JK Audio THAT-2 User Manual

THAT-2

Telephone Handset Audio Tap

User Guide

JK Audio

Features

The name THAT-2 stands for "Telephone Handset Audio
Tap" which is a perfect description of this product. Simply

install THAT-2 between the handset and the base of your
telephone and you will be able to record audio from the
telephone and send audio into the telephone.

To Phone Jacks

There are two input jacks on THAT-2. You can use either
the red RCA phono jack on the front or the female XLR
jack on the back. These are line level inputs for signals
that you want to send down the phone line. These jacks
can be connected to an audio output such as the
headphone output jack on a tape recorder, the line output
of a PC audio card, or the line output from a CD player or
audio mixer.

From Phone Jacks

There are two output jacks on THAT-2. Both the white
RCA phono jack on the front, and the male XLR jack
carry the same signal.

These mic level output jacks provide a mix of both sides
of the conversation. In other words, whatever you send
down the phone line will come back on these jacks mixed
with the audio from the other side of the call. This mix
ratio is not adjustable. It is a function of the telephone,
not our product. As it turns out, this is a suitable mix ratio
for most applications.

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Connection

THAT-2 connects between the handset and the base of
your telephone. Follow these simple steps…

1. Unplug the modular handset cord from the base of
your telephone.

2. Using the black handset jumper cord that we have
provided, connect the Telephone jack of THAT-2 to
the handset jack on the base of your telephone.

3. Plug your telephone’s handset cord and handset into
the Handset jack on THAT-2.

4. Connect your audio equipment to the line input and
output jacks on THAT-2.

Not for use with telephones that have a keypad in the
handset.

Handset w/
modular plug

Telephone line
to wall jack

Audio equipment or
powered speakers or
computer Mic input

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Operation

The supplied adapter cable allows you to take the left
channel from a 1/8" stereo headphone or mono
microphone jack and attach it to the RCA jack on THAT-2.

Handset Type Switch
The three position switch on the front of THAT-2 selects
the type of microphone that is in the handset of your
telephone. When you push the Line In button in, THAT-2
replaces the handset microphone signal with a circuit that
must match the characteristics of the handset
microphone.

The Handset Type switch can cover the main three
microphone types, but keep in mind that there is no
industry standard for microphone types or characteristics
and therefore we cannot guarantee a perfect match with
every telephone. There is no way to tell which type of mic
is in your telephone handset. Sim ply use the position that
sounds best without clipping or sign al br ea k-up.

Switch Position Handset Microphone Type
A Electret
B Dynamic
C Carbon

Note: Not all telephones are built alike so we cannot

guarantee THAT-2 will work with every handset
design available. We designed the interface to
work with most popular designs.

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