JK Audio BluePack User Manual

BluePack

Wireless interview tool

User Guide

JK Audio

™

Welcome

Thank You

Thank you for purchasing the
JK Audio BluePack. Please read this
guide for instructions on using it.

Getting Assistance

If you have technical or application
questions:

In the US & Canada, call us toll free
at: 800-552-8346

All other countries dial: 815-786-2929
(M-F 8:30-5:00pm Central Time Zone)

Email us at: [e-mail]

Or, check out our FAQ section for
answers to common questions.

BluePack Wireless Interview Tool

ii

Limited Warranty

BluePack 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.

Safety Precautions

Use Caution to Prevent
Hearing Loss

BluePack contains a headphone

amplier that is more powerful than

the typical consumer product.

JK Audio products are designed for
the broadcast industry. The broadcast
professional must be able to hear
headphone signals over the ambient
noise level. From the cheering crowd
at a football game to trackside at a
car race, the program material or cues
must be heard at high volumes without
distortion.

Road Safety

Never use headphones while driving
or cycling, etc. It can be dangerous
to turn up the volume even while
walking. Doing so may hinder your
hearing and can be hazardous on the
roadways or at pedestrian crossings.

Note: While BluePack was designed
to be very rugged and durable, it is not
waterproof and care should be taken to
keep the unit dry.

Overview

iii

Overview vi

Applications 1

Controls & Indicators 2

Getting Connected 4

Bluetooth Wireless Technology

6 Bluetooth Status LED
7

Pairing

8 Master or Headset Mode
9 Switching between Master/Headset Mode, Master Mode Streaming

10 Connection History, Disconnecting from a Device, Reconnecting to a Device

FAQs 11

Technical Information 14

BluePack Wireless Interview Tool

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6

Features

Contents

HD Voice*

Bluetooth Wireless Technology

XLR Mic Input

* HD Voice. While standard phone calls have a narrow bandwidth of 300 Hz to 3.4 kHz, HD

Voice calls offer 50 Hz to 7 kHz bandwidth. The additional 1.5 octaves on the low end gives
voice a more natural sound, while the additional upper octave dramatically improves speech
clarity and intelligibility.

Wireless HD Calls. To take advantage of this extended bandwidth, both phones on the call
must support HD Voice, and both phones must be on the same carrier, in coverage areas

that support HD Voice.

7 kHz

3.5 Mm Stereo Line Input and Output

¼" Stereo Headphone Jack

>10 Hours on one 9 Volt Alkaline Battery

Contents

v

Overview

Introducing BluePack

JK Audio combines professional audio electronics with a exible communications

interface in a rugged new belt pack design. BluePack™ offers a professional look

and feel to eld reporters and live remote talent.

BluePack™ allows you to perform live man-on-the-street interviews through your
cell phone in HD Voice. BluePack also provides two-way IFB connections through

a cell phone or notebook for truly exible remote monitoring.

HD Voice is available on many third party headsets and cell phones. Interview in
7 kHz audio bandwidth for rich,natural voice clarity.

Connect to cell phones and notebooks through Bluetooth Wireless Technology.

This professional microphone preamp and powerful headphone amplier provide

a vast improvement in sound quality. A 3.5 mm stereo line input jack allows
recordings to be mixed into the broadcast. The 3.5 mm stereo line output jack
provides your full bandwidth microphone signal on the left channel and the return
audio on the right channel.

The stereo headphone output gives you a mix of the XLR microphone input,

3.5 mm input, and return audio. This powerful stereo headphone amplier will cut

through any crowd noise.

BluePack Wireless Interview Tool

vi

Applications

Live Man-On-the-Street
Broadcasts

Connect your microphone and
headphones to the BluePack, then
establish a Bluetooth connection
to your wireless phone. Dial up the
studio and you are ready to go.
Add prerecorded sound clips or
background music to your interviews
through the Aux Send input.

Telephone Interviews

Call out and interview other people
as part of your pre-game show.
Connect your mic and headphones
as shown and send audio through
the line output to your laptop for live
streaming or to your portable recorder
for later broadcast.

Mic Pre-Amp

Connect your dynamic microphone
to the XLR jack and connect the
line level 3.5 mm output to your
other audio equipment. Use the
thumbwheel on the top of the
BluePack to set the volume level for
the mic input.

BluePack in Master Mode

Congure the BluePack in Master

mode, pair it with a Bluetooth enabled
stereo headset and send stereo audio
to the headset. Tap the <MFB> to
switch to Hands Free mode and have
a full-duplex conversation.

Applications

1

Controls & Indicators

1 2 3 64 5 7

98

1) Mic Control

Controls the level of your microphone
input.

