JK Audio BlueKeeper User manual

JK Audio
User Guide
BlueKeeper™
Wireless Audio Gateway

ii BlueKeeper™ Wireless Audio Gateway
Thank You
Thank you for purchasing a JK Audio BlueKeeper Wireless Audio Gateway.
Please read this guide for instructions on setting up and using your
new product.
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: [email protected].
Or, check out our FAQ section for answers to common questions.
Limited Warranty
The BlueKeeper is covered by a 2 year warranty to be free from defective work-
manship 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.
Welcome

Contents
Overview 1
Getting to know your BlueKeeper
2Controls & Indicators
4Inputs & Outputs
2
Getting Connected 6
Bluetooth Wireless Technology 8
FAQs 10
Technical Information 12
Contents iii
Contents

iv BlueKeeper™ Wireless Audio Gateway
HD Voice (Wide-Band Speech)*
Bluetooth Wireless Technology
Send XLR Line Input
Mic/Line Switch
3.5mm Stereo Line Input
3.5mm Mono Line Input
Caller XLR Line Output
3.5mm Stereo Line Output
3.5mm Mono Mic Level Output
3.5 mm Stereo Headphone Jack
Send and Caller Signal Level LEDs
Send and Caller Volume Controls
Universal Power supply with
detachable cord
Features
In the Box
Features
7 kHz
* 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.

Overview 1
Introducing the BlueKeeper
JK Audio combines Bluetooth Wireless Technology with professional audio
electronics in a convenient desktop design. BlueKeeper pairs to your cell
phone like a Bluetooth wireless headset. Connect your favorite microphone and
headphones for dramatically improved sound quality at both ends of the call.
BlueKeeper also pairs to Bluetooth equipped sound cards and music players in
full bandwidth stereo A2DP mode.
BlueKeeper allows you to send mic and line level signals into your wireless
phone while maintaining excellent separation between your voice and the caller.
The stereo output jack provides your voice on one channel and only the caller’s
voice on the other channel. The balanced XLR output jack contains only the
caller’s voice.
The 3.5 mm stereo line input jack allows recordings to be sent into the Bluetooth
device. The 3.5 mm stereo line output jack provides your full bandwidth send
mix on the left channel and Bluetooth caller audio on the right channel. The
headphone output gives you a mix of the XLR input, 3.5 mm input, and Bluetooth
audio.
Ready to go?
The BlueKeeper controls and connectors are clearly marked and ready for
operation. If this is your rst exposure to a hybrid, we suggest that you read the
entire manual to allow you to take advantage of all these features.
Overview

2BlueKeeper™ Wireless Audio Gateway
Getting to Know Your BlueKeeper
3 4 5 6 71
8 9
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10 11
1. Call Button
Press this button to answer an incoming call or to connect your call through
the hybrid or redial the last number.
2. Drop Button
Press this button to drop (hang up) a call.
3. Send 1 Level
Adjusts the signal level that you are sending down the telephone line,
through the female XLR input.
4. Send 2 Level
Adjusts the signal level that you are sending down the telephone line,
through the 3.5mm mini jack input.
5. Caller Level
Adjusts the level of the incoming caller’s audio as it is going out the output
jacks.
6. Headphone Level
Adjusts the signal level coming from the 3.5mm front panel headphone jack.
7. Headphones
The 3.5mm stereo headphone jack contains a mix of both the Send input
audio and the Caller audio.
Controls & Indicators

Controls & Indicators 33
Getting to Know Your BlueKeeper
Indicators Cont’d
8. Blue LED
Indicates Bluetooth Status: lit steady when you are on line with a call or
ashes to show pairing status.
9. Send LEDs
Displays the signal level sent to the caller. The goal is to drive the phone
line audio at levels high enough to avoid phone line noise, but not so loud
as to cause excessive clipping. Adjust the <Send> level controls so that
you rarely see ashes of the red -3 dB peak Send LED. These ashes
should occur only during loud speech bursts. If the red LED stays lit for
extended periods you can assume that much of your speech is being
clipped or distorted. In this case you should lower the <Send> volume
control for the input that is causing the clipping.
The <Send 1> volume control will set the level of any audio connected
to the <Send 1> XLR jack on the back of the BlueKeeper. The <Send 2>
control will set the level of the <Send 2> mini jack on the back of the
BlueKeeper. These two inputs will be combined on the LED meter and on
the Left channel of the stereo output mini jack.
10. Power LED
Lit when unit is plugged in and receiving power.
11. Caller LEDs
Displays the signal level coming in from the cell phone, after the DSP.
This signal level will not change when you adjust the <Caller> knob.
The <Caller> level control knob does not change what you see on these
LEDs. Adjust the <Caller> level control to give you the best signal level
at the <Caller> XLR output or the right channel of the stereo output
mini jack.
You can listen to the combined audio level in your headphones. After
setting the Send levels for the highest level you can send without
distortion as indicated by the LED meter, listen to the audio in your
headphones and set the <Caller> level to match the Send level. Or if your
recording device has a meter, you can use that to match the <Caller>
level to the Send level.

