Lectrosonics UM450 User Manual download pdf (Page 13)

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 www.lectrosonics.com and

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:

http://www.lectrosonics.com/faq.htm

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.

T A5 F

SHIELD

A UDI O

3.3 k

1.5 k

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

2.7 k

SHIELD

Compatible wiring for microphones

such as negative bias TRAM models.

AUDIO

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).

T A5 F

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

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Lectrosonics UM450 User Manual Page 13

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