JK Audio Broadcast Host User Manual

Broadcast Host

ANALOG DESKTOP DIGITAL HYBRID

User Guide

™

JK Audio

Welcome

Thank You

Thank you for purchasing a JK Audio Broadcast Host Analog Desktop 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 Broadcast Host 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.

Broadcast Host™ Analog Desktop Digital Hybrid

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Contents

Contents

Overview 1

Getting to know your Broadcast Host™

2 Controls & Indicators
4 Inputs & Outputs

Getting Connected

Operation

Conguration

FAQs 10

Technical Information 12

2

6

8

9

Contents

iii

Features

Features

16 bit DSP Technology

Auto-Answer (Switchable On/Off)

Proprietary Auto Null Algorithm
(50 dB null)

Send XLR Line Input

Mic/Line Switch

3.5mm Mono Line Input

In the Box

Universal Power supply with
detachable cord

Caller XLR Line Output

3.5mm Stereo Line Output

3.5 mm Stereo Headphone Jack

Send and Caller Signal Level LEDs

Send and Caller Volume Controls

Guest Module Remote Jack

60” RJ11 Phone Cord

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Overview

Introducing the Broadcast Host™

Broadcast Host 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 limited audio path.

What is a Digital Hybrid?

The Broadcast Host 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 Broadcast Host controls and connectors are clearly marked and ready for
operation. The Features diagrams and Operation sections on the following pages

will help you pinpoint any minor questions that you may have. 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

1

Getting to Know Your Broadcast Host

2

3 4 5 6 71

8 9

10 11

Controls & Indicators

1. Call Button

Press this button to answer an incoming call or to connect your call through
the hybrid if you have used an auxiliary phone to set up the call.

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.

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