4BlueKeeper™ Wireless Audio Gateway
Getting to Know Your BlueKeeper
Inputs & Outputs
1. Bluetooth Antenna
Do not obstruct.
2. Caller Output
Male balanced XLR output contains only the caller’s voice.
3. Send 1 Input
Female balanced XLR input for signals going out to the cell phone.
Mic or line level input.
4. Mic / Line switch
Sets the front end sensitivity of the Send 1 XLR jack. Set to <Mic> if you
intend to connect a dynamic microphone directly to the Send 1 jack. Set to
<Line> if you are connecting to the output of a mic mixer.
5. Send 2 Stereo Input
3.5 mm <Stereo In> mini jack for signals going into the cell phone.
Line level.
3 4 5 6 7 81 2

5
Inputs & Outputs Cont’d
6. Stereo Output
3.5 mm <Stereo Out> mini jack contains both Send and Caller audio
channels with levels determined by the <Send 1> and <Send 2> level
controls and the <Caller> level control. Left channel contains your local
Send audio and right channel contains the Caller’s audio from the cell
phone.
7. Mono Output
3.5 mm <Mono Out> mini jack contains a mix of <Send 1>, <Send 2>
and <Caller> audio with levels controlled by each of the input control
knobs on the front of the unit. This output is at Mic level and is suitable for
connecting to the Mic input on a computer or other recording device.
8. Power Jack
For connection only to the supplied 9VDC regulated power supply.
Inputs & Outputs 5
Getting to Know Your BlueKeeper

6BlueKeeper™ Wireless Audio Gateway
Setting Up
1. Connect a pair of headphones to the front of the BlueKeeper or mixer.
2. There are 2 ways to set up the audio equipment for your BlueKeeper:
A. One Mic/Headphone (No Mixer): See Figure 6a.
1. Connect a dynamic microphone cable to the <Send 1> jack on the
BlueKeeper. Be sure to set the BlueKeeper <Mic/Line> switch to
the <Mic> position.
2. Connect a stereo cable from the mini-jack <Stereo Out> on the
BlueKeeper to the <Line In> on your computer sound card or
other recording equipment that has a stereo input.
B. Two or more Inputs/Outputs (Mix-Minus Caller): See Figure 7a.
A mix-minus signal is an audio signal that contains a mix of your local
microphones plus any other audio, minus the Caller’s own voice.
Sending the Caller’s audio back to the BlueKeeper will cause an echo,
or feedback.
1. Connect <Caller> to any Line Level input on mixer.
2. Connect Aux (or FX) Send on mixer to <Send 1> on BlueKeeper.
Set the BlueKeeper <Mic/Line> switch to the <Line> position.
3. Connect the supplied DC power supply to the back of the BlueKeeper and
then to an AC power outlet.
Your BlueKeeper is now ready to take calls. You can establish a connection to
your mobile device with Bluetooth Wireless Technology (see pages 8-9) and
place or receive a call.
Place a test call to a quiet location. Set the <Send> level control so that while
you are speaking into the microphone, the Send LEDs on the hybrid light the -20
dB green LED consistently and ash the -9 dB green LED. If you ash the -3 dB
red LED, lower the level. Set the <Caller> control for good recording level of the
caller audio at the output jack.
Getting Connected
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7
Mix-Minus Caller
For whichever input channel you have the <Caller> connected to, turn the
corresponding <Aux> control to minimum. All other <Aux> controls should be set
for audio sent to the phone line. Each <Aux Send> bus is completely separate
from all other outputs, so these Aux controls will not affect what is heard on the
Main outputs or on any other Aux buses. We recommend using an <Aux Send>
bus that is pre-fader, so you can use the fader controls to set the levels of each
channel to the main output without affecting what is sent to the phone line. If
your mixer does not have an <Aux Send> bus, you can use <Pan> controls
with the Left and Right outputs. Pan all the microphones, etc. to the Left output
and pan the Caller to the Right output. Then connect only the <Left> output to
the BlueKeeper <Send 1>. Or, you may use an external Mix-Minus box that will
create this signal for you.
Getting Connected
Figure 7a

