External Phantom Powering
All micraphone combinations with the powering modules K 3 N and
K 3 -U m~y be phantom powered with voltages between 12. . .48 V
fram extern al power supplies. The ON/OFF-switch has to remain
in the position "ON" when the microphone is phantom powered
since the switch otherwise also disconnects the audio output. The
battery, in these cases, is not used up. If for any reason the ex-
ternal power supply fails the micraphone remains in operation if a
battery has been inserted.
The principle of phantom powering for 48 V and the powering
module K 3 N is shown in figA. Piease note: The feed resistors have
to have different values for other voltages than 48 V (e.g. 680 f! at
12 V supply).
i~l
,"iW:
l_..:o: J
[
Phantom-powenng 48 V
according 10DIN 45596
alternatively
- 48V ,3.3 kf!
-.L
Fig.4
Low-cut Filter
The powering modules K 3 N and K 3-U have a switchable low-
cut filter with three positions to attenuate interfering low frequencies.
In position 1the filter is switched off and the two positions 11and 111
attenuate low frequency interferences corresponding with the ,
characteristics shown in fig. 5. This filter thus effectively reduces
wind noise, foot steps and handling noise. When recording outdoors
and also for close miking applications a suitable wind screen e. g.
MZW 30, MZW 201 and the MZW 415 resp. should be used in
order to first of all reduce avoidable interferences. If the low-cut
filter is inserted it, of course, also attenuates part of the otherwise
use~ble low-frequency range. Filters of that type should be always
usetJ intelligently and with discretion. It is always recommended to
check your recordings e.g. with headphones during the recording
process in order to avoid disappointments.
10 dB
50
100
200
500 1000
Fig.5
18
Connector-wiring of the Modular Microphones
Wiring diagram N
Connector . . . 3 pin male connector
to DIN 41524 . Pinconnections
Wiring diagram -U
Connector . . . male XLR-3
Pin connections
Connection cables
Sennheiser electronic offers a multitude of different connection
cables for your modular micraphone system. The correct connection
cable for your tape recorder may be easily found in our "Mikrofon-
Anschluß-Fibel". To connect these micraphones to sound film
cameras a "Camera-Anschluß-Fibel" may be obtained through your
dealer, the Sennheiser representation in your country or directly
fram Sennheiser electronic, 3002 Wedemark 2. The booklets
mentioned are free of charge.
Mounting the Microphones
The micraphones are supplied
with a quick release clamp
MZG104-1. This clamp pro-
vides mounting of the micro-
phone on standard 3/8" tripod
threads. Twocable
stands are
available as optional accessor-
ies to which the clamp may be
alternatively mounted. The
MZT 104 is a light collapsable
plastic desk stand and the
MZT 105-1 is asolid metal
studio-type desk stand.
~
19
I
)
Pin Audio
Externalpower
signal
to DIN45596
1:
Audio (+) Supply (+)
2:
Ground
Supply (-)
3:
Audio (-) Supply (+)
Pin Audio
Extern al power
signal
supply
1:
Ground
Supply (-)
2:
Audio (+)
Supply (+)
3:
Audio (-) Supply (+)
