JK Audio Voice Path User manual

JK Audio
Voice Path™
Telephone Handset Audio Tap
User Guide

ii Voice Path Telephone Handset Audio Tap
Welcome
Thank You
Thank you for purchasing the
JK Audio Voice Path. Please read
this guide for instructions on setting
up and using your new product.
Getting Assistance
If you have any questions,
call us M-F: 8:30am-5:00pm (CT)
In the US & Canada (Toll-Free)
800-552-8346
All other countries dial:
815-786-2929
Email us at:
[email protected]
Or, check out our FAQ section
for answers to common questions.
Limited Warranty
Voice Path is covered by a 2 year
warranty to be free from defective
workmanship and materials. To obtain
service, contact JK Audio by phone
or email for return authorization.
Once authorized, you will carefully
pack and ship the faulty product and
all accessories to us. You will pay
for shipping to us and we will pay for
return back to you.
This warranty does not cover damages
due to accident, weather, re, ood,
earthquake, misuse, unauthorized
repairs or modications, or damages
occurred in shipping, only defective
workmanship or materials.
There are no expressed or implied
warranties which extend beyond
the warranty here made.

Contents iii
Overview 1
Setup 3
Operation 4
FAQs 6
Technical Information 8
Contents
Note: While Voice Path was designed to be very rugged and durable, it is not waterproof
and care should be taken to keep the unit dry.

iv Voice Path Telephone Handset Audio Tap
Works withAnalog, Digital, PBX, and VoIP Telephones
1/8" (3.5mm) Mono Audio Input
1/8" (3.5mm) Mono Audio Output
Output Level Control
Switch Selects Between Carbon, Dynamic or Electret Handset Types
Passive Design. No Battery or AC Required
In the Box
18" Flat Handset Jumper Cable
Features

Overview 1
Introducing Voice Path
Voice Path continuously routes both
sides of your conversation to the mic
input of your PC (or Mac) sound card.
Simply press in the gray button when
you are ready to play audio recordings
back into the phone line. With the
button in, Voice Path will disconnect
the microphone from your handset
and send audio down the phone line
and into your receiver. You will hear
the transmit audio as well as the voice
from the other end of the call.
Input to Phone
The cable marked <To Phone>
accepts a line level signal from your
computer sound card to send down
the telephone line. This can be audio
streaming from the internet, CD audio,
a conversation previously recorded
from the Voice Path, or any other
audio that would normally play through
your computer speakers.
Output to PC
The cable marked <From Phone>
sends a mic level signal to your
computer sound card’s mic input.
This signal will contain a mix of your
voice (or other audio sent down the
phone line) and the audio from the
other end 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.
Overview

2Voice Path Telephone Handset Audio Tap
Overview
Computer

Setup 3
Setup
Getting Connected
Voice Path connects between the handset and the base of your telephone. Follow
these simple steps:
1. Unplug the modular handset cord from your telephone base.
2. Using the black handset jumper cord that we have provided, connect
the <Phone> jack of Voice Path to the handset jack on the base of
your telephone.
3. Plug your handset cord, and handset (or headset), into the <Handset> jack on
Voice Path.
4. Connect the <From Phone> cable to the mic input on your computer.
5. Connect the <To Phone> cable to the line output on your computer.
Note: Not for use with telephones that have a keypad in the handset.

4Voice Path Telephone Handset Audio Tap
Operation
Note: Not all telephones are built alike so
we cannot guarantee Voice Path will work
with every handset design available. We
designed the interface to work with most
popular designs.
Handset Type Switch
The three position switch on the
back of Voice Path selects the type
of microphone that is in the handset
of your telephone. When you push in
the Record/Play button, Voice Path
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. Simply use
the position that sounds best without
clipping or signal break-up.
A B C
Electret Dynamic Carbon

Operation 5
Operation
Record/Playback Button
The Record/Playback button selects
which signal will be sent down the
phone line; the handset microphone,
or the <To Phone> cable.
Recording (Position: Out)
1. Make certain the Record / Playback
button is in the Out position.
2. Then start your recording from your
software controls.
3. The level of the audio sent into
your PC can be adjusted from the
back of the unit. Place a small
screwdriver into the hole marked
To PC Vol. and turn…
Clockwise: Raise Level
Counter-clockwise: Lower Level
This is a passive unit so the signal
can not be raised above mic level.
Play (Position: In)
1. Make certain the Record/Playback
button is in the In position.
2. Start the audio playing on your
computer.
3. Select the appropriate position on
the Handset Type switch.
4. The audio playing on your computer
will be sent down the telephone line
to the other end of the call and to
the handset earpiece. The handset
microphone is disconnected while
Voice Path is in the Play position.