8BlueKeeper™ Wireless Audio Gateway
Pairing Mode
In Pairing Mode, any Bluetooth wireless technlogy enabled device within
range can pair with your BlueKeeper. To put the unit in Pairing Mode, press
the <Pair> button for 3seconds 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.
Idle Mode
In Idle Mode, BlueKeeper searches for paired devices. To put the unit in Idle
Mode, press the <Pair> button for less than 1 sec when the unit is on. The
blue LED will ash at a rate of 2 secs off, 200ms on. After 5 minutes in Idle
Mode, the Bluetooth module shuts down. The BlueKeeper can be put into
Idle mode again by pressing the <Pair> button.
Connected Mode
After bonding is complete, the blue LED will ash at a slower rate of 2secs
off, 1sec on.The connection to that device is secure.
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 (by
disconnecting and reconnecting the power cord) before pressing the
<Pair> button. If you put the unit into the wrong state due to releasing the
<Pair> button at the wrong time, holding the <Pair> button for "X" seconds will
not put it into the desired mode.
Bluetooth Wireless Technology
When Should I Release the Pair Button?
Idle Mode Pairing Mode Clear
Bluetooth LED
seconds
Bluetooth Proles
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.
BlueKeeper can act as either a Master or Headset. Please note that wireless
phones typically cannot receive A2DP stereo music streaming.
BlueKeeper will rst attempt to connect using the Hands-Free prole, allowing
3.4 kHz telecom bandwidth for a mono full-duplex connection. If the Hands-free
prole is not available, BlueKeeper will attempt to connect in A2DP stereo
streaming mode.

Bluetooth Wireless Technology 9
Pairing to a Cell Phone with Bluetooth Wireless Technology
When you are 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. Connect BlueKeeper to power, then hold the <Pair> button for 3full seconds.
After you release the <Pair> button, the blue LED should ash rapidly if
BlueKeeper 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
"JKBKxxxx" 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 2secs off, 1
sec on. Once BlueKeeper has been added to your cell phone, subsequent
connections can be made more quickly from Idle Mode.
Placing a call with BlueKeeper
1. To place an outgoing call, dial the number on your cell phone and the call will
be active on BlueKeeper. To redial the last number or answer an incoming call,
press the <Call> button.
2. When your call is completed, press the <Drop> button on BlueKeeper.
Disconnecting from a device with Bluetooth
Wireless Technology
To disconnect your cell phone, select the Drop function on your phone’s
Bluetooth menu, power off your phone or BlueKeeper, or take the cell phone out
of range.
Connection History
BlueKeeper retains a history of the 16 most recent devices. To clear the
connection history and return to factory reset, hold the <Drop> button in for at
least 12 seconds.
Note: If you do not hear your cell phone ring, you may need to check the
Bluetooth headset settings oon your phone. The phone may send a beep to
your headphone instead of ringing to indicate an incoming call.
Bluetooth Wireless Technology

10 BlueKeeper™ Wireless Audio Gateway
1. What is the range of the Bluetooth transmitter/receiver?
BlueKeeper will transmit and receive audio signals up to 33 feet (10 meters)
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.
2. Will the digital hybrid provide phantom power for a
condenser mic?
No, this device will not provide phantom power. If you connect a microphone
directly to the BlueKeeper, you should use a dynamic mic.
3. Why is there a Send 2 mini-jack on the back of my
BlueKeeper?
This is a second line level input to the BlueKeeper. Here you can connect
another device, such as a MP3 player or computer, to add audio to the
conversation. This enables you to play background music or other sound
bites during your discussion. Do not connect a microphone to this jack.
4. How do I record onto my computer and edit the les?
You will need to purchase or download any audio editing software of your
choice. You may also need to edit the audio conguration les on your
computer or in your software to allow recording in stereo. BlueKeeper just
enables you to access the audio from your cell phone or other connected
Bluetooth device.
5. Why does my laptop only record half of the conversation? I
am using the Stereo output on the BlueKeeper and I have a
stereo cable.
Most laptop computers only have a mic input, which is mono. If you want
to record 2 track stereo audio, you will need to either get a sound card with
a stereo line level input for your laptop or use a USB or FireWire interface
product. However, the BlueKeeper has a mono, mic level output that can be
connected directly to the mic input of your laptop. This will allow both sides
of the conversation to be recorded onto one mono track in your software.
6. There is a loud hum on the output of my BlueKeeper, even
when nothing else is connected. What else could it be?
Make certain you are using the regulated power supply that was shipped
with this unit. Power supplies are not all the same.
FAQs