BluePack Wireless Interview Tool

2

2) Peak Indicator

The peak LED indicates clipping
on the input channel if the level is
set too high. The microphone and
Aux Send are a combined input. If

you see this red LED ashing, you

should decrease the <Mic> and/or
<Aux Send> input levels.

Controls & Indicators

3) Aux Send Control

Adjusts the level of audio from the

3.5 mm Aux Send input jack.

4) Stereo LED (Listen-Only)

The <st> LED ashes Red when the
BluePack has a stereo listen-only
(Headset) audio connection with your
Bluetooth device.

When you receive an incoming phone
call, the stereo LED will turn off.

This LED will ash Green when the
unit is in Master mode, sourcing
stereo A2DP audio to a Bluetooth
enabled headset device

5) Bluetooth LED

See section on Bluetooth Wireless
Technology.

6) Headphones Control

Sets the level of audio sent to the
headphone output jack.

7) Power Indicator

LED indicates when the power is
turned on and dims when the battery
charge is getting low.

8) Multi-Function Button (MFB)

Establish a connection with your
Bluetooth enabled cell phone, laptop
or other device.

9) Power Button

Press to activate the unit. Press again
to turn the unit off.

Controls & Indicators

3

Getting Connected

21 3 4

1) Headphones

Connect your headphones to this 1/4”
jack. The stereo headphone output
gives you a mix of the XLR mic input,

3.5 mm Aux Send input and the
Headset Interface audio.

BluePack Wireless Interview Tool

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2) Stereo Line Level Output

The unbalanced 3.5 mm stereo xed

line level output jack provides your full
bandwidth microphone signal on the
left channel and the Bluetooth audio
on the right channel.

Getting Connected

This stereo output jack allows you to
make a full bandwidth recording using
your favorite recorder for transfer back
at the station or over the web.

3) Stereo Line Level Aux In

Connect the output of your other audio
equipment to this unbalanced stereo

3.5mm Aux In jack. This enables you
to add background music or sound
clips to your remote broadcast.
This audio is not present at the
Stereo Output but will be sent to the
Headphone jack.

4) Mic Input

Connect your dynamic microphone
to the XLR jack. This device will
not provide phantom power for a
condenser type microphone.

You can use both the balanced
XLR and unbalanced 3.5 mm inputs
simultaneously. The line level Aux In
jack allows recordings to be mixed into
the broadcast with your microphone
to be sent out through the Bluetooth
connection.

Getting Connected

5

Bluetooth Wireless Technology

Bluetooth Status LED

The blue LED on the front of the unit ashes in different sequences to indicate

the current connection status. When attempting to put the unit into Idle or
Pairing mode, you should power the unit off then back on before pressing
the <MFB>. If you put the unit into the wrong state due to releasing the <MFB>

at the wrong time, holding the <MFB> for "X" seconds will not put it into the
desired mode.

Pairing Mode

In Pairing Mode, any Bluetooth
wireless technlogy enabled device
within range can pair with your
BluePack. To put the unit in Pairing
Mode, press the blue <MFB> for 6
seconds while the unit is on. The

blue LED will ash rapidly at a rate

of 100ms off, 100ms on. Once
the pairing process is complete
the unique device ID is stored in
Connection History. Subsequent
connections can be made
automatically from Idle Mode.

BluePack Wireless Interview Tool

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Idle Mode

In Idle Mode, BluePack searches for
paired devices. To put the unit in Idle
Mode, press the blue <MFB> for 4
secs when the unit is on. The blue

LED will ash at a rate of 2 secs off,
200ms on.

Connected Mode

After bonding is complete, the blue

LED will ash at a slower rate of

2 secs off, 1 sec on (2 secs off,
4 secs on for HD Voice). The

connection to that device is secure.

Bluetooth Wireless Technology

Pairing to a Cell Phone
with Bluetooth Wireless
Technology

When you're rst connecting to a

new device, you should be in an
environment with no other Bluetooth
wireless technology enabled devices
within range that might also be in
Pairing Mode.

1. Turn the BluePack on, then hold
the blue <MFB> button for 6 full
seconds. After you release the
<MFB> button, the blue LED should

ash rapidly if BluePack is in Pairing
Mode.

2. On your device, nd and select

the option to set up a connection.
When the cell phone has found the
new device, select from the list the
device ID of "JKBPxxxx" where:
xxxx = last four digits of the serial
number.

3. If asked for a pin, enter "0000".

4. When bonding is complete, the blue
LED will ash at a rate of 2 secs

off, 1 sec on. (2 secs off, 4 secs
on for HD Voice) Once BluePack

has been added to your cell phone,
subsequent connections can be
made more quickly from Idle Mode.

