

48V:t 12V

appx. 2 mA

-10°Cto + 70°C

1-pm LEMO RF-plug

3-pin plug to DIN 41524

1 --> signal, 2 --> case,

3 --> signal to DIN 45 596

MKH 126 P48-U

40 . . . 20000 Hz omnidireclional appx. 20 mV/Pa appx. 20 Q

600 Q (200 Q up 1030 Pa) -32dB

62dB 48V:t 12V

appx. 2 mA

-10°Cto + 70°C

1-pin LEMO RF-plug Cannon 3-pin XLR-3

1 --> case, 2 --> signal,

3 --> signal

Connectors Microphone-->HFsection

HF seclion--> Amplilier Dimensions in mm

Microphone MK 12

HF section . .

Weight 01 microphone

Finish MK 12

Lemo F 00250/AG/3 to Lemo RC 00250/AG/3 TuchelT 3403 000

11.5x36x12 270 x43

appx. 91 g satin nickel,

dull black andTV-grey

Lemo F00250/ AG/3 10

Lemo RA 00250

DIN 3-pin i. e. T 3261001

11.5x36x12 190 x 140

100 g

salin nickel,

dull black and TV-grey

Lemo F00250/ AG/3 to

Lemo F 00250/AG/3 to

Lemo

F 00250/ AG/3 to

Lemo RA 00250

Lemo RA 00250

Lemo

RA 00250

XLR-3-11 C

DIN 3-pm i. e. T 3261001

XLR-3-11 C

11.5 x 36 x 12

11.5 x 36 x 12

11.5 x 36 x 12

190x

155

190140

190x155

110 g

 

100 g

110 9

 

satin nickel,

satin nickel,

salln nickel,

duIIblack and TV-grey

dull black

dull black

We reserve Ihe

alter specilications, in particularwith regardto technical improvements.

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