FAQs 1111
7. Can I still use my phone to take regular calls or do I have to
disconnect the BlueKeeper when I am not using it?
If you would like to use your phone normally while it is connected to the
BlueKeeper, you will need to select “Handset” or “Speaker” from the
phone’s call menu instead of “Bluetooth”. This will allow you to have a
conversation on your phone without the audio being routed via Bluetooth to
the BlueKeeper.
8. Can I pair my BlueKeeper to two cell phones and send my
audio to two locations simultaneously?
No, a BlueKeeper can only be paired to one mobile device with Bluetooth
Wireless Technology at a time.
9. What is the difference between Mic Level and Line Level?
Mic level is typically 20-30 dB lower than Line level and needs a pre-amp
to bring it up to Line level. While many audio recording or playing devices
will have an 1/8” input, it is important for you to know what type of input it is.
Usually a mic input will be mono and will use a pre-amp circuit, and a line
input will be stereo.
Check your cable also to be sure it is compatible with the type of input/
output you are using. A stereo mini cable will have two black rings and a
mono cable will have one black ring on the plug. On many mixing consoles,
the XLR input will be mic level and the 1/4” TRS inputs will be line level.
10. My Bluetooth device has the latest Bluetooth version
(Bluetooth 4.0) but your product does not. Will there be a
compatibility problem?
No, the latest Bluetooth version is backwards compatible with older BT
versions.
FAQs

12 BlueKeeper™ Wireless Audio Gateway
Technical Information
Input Impedance / Level
Balanced Female XLR: 1k ohms / 15 mV RMS; -34 dBu nom.;
Mic/Line Pad Switch = +6 dBu max
1/8” (3.5mm) Stereo: 20k ohms / 250 mV RMS; -10 dBu nom.; +6 dBu max
Output
Balanced Male XLR: 200 ohms / 500 mV RMS; -4 dBu nom.;
+14 dBu max; Caller Only
1/8” (3.5mm) Mono: 50 ohms / 15 mV RMS; -34 dBu nom
Mixed Send and Caller
1/8” (3.5mm) Stereo: 50 ohms / 250 mV RMS; -10 dBu nom; +6 dBu max
Left = Send; Right = Caller
Headphone 1/8” Stereo: 8 ohms / ½ watt per channel
Mixed Send and Caller
Bluetooth Wireless Technology
Standard: Bluetooth 3.0
Range: 33 ft (10 meters)
Frequency Response:
Hands-Free = full duplex voice, 300 Hz– 3.4 kHz
Hands-Free (HD Voice) = full duplex voice, 50 Hz– 7 kHz
A2DP = 30 Hz– 17 kHz, master to slave
Misc.
Isolation: 1500 VAC
Power: 120-240 VAC Power Supply
Size: 7” x 6” x 1.6” (18 x 15 x 4.2 cm)
Weight: 2.2 lbs. (1kg)
Specications

13
Block Diagram 13
Technical Information
Block Diagram
JK Audio BlueKeeper Simplified Block Diagram January 12, 2009
XLR
Input
3.5 mm
Line Input
3.5 mm
Stereo Line
Output
Headphone
Bluetooth
L
R
L
R
Mic / Line
Caller
3.5 mm
Mono Mic
level Output
Send 1
Level
Send 2
Level
Headphone
Level
Caller
Level

14 BlueKeeper™ Wireless Audio Gateway
FCC Part 15 Subpart A 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/her 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

15
Declaration of Conformity 15
Manufacturer’s Name:
Manufacturer’s
Address:
JK Audio, Inc.
1311 E 6th Street
Sandwich, Illinois 60548 USA
Declares that the product:
Product Name:
Model Numbers:
BlueKeeper Wireless Audio Gateway
BlueKeeper
Conforms to the following Product Specications:
Safety:
ESD:
Emissions:
Bluetooth Radio:
CAN/CSA-C22.2 No. 60950-01-03
UL Standard 60950-01 1st edition
EN 61000-3-2, 3-3, 4-3, 4-4, 4-5, 4-6, 4-11
EN 301 489-17 V1.2.1
EN 55022:2006
AS/NZS CISPR 22: 2006
ETSI EN 300.328 V1.6.1: 2000
FCC Part 15, Subpart B
ICES-003
EN 300.328
FCC Part 15.247
FCC ID QOQWT32AE
IC 5132A-BGTWT32AE
The product herewith complies with the requirements of the following Directives and
carries the CE marking accordingly:
R&TTE 1999/5/EC
EMC 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
Declaration of Conformity
Declaration of Conformity

© 2015 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, Inc.
1311 E 6th St.
Sandwich, IL 60548
United States
Telephone: [phone]
Toll Free: 1.800.jkaudio
Fax: [phone]
www.jkaudio.com
BlueKeeper™
Wireless Audio Gateway
User Guide Version 6/10/15
JK Audio