When Should I Release the MFB Button?

Idle Mode Pairing Mode Role Change Clear

seconds

Bluetooth Wireless Technology

Bluetooth LED

7

Bluetooth Wireless Technology

Master or Headset Mode

In the Bluetooth world, a Master
device, such as a wireless phone,
computer, or music player, is
connected to a Headset device. The
Master device controls the connection,
and also has the ability to stream
stereo A2DP audio to the Headset
device. A2DP music streaming is a
one-way path from Master to Headset.
BluePack can act as either a Master
or Headset. Please note that wireless
phones typically cannot receive A2DP
stereo music streaming.

BluePack will rst attempt to connect
using the Hands-Free prole, allowing

3.4 kHz (7 kHz if HD Voice is available
on your phone) telecom bandwidth
for a mono full-duplex connection. If

the Hands-free prole is not available,

BluePack Wireless Interview Tool

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BluePack will attempt to connect in
A2DP stereo streaming mode.

What is the Difference

between Proles?

A2DP (Advanced Audio

Distribution Prole):
Used for stereo music streaming.

Headset: Facilitates mono,
full-duplex audio between two
paired devices.

Hands-Free: Similar to Headset

prole, but allows the receiving

device more control over the call,
such as volume, accept/reject/end
a call.

Bluetooth Wireless Technology

Switching between Master and
Headset Modes

To switch between Master and
Headset mode, you must start from
the Bluetooth power-off state. Power
off the unit, then back on again. Hold
the <MFB> down for 11 seconds then
release. The ST LED on the top of the
BluePack will ash Green when the
device is in Master mode. The ST LED
will ash Red when it is in Headset
mode. The <st> LED only indicates
whether the BluePack is in Master or
Headset Mode on Startup and when
the Master/Headset role is switched.
The timing of the LEDs while pairing
with another device should remain the
same for either state.

Master Mode Streaming State

Simply tap the <MFB> button to toggle
between stereo A2DP and mono

Hands-Free proles. This can only be

done while the unit is in Master mode.

During A2DP streaming, the
<st> LED will be lit Green.

The <st> LED will not be lit when the

Hands-Free prole is in use.

Bluetooth Wireless Technology

9

Bluetooth Wireless Technology

Disconnecting from a device
with Bluetooth Wireless
Technology

To disconnect from the Bluetooth
device, simply press the <MFB> and
hold for 5 seconds or simply power
the unit off.

When a Bluetooth connection is
dropped or terminated, BluePack
returns to Idle Mode. If the unit
is in Idle Mode for >2 minutes
without a connection, Bluetooth will
automatically shut off. You may restart
Bluetooth by pressing the <MFB> for
2 seconds.

BluePack Wireless Interview Tool

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Connection History

BluePack retains a history of the
16 most recent devices. To clear
the connection history and return
to factory reset, hold the <MFB>
button in for at least 20 seconds.
After resetting, BluePack will return to
Pairing mode.

Reconnecting to a Device

When reconnecting to a device that is
still in BluePack's pairing history, the
device that will be in Headset mode

should be powered up rst. Then

when the Master device is turned on, it

will nd the Headset device during its

power up cycle.

FAQs

What is the range of the
Bluetooth transmitter/
receiver?

BluePack will transmit and receive
audio signals up to 65 feet from your
Bluetooth device. The maximum
range of this product is achieved when
a clear line of sight is maintained
between connected devices, but may
also be limited by interference due to
the environment. While this product
offers extended range capabilities,
maximum usable range is limited
by the weaker of the two paired/
connected devices. Transmitting
signals over longer distances will
require more power, therefore you
should keep BluePack as close as
possible to your Bluetooth device to
conserve battery power.

Can I pair my BluePack to
two cell phones and send
my audio to two locations
simultaneously?

No, your BluePack can only connect
to one Bluetooth enabled device at
a time. Paired devices remain in the
history for easy connection later.

How long will the battery last?

Based on our tests using a standard
alkaline battery, the battery should
last for >10 hours under normal use.

Lithium batteries can signicantly

increase the battery life, but at a
higher cost. As an indicator of low
battery, the red power LED will grow
dim and then extinguish a short
while before the battery is completely
exhausted and the unit shuts down.

FAQs

11

FAQs

Can I use my Bluetooth
headset with my cell phone
while I have my phone
connected to the BluePack?

No, your cell phone can only be
connected to one Bluetooth enabled
device at a time. In the standard
mode of operation, your cell phone
will be connected to our device as
if the BluePack were a headset.
So you need to use a microphone
and headphones connected to the
BluePack.