6
The headset I am currently
using goes through an
amplier before it connects to
my telephone. Will the Voice
Path work with this headset?
If the amplier was designed to
connect to any telephone's handset
jack then yes. The Voice Path goes
between the amplier and your
telephone base. Simply connect the
Voice Path modular jack marked
<Phone> to the handset jack of your
telephone base and the Voice Path
modular jack marked <Handset>
to the amplier's modular jack (that
usually connects to the telephone
handset jack). Leave your headset
connected to the amplier as usual
and it should work ne.
FAQs
Can I still use my computer
speakers when the Voice Path
is connected?
Yes. You will need a Y-adapter for
your sound card line output. This
adapter should have 1 stereo mini
plug (male) that splits into 2 stereo
mini jacks (female). Plug the adapter
into your sound card line output, plug
your computer speakers into one
of the adapter's mini jacks and the
Voice Path "input from PC" cable into
the other.
When playing back the
recorded conversation, I can
only hear the Caller's voice.
Why can't I hear my voice?
Voice Path relies on the audio
provided by your telephone's handset
jack. Some telephones do not
Voice Path Telephone Handset Audio Tap

FAQs 7
provide audio from both sides of your
conversation, only the far side. If your
telephone is designed to only provide
caller audio in the handset, you will
have to try another telephone.
I have a Voice Path connected
between my telephone and
computer. I can record
conversations to my sound
card but cannot send audio
(from the PC) down the phone
line. What should I do?
1. Connect the cable marked <To
Phone> on Voice Path to the line
output or speaker output of your
sound card. This is usually where
you connect your PC speakers.
2. Make sure your computer volume
(software) is at an acceptable level.
3. Complete a call to a friend who can
listen and evaluate the signal. You
will be able to hear their comments
during the call.
4. Set the gray pushbutton on the
Voice Path to the in position. This
disables the handset microphone
and enables the audio input.
5. Play an audio le on your computer.
It should be long enough to
complete this test (or select "loop
playback" from your software).
6. Next, switch between the 3 handset
type positions on the Handset Type
switch on the back of the Voice
Path. Select the position with the
best audio quality (best does not
necessarily mean loudest!). Then
adjust the sound card output level
using your software.
FAQs

Isolation
Transformer
Output
Level
3.5 mm
Mono Plug
Output to PC
Handset Jack
from Handset Handset Jack
to Phone
Handset Mic Type Switch
Isolation Transformer
Signal Limiter
3.5 mm
Stereo Plug
Input from PC
Block Diagram
8Voice Path Telephone Handset Audio Tap

Technical Information 9
Line Input
3.5 mm TRS (Left Channel Only)
(48" cable) 10k ohms / 250 mV nominal
Output
3.5 mm TS (Mono)
(48" cable) 2800 ohms 100 mV max
Misc.
Isolation: 1500 VAC
Handset Jack: RJ-22
Handset Type: Electret, Dynamic, Carbon
Size: 3" x 1" x 2" (7.6 x 2.5 x 5.1 cm)
Weight: 9 oz
Specications
Technical Information

10 Voice Path Telephone Handset Audio Tap 1010
Your new JK Audio product has been
registered with the Federal Communications
Commission (FCC). This product complies
with the standards in Part 68 of the FCC rules.
1. Connection And Use With The
Nationwide Telephone Network
The FCC requires that you connect this
telephone equipment to the national
telephone network through a USOC RJ-11C
modular telephone jack. This equipment
may not be used with Party Line Service or
Coin Telephone Lines. This equipment is
hearing aid compatible.
2. Information For The Telephone Company
Upon request from your local telephone
company, you are required to provide the
following information:
a. The "line" to which you will connect
the telephone equipment (that is, your
telephone number), and
b. The telephone equipment's FCC
registration number. This can be
found on the bottom of your telephone
equipment.
FCC Registration

FCC Registration 111111
3. Repair Instructions
If it is determined that your telephone
equipment is malfunctioning, the FCC
requires that it not be used and that it be
unplugged from the modular outlet until
the problem has been corrected. Repairs
to this telephone equipment can only be
made by the manufacturer or its authorized
agents or by others who may be authorized
by the FCC. For repair procedures, follow
the instructions outlined under the warranty
section of the manual.
4. Rights Of The Telephone Company
If telephone equipment is causing harm to
the network, the telephone company may
temporarily discontinue your telephone
service. If possible, they'll notify you before
they interrupt service. If advanced notice
isn't practical, you'll be notied as soon as
possible. You'll be given the opportunity
to correct the problem, and you'll be
informed of your right to le a complaint
with the FCC. Your telephone company may
make changes in its facilities, equipment,
operations or procedures that could a󰀨ect
the proper functioning of your JK Audio
product. If such changes are planned, you'll
be notied by your telephone company.
FCC Registration

JK Audio
JK Audio, Inc.
1311 E 6th St.
Sandwich, IL 60548
United States
Telephone: [phone]
Toll Free: 1.800.jkaudio
Fax: [phone]
www.jkaudio.com
© 2019 JK Audio, Inc. All rights reserved.
Voice Path™
Telephone Handset Audio Tap
User Guide Version 3/5/19