JK Audio
User Guide
Outerloop 3.5™
Universal Intercom Belt Pack
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Outerloop 3.5™ Wireless Intercom Beltpack
Welcome
Thank You
Thank you for purchasing the JK Audio Outerloop 3.5.
Please read this guide for instructions on using it.
Getting Assistance
If you have technical or application questions,
call us M-F: 8:30am-5:00pm (CT)
In the US & Canada (Toll-Free)
800-552-8346
All other countries:
815-786-2929
Email us at:
support@jkaudio.com
Or check out our FAQ section for answers to common questions.
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Warranty
Warranty
Limited Warranty
Outerloop 3.5 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 modications, or damages
occurred in shipping, only defective
workmanship or materials.
There are no expressed or implied
warranties which extend beyond the
warranty here made.
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Outerloop 3.5™ Wireless Intercom Beltpack
Safety Precautions
Use Caution to Prevent Hearing Loss
Outerloop 3.5 contains a headphone amplier 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.
Handle with Care
While Outerloop 3.5 was designed to be very rugged and durable,
it is not waterproof and care should be taken to keep the unit dry.
Technical InformationTechnical Information
v
Overview
Overview 1
Controls & Indicators 2
Getting Connected 4
Technical Information 6
FAQs 8
Contents
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Outerloop 3.5™ Wireless Intercom Beltpack
Overview
HD Voice (Wide-Band Speech)*
Connects to Phones and
Notebooks with 4-conductor
3.5mm Headset Interface
Uses Standard 4-Pin and 5-Pin Male
or Female Intercom Headset Jacks
Send and Receive Volume Controls
Push-On, Push-O Talk Button
Recessed Sidetone Level Control
>20 Hours on one 9 Volt Alkaline Battery
Features
* HD Voice. While standard phone calls have a narrow bandwidth of 300 Hz to 3.4 kHz, HD
Voice calls oer 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.
1
Overview
Overview
Introducing Outerloop 3.5
Outerloop 3.5™ provides a wireless link to your intercom system. This
universal belt pack provides XLR connections for your existing 4-pin or 5-pin
intercom headset, routing audio through a wired connection to your mobile
device. Use your mobile device to call into your intercom phone bridge, station
phone coupler, or any phone-based intercom app such as Unity Intercom or
Clear-Com® Agent-IC.
Outerloop 3.5 includes a Headset Interface cable (CN150) that plugs into the
3.5mm TRRS headset/earbud jack of your mobile device, providing two-way
communications. Separate Send and Receive level controls, a push-on, push-o
Talk button, as well as a recessed sidetone level control let you adapt to any
situation whether you are around the corner or around the world.
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Outerloop 3.5™ Wireless Intercom Beltpack
Controls & Indicators
1
6 7
2 3 4 5
3
Overview
5. Power Indicator
LED indicates when the power
is turned on and dims when the
battery charge is getting low.
6. Push-to-Talk Button (PTT)
7. Power Button
The <Power> button applies
power to the belt pack and
immediately starts the Bluetooth
radio in Idle mode.
Controls & Indicators
1. Send Level
Controls the level of your
microphone input.
2. Peak LED
The peak LED indicates clipping
on the input channel if the level
is set too high. If you see this red
LED ashing, you should decrease
the Send input level.
3. Talk LED
Lit green when mic is enabled.
4. Receive Level
Sets the level of audio sent to
the headphone output jack.
If you nd the maximum volume
on the Outerloop 3.5 too loud or
too quiet, the volume can also be
adjusted on the cell phone itself
using the volume up/down buttons.
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Outerloop 3.5™ Wireless Intercom Beltpack
Getting Connected
1 2
5
Overview
Getting Connected
Sidetone Null
A screwdriver slot on the side of the
unit adjusts the amount of Sidetone
(your voice coming back to you in your
headset). This adjustment is made
while speaking into the headset with
the <Talk> button engaged. Simply
insert a small at blade screwdriver
and adjust the trim pot to set the
desired sidetone level.
1. Headset Interface
Connect the Headset Interface
jack to the headset jack on your
wireless phone using the supplied
3.5mm TRRS to 3.5mm TRRS
headset interface cable (CN150).
2. Headset Jack
Connect your existing headset to
the corresponding jack.
OTL3.5-F features 4-pin or 5-pin
Female XLR headset jacks.
OTL3.5-M features 4-pin or 5-pin
Male XLR headset jacks.
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Outerloop 3.5™ Wireless Intercom Beltpack
Specications
Headset Microphone
Impedance: 50-2000
ohms
Headset Earpiece
Load Impedence: 50-600
ohms
Power: >
50 mW into 150 ohms
Headset Pinout 4-pin Male or Female 5-pin Male or Female
Pin 1: Mic - Mic -
Pin 2: Mic + Mic +
Pin 3: Headphone - Headphone Pin 4: Headphone + Headphone B +
Pin 5: N/A Headphone A +
Technical Information
7
Technical Information
Technical Information
3.5mm Headset Interface Pinout
Tip: Headphone Left +
Ring 1: Headphone Right +
Ring 2: Ground
Sleeve: Mic
Misc.
Power: 9
VDC battery
Size: 4.7” x 3.75” x 1.65” (12 x 9.5 x 4.2 cm)
Weight: 10 ounces (275 grams)
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Outerloop 3.5™ Wireless Intercom Beltpack
FAQs
How long will the battery last?
Based on our tests using a standard
alkaline battery, the battery should last
for >10 hours. Lithium batteries can
signicantly 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.
Is Outerloop 3.5 compatible
with smart phones that no
longer oer a 3.5mm TRRS
headset jack?
Yes, provided that you have the
appropriate 3.5mm TRRS headphone
jack adapter designed for use with
your phone's charging port, which is
not supplied by JK Audio.
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Declaration of Conformity
Manufacturer’s Name
Manufacturer’s Address
JK Audio, Inc.
1311 E 6
th
Street
Sandwich, Illinois 60548 USA
Declares that the product:
Product Name
Model Numbers
Outerloop 3.5™ Universal Intercom Belt Pack
OTL3.5-F, OTL3.5-M
The product herewith complies with the requirements of the following Directives and
carries the CE marking accordingly:
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
JK Audio
JK Audio, Inc.
1311 E 6th St.
Sandwich, IL 60548
United States
Telephone: 815.786.2929
Toll Free: 1.800.jkaudio
Fax: 815.786.8502
www.jkaudio.com
© 2018 JK Audio, Inc. All rights reserved.
Outerloop 3.5™
Universal Intercom Belt Pack
User Guide Version 5/1/18
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