JK Audio innkeeper LTD User manual

JK Audio
User Guide
innkeeper LTD™
Digital Hybrid

ii innkeeper LTD™ Digital Hybrid
Thank You
Thank you for purchasing a JK Audio innkeeper LTD Digital Hybrid. Please read
this guide for instructions on setting up and using your new product.
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:
[email protected]
Or check out our FAQ section for answers to common questions.
Warnings & Safety Precautions
• Read and keep these instructions.
• Follow all instructions.
• Clean only with a soft dry cloth.
• Refer all servicing to qualied service personnel.
• Heed all warnings.
Warning: Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including ampliers) that produce
heat.
Warning: Do not defeat the safety purpose of the three-prong grounding
type plug. If the provided plug does not t into your outlet, consult an
electrician for replacement of the obsolete outlet.
Warning: Do not use this unit if the electrical power cord is frayed or
broken. The power cord should be routed so that it is not likely to be
walked on or pinched by items placed upon or against it.
To reduce the risk of re: Use only No. 26 AWG or larger
telecommunication line cord.
To reduce the risk of re or electric shock: Do not expose this
apparatus to rain or moisture.
Welcome

Contents
Overview 1
Getting to know your innkeeper LTD
2Controls & Indicators
3Inputs & Outputs 2
Getting Connected 4
Operation 6
Remote Control 7
Technical Information 8
FAQs 10
Contents iii
Contents
Limited Warranty
The innkeeper LTD 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.

iv innkeeper LTD™ Digital Hybrid
16 bit DSP Technology
Auto-Answer (Switchable On/O󰀨)
Proprietary Auto Null Algorithm
(50 dB null)
Send XLR Line Input
Caller XLR Line Output
Front Panel O󰀨-Hook LED
Guest Module 1 Remote Control Jack
Send and Caller Signal Level LEDs
Send and Caller Volume Controls
Rack Mountable
Features
Universal Power Supply
with Detachable Cord RJ11 Phone Cord
What’s in the Box?
Features

Overview 1
Introducing the innkeeper LTD™
Innkeeper LTD allows you to send line level signals into the phone line while
maintaining excellent separation between your voice and the caller. The
balanced XLR output jack contains only the caller’s voice, making this the perfect
companion to mixers, consoles, and PA systems that demand talk show quality
audio from a phone line.
The digital hybrid connects audio signals to a standard analog phone line
without the transmit/receive crosstalk common to analog hybrids. Its Digital
Signal Processor (DSP) continuously monitors both the phone line and audio
signals to deliver excellent separation. This proprietary, dual-convergence echo
canceller algorithm can achieve separation typically exceeding 50 dB without
any setup and without sending a noise burst down the line. While this may sound
complicated, it’s all done automatically during every call.
Ready to go?
The innkeeper LTD 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.
Any Questions?
Before you pick up the phone... Please thumb through the rest of this manual.
You might nd those deep technical questions are covered on later pages.
Overview

2innkeeper LTD™ Digital Hybrid
Getting to Know Your innkeeper LTD
4 5 61 32
7
1. Call Button
Takes the line o󰀨-hook; press this button to answer a call or you can direct a
call from your aux phone through the hybrid.
2. OH LED
Lit when you are on line with a call (o󰀨-hook).
3. Drop Button
Press this button to drop (hang up) a call.
4. Signal LEDs
Send LEDs represent the signal level going out to the telephone line.
Caller LEDs represent the signal level coming from the phone line,
after the DSP.
5. Send Level
Adjusts the signal that you are sending down the telephone line.
6. Caller Level
Adjusts the level of the incoming caller’s audio as it is going out the output
jacks.
7. Power LED
Lit when unit is plugged in and receiving power.
Controls & Indicators

Controls & Indicators 3
Getting to Know Your innkeeper LTD
4 5 6 71 32
1. Phone Line
Connect to a standard, single line, analog telephone line.
2. Aux Phone
Connect a single line analog telephone for call setup / dialing, or producer
call screening.
3. Auto Answer
When enabled, innkeeper LTD automatically answers an incoming call and
then disconnects after the caller hangs up. Auto answer will occur on the
rst ring.
4. Caller Output
Male balanced XLR output contains only the callers voice.
5. Send Input
Female balanced XLR input for signals going into the phone line.
6. Remote Control Jack
8-pin modular RJ-45 jack for connection to the optional JK Audio Guest
Module 1 Remote Keypad or your broadcast console switch contacts (see
page 7). Do not connect this jack to your computer network port.
7. Power Jack
For connection only to the supplied 9VDC regulated power supply.
Inputs & Outputs