BluePack Wireless Interview Tool

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If I have an audio source
connected to the Aux In jack,
will that audio also be present
at the Output mini jack?

No, the stereo mini jack output only
contains audio from the <Mic> input
and the connected Bluetooth device.
This input would be a good place to
add background music or sound clips
during a live interview that is being
sent to your broadcast studio via the
Headset Interface.

Can I send and receive audio
at the same time?

Yes, you can have full duplex
conversations. The stereo line output
contains your microphone audio
on the Left channel and audio from
the Bluetooth device is on the Right
channel.

FAQs

Why is the peak LED still red
after I turned down the mic
volume level?

The microphone and Aux Send are
a combined input. If you see this red

LED ashing, you should decrease

the <Mic> and/or <Aux Send> input
levels until the combined input is no
longer clipping.

My BluePack won’t pair with
my cell phone. Why won’t it

accept the PIN?

If this is the rst time you have paired

the BluePack with this cell phone,
make certain you are in Pairing Mode
and not Idle Mode. You must hold
the <MFB> in for approximately 6
seconds to reach Pairing Mode the

rst time you connect.

Can I have full duplex stereo
conversations if my stereo
headset uses A2DP?

No, the A2DP prole is only used for

stereo music streaming. Full duplex
conversations will be in mono.

FAQs

13

Technical Information

Specications

Input Impedance / Level

Female XLR Mic: 2k ohms / -34 dBu nom.

1/8” (3.5mm) Stereo Line: 20k ohms / -10 dBu nom.

Output

1/8” (3.5mm) Stereo: 100 ohms / -10 dBu nom.

Headphone 1/4” Stereo: 8 ohms / ½ watt per channel

Bluetooth (3.0)

Distance: 65 feet (20 meters)

Frequency Response:

MISC

Power: 9 VDC Battery

Size: 4.7” x 3.75” x 1.65” (12 x 9.5 x 4.2 cm)

Weight: 10 oz (275 g)

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Hands-Free (phone): 300 Hz - 3.4 kHz
Hands-Free (HD Voice): 50 Hz -7 kHz
A2DP Mode: 30Hz - 17 kHz

Block Diagram

Block Diagram

15

Declaration of Conformity

Manufacturer’s Name:

Manufacturer’s Address:

Declares that the product:

Product Name:

Model Numbers:

Conforms to the following Product Specications:

ESD:

Emissions:

Bluetooth Radio:

BluePack Wireless Interview Tool

16

JK Audio, Inc.

1311 E 6
Sandwich, Illinois 60548 USA

BluePack™ Wireless Interview Tool

BluePack

ESD: EN 61000-3-2, 3-3, 4-3, 4-4, 4-5, 4-6, 4-11
EN 301 489-17 V1.2.1

EN 55022:1998, +A, 2000+A3, 2003 Class B
ETSI EN 300.328 V1.6.1: 2000
FCC Part 15, Subpart B

EN 300.328
FCC Part 15.247
FCC ID QOQWT32AE
IC 5132A-BGTWT32AE

th

Street

FCC Compliance Notice

The product herewith complies with the requirements of the following Directives and
carries the CE marking accordingly:

R&TTE Directive 1999/5/EC
EMC Directive 89/336/EEC, 92/31/EEC, 93/68/EEC
RoHS Directive 2002/95/EC

The Technical File containing supporting documentation is maintained at:

JK Audio, Inc (Corporate Headquarters)
Compliance Manager
1311 E 6th Street
Sandwich, Illinois 60548 USA
815-786-2929 phone
815-786-8502 fax

FCC Part 15 Compliance

This equipment has been tested and found
to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable
protection against harmful interference when
the equipment is operated in a commercial
environment. This equipment generates, uses,
and can radiate radio frequency energy and,
if not installed and used in accordance with

the instruction manual, may cause harmful
interference to radio communications.
Operation of this equipment in a residential
area is likely to cause harmful interference in
which case the user will be required to correct
the interference at his own expense. Changes

or modications not expressly approved by JK

Audio can void the user's authority to operate
the equipment.

FCC Compliance Notice

17

BluePack

™

Wireless Interview Tool

User Guide Version 7/29/14

JK Audio, Inc.
1311 E 6th St.
Sandwich, IL 60548
United States
Telephone: [phone]
Toll Free: 1.800.jkaudio
Fax: [phone]
www.jkaudio.com

© 2014 JK Audio, Inc. All rights reserved.
The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks
by JK Audio, Inc. is under license.

JK Audio