1. Introduction
The product you have just purchased is an integral
part of the OnQ A-BUS Multi-Room Audio System.
It is a component which, when combined with other
essential components and your source equipment
(receiver, CD player, etc.), creates a versatile
whole-house audio system that will fill your rooms
with high-quality sound for years to come. A-BUS
technology is a new, innovative method of providing
high quality audio to remote locations with a single
8-conductor cable such as CAT5. A-BUS
technology provides many advantages over other conventional methods of audio distribution such as simple,
single CAT5 wiring scheme, infrared control of system components and system power status.
2. Description
The A-BUS Source Input Unit (P/N 364474-02) is the source equipment interface of the A-BUS system. The
audio input connects to the receivers (or pre-amps) line level output (tape out, 2nd zone output, etc.). The
emitter output ports (4 of them) are for powering emitters (P/N 364494-01) providing control of the source equip-
ment via the IR passing OnQ A-BUS volume controls. There is a status power input that can be used to
indicate whether the source equipment is ON or OFF. This is accomplished by plugging the 12 VDC power
supply (included) into a switched outlet of the receiver/pre-amplifier and plugging in the connector into the status
input jack located on Source Input Unit. The Bypass/Status Switch must be in the “Status” position. The Status
input can also be used with receivers/pre-amplifiers that have a 12 VDC trigger output.
NOTE: If not using “true” status monitoring by plugging the A-Bus Status Power Supply into a switched
outlet or by using a switched DC output of a receiver/pre-Amplifier, simply place the Bypass/Status
Switch to “Bypass”. This will allow operation without using a status power supply.
IMPORTANT: Read the manuals that are included with all associated
A-BUS products before installation of any single
component! If you are unsure of any of the following
installation procedures contact OnQ Technical Support
@ 1-800-321-2343 option 2 or contact an OnQ
professional installer.
3. Installation
The Source Input Unit is located at the source equipment.
A dedicated CAT5 run from this location to the 4 Zone Distribution Hub
located in the OnQ enclosure is required.
A. Make sure that the Power Supply (P/N 364447-01) is not
connected to the 4 Zone Distribution Hub. Also make sure that the status input is not connected.
B. Connect a pair of RCA interconnect cables from the receiver/pre-amplifiers line level output (2nd zone
out, tape 1 out, tape 2 out, etc.) to the AUDIO IN jacks of the Audio Interface Hub. It is recommended
that you NOT use a pre-amp (or non fixed output) from a receiver/pre-amplifier. If this is used the output
will be post the receiver/pre-amplifiers volume control thus making the output to the Audio Interface
Module vary with the volume setting of the receiver/pre-amplifier.
OnQ Technologies, Inc.
P.O. Box 60907
Harrisburg, PA 17106-0907
800-321-2343
www.onqtech.com
Installation/Instruction Sheet
A-Bus Source Input Unit
IS-0148 Rev. B
IS-0148 Rev. B Page 1 of 2
Ref. P/N 100225-48
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