4innkeeper LTD™ Digital Hybrid
Getting Connected
Connecting to a Single Line Phone
1. Connect the supplied RJ-11 phone line cable between the jack marked
<Line> and your wall jack. Be sure this jack supports standard single line
analog telephone operation.
2. You may want to connect an auxiliary telephone to the innkeeper
LTD <Phone> jack so you can dial out and set up calls, or use the
<Auto-Answer> feature to answer incoming calls.
Connecting to a Mixer (Mix Minus Caller)
Note: 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 innkeeper
LTD will cause an echo, or feedback.
3. Connect the innkeeper LTD <Caller> output to any Line input on the mixer.
4. Connect your microphone(s) to the mic inputs on your mixer.
5. Connect the mixer’s Mix-Minus bus or Aux Send output (this may be labeled
FX or Mon but any Aux bus will work) to the <Send> input on innkeeper 1rx.
Set the innkeeper 1rx <Mic/Line> switch to the Line position.
6. If your mixer doesn’t have a mix-minus bus: Whichever input channel
you have the <Caller> connected to, turn the corresponding Aux control to
minimum. All Aux controls for other channels 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 a󰀨ect what is heard on the Main
outputs or on any other Aux buses.
Tip: Using anAux Send bus that is Pre-Fader allows you to control the levels of each
channel to the main output without a󰀨ecting what is sent to the phone line.
7. Connect your headphones to the mixer.
8. Use Main Outputs to send audio to recording device or broadcasting
equipment inputs.

Completing Setup
9. Connect the supplied DC power supply to the back of the innkeeper 1rx and
then to an AC power outlet.
This device should be connected to an adequate surge protective
device at all times both for the power connector and for the
telephone line to avoid damage from lightning or electrical surges.
10. Adjust the <Send> level controls so that you consistently light the green
-20 dB and -9 dB and rarely light 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. Set the <Caller> control for good recording level of the
caller audio at the output jack.
5
Getting Connected
Mic 1 Mic 2 Mic 3 Mic 4
Aux
L
R
Main Mix Out
Pre
/Mon
Post
/FX
Headphones
+-
Pre
/Mon
Aux
+-
Pre
/Mon
Aux
+-
Pre
/Mon
Aux
+-
Pre
/Mon
Aux
+-
Pre-Fader
(Mon)
L
R
+-
Post
/FX
+-
Post
/FX
+-
Post
/FX
+-
Post
/FX
+-
Post
/FX
Aux SendLine In 5/6
Recording
Device
Mix Minus Caller
Caller
21
3
5
6
9
87
4

6innkeeper LTD™ Digital Hybrid
Auxiliary Telephone
An auxiliary telephone provides you with an easy way to dial out or set up your
calls. innkeeper LTD will disconnect the auxiliary telephone when you press the
<Call> button. If you need to take the call back on the aux telephone, simply pick
up the telephone handset before the innkeeper LTD’s <Drop> button is pressed.
To use an auxiliary phone equipped with a “Hold” feature to place or screen a
call, rst set up the call and place the call on hold. When you are ready to take
the call on Innkeeper LTD, press the <Call> button on the innkeeper LTD and
your telephone will automatically release the hold.
Your phone will operate as a normal telephone anytime you are in Drop mode.
Leaving the hybrid connected between the wall jack and your telephone will not
a󰀨ect normal use of your phone. Audio will only pass through the hybrid when
you press the <Call> button.
Optional Jumper Settings
If the incoming Caller level is too high and peaking the red -3 dB LED, you
may need to change the setting of an internal jumper. Disconnect power from
the hybrid and remove the cover of the innkeeper LTD to locate Jumper 1. The
default position for this jumper is closed (covering both pins). Changing the
jumper to the open position (either remove the jumper or cover just one pin) will
provide 6 dB attenuation of the incoming audio signal.
Auto-Answer
The <Auto-Answer> feature will answer on the rst ring. When <Auto- Answer>
is enabled, you can still make calls manually using the <Call> button.
When nished, you can either drop the call manually or allow the call to
Auto-Disconnect. innkeeper LTD will look for a CPC disconnect signal from the
phone company to determine when a call has disconnected. This can take up to
a minute.
Operation

7
Remote Control
Remote Control
Remote Control Jack
The RJ-45 jack on the back of the innkeeper LTD provides connection to an
optional JK Audio Guest Module 1 remote control, or it can be wired to the switch
contacts on your broadcast console. Do not connect this jack to the network port
on your computer.
RJ-45 Pinout:
1: Ground
2: Call / Drop Control (main control pin)
3: Ring / OH LED
4: DTMF Input
5: +4.3 VDC
6: Reserved
7: Reserved
8: Reserved
To take innkeeper LTD o󰀨-hook, momentarily connect pin 2 to pin 5 (power)
through a 100 ohm ¼ watt resistor.
To release (Drop) the phone line, momentarily connect pin 2 to pin 1 (ground)
through a 100 ohm 1/4 watt resistor.
Pin 3 contains a 4.3 VDC, 40 mA current limited output to drive a signal LED. We
suggest adding a 200 ohm ¼ watt resistor in series with an LED connected to
ground.
Pin 5 supply output is current limited to 100 mA with a resettable fuse for use
with the Guest Module and pin 2 connections. Do not attempt to power additional
circuitry from this pin.
Guest Module 1 (Sold Separately)
This convenient device gives you remote access to the on-hook/o󰀨hook and
dial features of the innkeeper LTD. The <Call> button will icker when a call
comes in and will stay lit while a call is present. When you dial out using the
Guest Module 1 keypad, the tones are sent directly down the phone line, and do
not come back blasting in your ear. Product sold separately.
Guest Module 1 Features:
• Ring and Call LED
• Call and Drop Buttons
• DTMF Keypad
• Keypad Disable Switch
• Remote Powered

