Wiring hookups for different sources, Works with servo inputs only, Simple wiring for servo bias inputs only – Lectrosonics UM450 User Manual
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Frequency Synthesized UHF Belt-Pack Transmitter
Wiring Hookups for Different Sources
In addition to the microphone and line level wiring hook
ups illustrated below, Lectrosonics makes a number of
cables and adapters for other situations such as con
necting musical instruments (guitars, bass guitars, etc.)
to the transmitter. Visit
click on Accessories, or download the master catalog.
A lot of information regarding microphone wiring is also
available in the FAQ section of the web site at:
Follow the instructions to search by model number or
other search options.
Compatible Wiring for Both Servo Bias Inputs and Earlier Transmitters:
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET
Compatible wiring for microphones such as
Countryman E6 headworn and B6 lavaliere.
PIN
4
T A5 F
1
2
3
SHIELD
A UDI O
1
2
3
4
5
3.3 k
1.5 k
5
PLUG
DPA MICROPHONES (Danish Pro Audio miniature models)
This wiring is for DPA lavalier
and headset microphones.
NOTE: The resistor value can range from 3k to 4k ohms.
2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET
PIN
2.7 k
SHIELD
Compatible wiring for microphones
such as negative bias TRAM models.
5
1
2
3
4
AUDIO
1
4
2
3
5
T A5 F
PLUG
NOTE: The resistor value can range from 2k to 4k ohms.
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET
WITH EXTERNAL RESISTOR
DRAIN (BIAS)
SOURCE (AUDIO)
SHIELD
Used for 3-wire lavaliere
microphones that require an
external resistor such as the
Sanken COS-11.
This wiring is fully compatible with 5-pin inputs on Lectrosonics
transmitters such as the LM and UM Series. This is the wiring
for the Lectrosonics M152 lavaliere microphone.
Simple Wiring for Servo Bias Inputs Only:
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET
such as Countryman B6 Lavalier
and E6 Earset models and others.
NOTE: This servo bias wiring is not compatible with earlier
versions of Lectrosonics transmitters. Check with the factory
to confirm which models can use this wiring.
2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET
Simplified wiring for microphones
4 VOLT POSITIVE BIAS 2-WIRE ELECTRET
Most common type of wiring for lavaliere mics.
Fully compatible with 5-pin inputs on Lectrosonics
transmitters such as the LM and UM Series.
UNBALANCED LINE LEVEL SIGNALS
SLEEVE
SHIELD
A UDI O
TIP
LINE LEVEL
RCA or 1/4” PLUG
For signal levels up to 3V (+12 dBu) before limiting. Fully
compatible with 5-pin inputs on other Lectrosonics transmitters
such as the LM and UM Series. A 20k ohm resistor can be
inserted in series with Pin 5 for an additional 20 dB of
attenuation to handle up to 30V (+32 dBu).
PIN
1
1
2
3
4
5
2
3
4
T A5 F
5
PLUG
BALANCED AND FLOATING LINE LEVEL SIGNALS
*NOTE: If the output is balanced but center
tapped to ground, such as on all Lectrosonics
TA5F
PLUG
XLR JACK
receivers, do not connect Pin 3 of the XLR jack
to Pin 4 of the TA5F connector.
LO-Z MICROPHONE LEVEL SIGNALS
For low impedance dynamic mics or electret
mics with internal battery or power supply.
Insert 1k resistor in series with pin 3 if attenuation is needed
XLR JACK
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET
NOTE: This servo bias wiring is not compatible with earlier
versions of Lectrosonics transmitters. Check with the factory
to confirm which models can use this wiring.
Simplified wiring for microphones such as negative bias TRAM.
NOTE: This servo bias wiring is not compatible with earlier
versions of Lectrosonics transmitters. Check with the factory
to confirm which models can use this wiring.
Rio Rancho, NM
13