Lectrosonics LMa User Manual download pdf (Page 10)

LMa

LECTROSONICS, INC.

The wiring diagrams included in this section represent

the basic wiring necessary for the most common types

of microphones and other audio inputs. Some micro-

phones may require extra jumpers or a slight variation

on the diagrams shown.

It is virtually impossible to keep completely up to date

on changes that other manufacturers make to their

products, thus you may encounter a microphone that

differs from these instructions. If this occurs please call

our toll-free number listed under Service and Repair in

this manual or visit our web site at:

www.lectrosonics.com

10k

To Virtual Ground

Audio Amplifier

BIAS

MIC

BIAS SELECT

LINE IN

GND

30uF

+5 VDC

Servo Bias

Pin 4 to Pin 1 = 0 V

Pin 4 Open = 2 V

Pin 4 to Pin 2 = 4 V

To Limiter Control

30uF

500 Ohm

100 Ohm

2.7K

200 Ohm

3.3uF

100 Ohm

5-Pin Input Jack Wiring

Audio input jack wiring:

PIN 1 Shield (ground) for positive biased electret lava-

liere microphones. Shield (ground) for dynamic

microphones and line level inputs.

PIN 2 Bias voltage source for positive biased electret

lavaliere microphones.

PIN 3 Low impedance microphone level input for

dynamic microphones. Also accepts hand-held

electret microphones provided the microphone

has its own built-in battery.

PIN 4 Bias voltage selector for Pin 3. Pin 3 voltage (0, 2

or 4 volts) depends on Pin 4 connection.

Pin 4 tied to Pin 1: 0 V

Pin 4 Open: 2 V

Pin 4 to Pin 2: 4 V

PIN 5 High impedance, line level input for tape decks,

mixer outputs, musical instruments, etc.

TA5F Latchlock

Insert

Insulator

Strain Relief

TA5F Backshell

with Strain Relief

Remove strain relief if using dust boot

TA5F Backshell

(Strain Relief

removed)

Dust Boot (35510)

Note: If you use the dust boot, remove the rubber

strain relief that is attached to the TA5F cap, or the

boot will not ﬁt over the assembly.

Installing the Connector:

1) If necessary, remove old connector from microphone

cable.

2) Slide Rubber Boot onto microphone cable with the

large end facing away from the microphone. (See illus-

tration above.)

3) If necessary, slide the 1/8-inch black shrink tubing

onto the mircrophone cable. (This tubing is needed

for some cables to ensure the cable ﬁts snugly in the

rubber boot.)

4) Use the resistors and connector included with this kit

to conﬁgure the TA5F to your particular microphone.

(See Wiring Diagrams below.) A length of .065 OD

clear tubing is included if insulating the resistor leads

or shield wire is necessary. (Remove rubber strain

relief from connector backshell by pulling it out of the

backshell.)

5) Slide the Strain Relief over the TA5F Insert and

crimp as shown to the right. Then insert the TA5F

Insert and Strain Relief in the TA5F Latchlock.

Screw the TA5F Flex Relief onto the TA5F Latch-

lock.

6) If needed, position and shrink the 1/8-inch shrink

tubing on the microphone cable, then slide the Rub-

ber Boot down over the TA5F connector.

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Lectrosonics LMa User Manual Page 10

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