8innkeeper LTD™ Digital Hybrid
Technical Information
Phone Line
Jack
Aux Phone
Jack
Caller
Out
Caller
Send Level
Send
Input Digital
Hybrid
Block Diagram

Input Impedance / Level
Balanced Female XLR: 20k ohms / 50 mV RMS; -4 dBu nom.;
Output
Balanced Male XLR: 200 ohms / 500 mV RMS; -4 dBu nom.;
+14 dBu max; Caller Only
Misc
Phone Line: RJ11C
Remote Jack: RJ45
Ringer: 0.8B REN
Isolation: 1500 VAC
Frequency Response: Telephone Side 200 Hz-3.6 kHz
Power: 120-240 VAC Power Supply
Size: 7.6” x 5.3” x 1.5” (20 x 14 x 4 cm)
Weight: 2.7 lbs (1.2 kg)
Specications
Technical Information 9
Technical Information

10 innkeeper LTD™ Digital Hybrid
FAQs
1. Does the innkeeper LTD send a burst or beep down
the phone line at the beginning of each call like our
current hybrid?
No. Innkeeper LTD uses the actual transmit signal to evaluate the phone line
and tune its algorithm. As you begin to speak, innkeeper LTD is hard at work
canceling your voice from the Caller Output jack. Within milliseconds your
voice is reduced into the noise oor.
2. Can I use the innkeeper LTD on a VoIP line?
Many VoIP lines have an analog telephone adapter you can connect
your telephone to. If you can use any standard analog telephone, then
innkeeper LTD should work great. If you have to use a specic telephone,
you should consider our AutoHybrid IP2 VoIP hybrid or Innkeeper PBX digital
hybrid instead.
3. The caller’s audio is too high and is always distorted even
though I have the Caller level control turned down low. What
else can I do?
The Receive LED meter will indicate the level of audio coming in from the
telephone line, just after it passes through the DSP. The Caller level control
will only set how much of that audio will be sent to the output jack, and will
have no e󰀨ect on the LED meter. If your incoming audio level is unusually hot
and already peaking the –3 dB LED, there is a jumper on the circuit board
you can change to attenuate the incoming audio. Please see page 6 for
more information.
4. I have my new innkeeper LTD connected to the phone jack in
my o󰀩ce. Why does it keep dropping the calls as soon as I
try to connect it?
The telephone jack in your o󰀩ce is very likely for a multi-line phone system.
The jack may look like a standard phone jack, but it is wired di󰀨erently and
may carry voltage on di󰀨erent pins which could cause serious damage to your
hybrid. Innkeeper LTD should only be connected to a single, analog phone
line. Check with the telephone specialist in your building for the possibility of
getting an analog line for your innkeeper LTD.
5. I have my new innkeeper LTD connected to an analog
extension in my o󰀩ce. It will auto answer just ne but does
not auto disconnect after the call has ended. How can I make
it auto disconnect properly?
A PBX phone system can be programmed to provide an analog line. Check
with the telephone specialist in your building for the possibility of resetting the
characteristics of your analog line to provide an appropriate CPC disconnect
signal.

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: innkeeper LTD Digital Hybrid innkeeper LTD
Conforms to the following Product Specications:
Safety:
ESD:
Emissions:
Telecom:
AS/NZS 60950.1:2003
CAN/CSA-C22.2 No. 60950-01-03
UL Standard 60950-01 1st edition
EN 55024:1998; EN 61000-3-2; EN 61000-3-3
EN 55022:1998
AS/NZS CISPR 22 (2002)
FCC Part 15, Subpart B
ICES-003
AS/ACIF S002:2005
FCC CFR 47, Part 68
TIA968 A-1, A-2, A-4
The product herewith complies with the requirements of the following Directives and
carries the CE marking accordingly:
LVD 2006/95/EC (Safety)
R&TTE 1999/5/EC (Telecom)
EMC 89/336/EEC (EMC)
RoHS Directive 2015/863
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 11
Declaration of Conformity
Declaration of Conformity

12 innkeeper LTD™ Digital Hybrid
FCC Registration
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, and,
C. The ringer equivalence number (REN) for this equipment. The REN is used
to determine the quantity of devices which will be connected to the telephone
line. Excessive RENs on the telephone line may result in the devices not
ringing in response to an incoming call. In most, but not all areas, the sum of
the RENs should not exceed 5.0. To be certain of the number of devices that
may beconnected to the line, as determined by the total RENs, contact the
local telephone company.
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

FCC Compliance Notice 13
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

14 innkeeper LTD™ Digital Hybrid

15

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.
innkeeper LTD™
Digital Hybrid
User Guide Version6/24/19
JK Audio