Listen Technologies LA-437 User Manual

ListenTech-Note

Doc. # LTN0036 Page 1 of 4 Revision: 07-29-19 BC

LA-437 ListenTALK Line/Headset Mix Cable

Overview:

This tech note will discuss the LA-437 Line/Headset Mix Cable for the LK-1 ListenTALK
Transceiver and various real-world applications. This device allows the leader of a ListenTALK
group to use a secondary device (e.g. mp3 player, smartphone, etc.) to add music or sound
clips to a tour. Applications for the LA-437 are not limited to the examples outlined.

Connecting to the LA-437:

Step 1: Connect the

3.5mm plug from the
headset into the LA-437
Headset connector

Step 3: Connect the 3.5mm
plug (not included) from the
Line Input Device into the LA­437 input connector

Step 2: Connect
the LA-437 cable
to the ListenTALK
Transceiver
leader unit

(LA-437)

(LK-1)

ListenTech-Note

Doc. # LTN0036 Page 2 of 4 Revision: 07-29-19 BC

Line Input Consideration:

The line input on the LA-437 utilizes a TRS connection. In other words, the 3.5mm plug must
have a tip-ring-sleeve design to work properly in the line input. The outline of this type of
connection is diagramed below:

Most standard 3.5mm auxiliary cables will have this type of design. However, it is important to
verify this connection, especially if the line input sound is missing or appears distorted.

Attachment Clip Options:

The attachment clip can either be attached to the cable or attached to the unit itself. This will
allow the user to easily attach the LA-437 to a more convenient location, such as an article of
clothing.

Attached to cable

Attached to unit

Tip (Left audio)

Ring (Right audio)

Sleeve (Ground)