JK Audio innkeeper 1rx Digital Hybrid User Manual

JK Audio

User Guide

innkeeper 1rx

™

Digital Hybrid

ii

innkeeper 1rx™ Digital Hybrid

Thank You

Thank you for purchasing a JK Audio innkeeper 1rx 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:
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.

Limited Warranty

The innkeeper 1rx 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.

Warnings & Safety Precautions

• Read and keep these instructions.

• Heed all warnings.

• Follow all instructions.

• Clean only with a soft dry cloth.

• Do not install near any heat sources such as radiators, heat registers, stoves,

or other apparatus (including ampliers) that produce heat.

• 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.

• 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 or electric shock, do not expose this apparatus to rain
or moisture.

• Refer all servicing to qualied service personnel.

Welcome

Overview 1
Getting to know your innkeeper 1rx

2 Controls & Indicators
4 Inputs & Outputs

2

Getting Connected

6

Operation

8

Conguration

9

Optional Remote Control 11
Serial Port Interface 12
FAQs 13
Technical Information 14

Contents

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Contents

iv

innkeeper 1rx™ Digital Hybrid

16 bit DSP Technology

Auto-Answer (Switchable On/O󰀨)

Proprietary Auto Null Algorithm
(50 dB null)

AGC, Ducking, Presence
1 kHz Tone Generator
Send XLR Line Input
Mic/Line Switch
Caller XLR Line Output

Mix Out XLR Line Output
Front Panel 1/4” Headphone Jack
Remote Control via Screw Terminals

or RS-232
RIU-IP Remote IP Interface
Monitor Speaker Terminals
Send and Caller Signal Level LEDs
Send and Caller Volume Controls

Features

Detachable North American
Power Cord

CN081 Serial Port Cord

RJ11 Phone Cord

What’s in the Box?

Features

Overview

1

Introducing the innkeeper 1rx™

innkeeper 1rx will allow you to send and receive audio over analog telephone
lines. While this may seem like a simple task that any telephone can do, the
challenge is getting the best quality audio from such a miserable audio path.

What is a Digital Hybrid?

The innkeeper 1rx digital hybrid connects audio signals to a standard analog
telephone line without the variations in quality found with analog hybrids. The
main function of a hybrid is to bring in the caller’s voice from the phone line as
clear and clean as possible. In the real world, when you send your voice down
the telephone line it has a tendency to bleed over into the caller’s audio. The
hybrid must adapt to the phone line in order to properly separate transmit and
receive audio. We use a 16 bit DSP (Digital Signal Processor) to continuously
monitor the phone line and local audio signals to deliver excellent trans-hybrid
loss, also known as separation. Our dual-convergence algorithm can achieve
excellent separation, typically exceeding 50 dB.

Ready to go?

The innkeeper 1rx 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

2

innkeeper 1rx™ Digital Hybrid

Getting to Know Your innkeeper 1rx

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9 10 11 12 13 14 15 16 17

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. Drop Button

Press this button to drop (hang up) a call.

3. Send Level

Adjusts the signal that you are sending down the telephone line.

4. Caller Level

Adjusts the level of the incoming caller’s audio as it is going out the output
jacks. 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. Please see
Optional Jumper Settings on page 9.

5. Send-to-Mix Level

Adjust the level of your audio that will be sent to the <Mix Out> jack.

6. Caller-to-Mix Level

Adjust the level of caller audio that will be sent to the <Mix Out> jack.

7. Headphones

The stereo headphone jack contains the signal you have created with the
<Send-to-Mix> and <Caller-to-Mix> level controls. Both left and right
channels get the same signal.

Controls & Indicators

Controls & Indicators

3

Getting to Know Your innkeeper 1rx

Indicators Cont’d

8. Mix Monitor

Adjusts the mix signal level sent to the headphone and rear panel
speaker terminals.

9. Power LED

Lit when unit is plugged in and receiving power.

10. Ring LED

Flickers when you have an incoming call.

11. OH LED

Lit when you are on line with a call (o󰀨-hook).

12. Signal LEDs

Send LEDs represent the signal level going out to the telephone line.
Receive LEDs represent the signal level coming from the phone line,
after the DSP.

13. AGC - Automatic Gain Control

When enabled, automatically adjusts the gain of caller audio so all callers
are received at an average level.

14. Caller Ducking

When enabled, innkeeper 1rx lowers the caller’s audio level by 9 dB when
local audio is present.

15. Presence

When enabled, this feature boosts the low end of the caller audio signal.
Presence is added to the caller audio signal only.

16. 1 kHz Tone Generator

Press button once to send a full scale 0 dB, maximum output level 1kHz
tone down the phone line. Press again to send this signal out the Caller

jack. Press a third time to turn o󰀨.

17. Auto-Answer

When enabled, innkeeper automatically answers an incoming call and
then disconnects after the caller hangs up. Auto answer will occur on the

rst ring.

4

innkeeper 1rx™ Digital Hybrid

Getting to Know Your innkeeper 1rx

Inputs & Outputs

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. Caller Output

Male balanced XLR line-level output contains only the callers voice.

4. Mix Output

Male balanced XLR line-level output contains a mix of send and receive
audio determined by the <Send-to-Mix> and <Caller-to-Mix> level controls.

5. Mic / Line switch

Sets the front end sensitivity of the Send XLR jack. Set to <Mic> if you
intend to connect a dynamic microphone directly to the <Send> jack. Set to
<Line> if you are connecting to the output of a mixer. This device does not
provide phantom power for a condenser type microphone.

6. Send Input

Female balanced XLR input for signals going into the phone line.
Mic or line level input.

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