Russound A-H484 Installation Manual Download Page 1

A-H484 Overview

The Russound A-H484 is a four-zone, four-source audio 

distribution hub used with A-BUS amplified keypads. The 

A-H484 can be linked to another A-H484 to increase the 

number of zones in a system. 
The A-H484 multisource hub supports four audio 

sources in a four-zone A-BUS system. Each zone is 

expandable to two rooms with inputs for A-K4 keypads. 

You can select any source independently in each zone at 

the keypad or with an USRC remote control. 

A-H484 Features

•  Four line-level audio inputs
•  Four zone coupled outputs (2 keypads per zone)
•  12VDC trigger output
•  Link in and out
•  4 routed, 1 common IR outputs 

A-H484 Specifications

 

Power Supply:

 A-PS, 24VDC, 2.5A  

                                                 (one required for each bank A, B)

 

Trigger Output: 

2VDC, 100mA, 1/8” male  

                                            (tip (+). sleeve (-)) 

 

Keypad Connection: 

CAT-5, RJ45 connector, T568A

 

Link Connection: 

CAT-5, RJ45 connector, T568A

  R Emitter Connection:

 1/8” male, tip (+), sleeve (-)

 

Dimensions:

 6.5”W x 5”H x 1.5”D  

                                            (165 x 127 x 38mm)
 

Weight:

 1.0 lb. 12 oz. (795g)

Safety Instructions

1.

  Read Instructions - All the safety and operating instructions should 

be read before the appliance is operated.

2.

  Retain Instructions - The safety and operating instructions should be 

retained for future reference.

3.

  Heed Warnings - All warnings on the appliance in the operating 

instructions should be adhered to.

4.

  Follow Instructions - All operating and user instructions should be 

followed.

5.

  Water and Moisture - The appliance should not be used near water; 

for example, near a bathtub, washbowl, kitchen sink, laundry tub, in 

a wet basement, or near a swimming pool.

6.

  Wall or Ceiling Mounting - The appliance should be mounted to a 

wall or ceiling only as recommended by the manufacturer.

7.

  Heat - The appliance should be situated away from heat sources 

such as radiators, heat registers, stoves, or other appliances (includ-

ing amplifiers) that produce heat.

8.

  Power Sources - The appliance should be connected to a power 

supply only of the type described in the operating instructions or as 

marked on the appliance.

9.

  Grounding or Polarization - Precaution should be taken so that the 

grounding or polarization means of an appliance is not defeated.

10.

  Object and Liquid Entry - Care should be taken so that objects do 

not fall and liquids are not spilled into the enclosure through the 

openings.

11.

  Damage Requiring Service - The appliance should be serviced by 

qualified service personnel when: 

 

The power supply cord or the plug has been damaged;   

 

Objects have fallen, liquid has been spilled into the appliance 

The appliance has been exposed to rain 

The appliance does not appear to operate normally 

The appliance has been dropped or enclosure is damaged.

12.

  Servicing - The user should not attempt to service the appliance 

beyond that described in the operating instructions. All other servic-

ing should be referred to qualified service personnel. 

13.

  Care – From time to time you should wipe off the front panel with a 

soft dry cloth. 

Limited Warranty

The Russound A-H484 is guaranteed for two (2) years from the date of purchase against 

all defects in materials and workmanship. During this period Russound will replace 

any defective parts and correct any defect in workmanship without charge for either 

parts or labor. For this warranty to apply, the unit must be installed and used according 

to its written instructions. If service is necessary, it must be performed by Russound. 

Russound assumes no responsibility for defects resulting from abuse or servicing 

performed by an agency or person not specifically authorized in writing by Russound. 

Damage to or destruction of components due to improper use voids the warranty. In 

these cases the repair will be made at the owner’s expense. Accidental damage and 

shipping damage are not considered defects under the terms of the warranty. To return 

for repairs, the unit must be shipped to Russound at the owner’s expense, along with a 

Return Authorization number and documentation explaining the nature of the service 

required. Any product returned without prior written permission will be returned to 

sender. Russound sells products only through authorized Dealers and Distributors to 

ensure that customers obtain proper support and service. Any Russound product pur-

chased from an unauthorized dealer or other source, including retailers, mail order sell-

ers and online sellers will not be honored or serviced under existing Russound warranty 

policy. Any sale of products by an unauthorized source or other manner not authorized 

by Russound shall void the warranty on the applicable product.

CONNECTION INSTRUCTIONS FOR A-H484. REFER TO NUMBERED DIAGRAM ON REVERSE.

A-H484

Multisource, Multizone Hub

for A-BUS

®

 System

Installation Manual

1  Amplified Keypads       

The  A-H484 has coupled zone outputs in two groups of 

four (A and B) that support each of the A-K4 keypad per 

zone. Source selection is shared by coupled zone outputs. 

Connect up to eight A-BUS amplified keypads to the 

A-H484 with CAT-5 cable using RJ45 CAT-5. 

NOTE:

 A-BUS keypads must be set to multisource mode 

to be used with the A-H484 hub. See A-K4 keypad 

installation manuals for complete details.
The zone output on the A-H484 is a CAT-5 RJ45 

connector using T568A wire configuration. The A-K4 has 

an RJ45 connector with T568A wire configuration.  

2  IR Emitters   

Routed IR Outputs and Common IR Output. Connect an 

IR emitter such as the IRE-1 to each of the 4 IR connectors 

on the A-H484. When a source is selected from a zone, 

the IR signal received through the zone’s keypad is 

routed exclusively to that source via the A-H484’s Routed 

IR outputs. This allows the use of multiple sources of 

the same brand (for example, two identical DSS units). 

The Common IR output sends out all IR signals and 

can be used with an IR flasher that blankets all source 

components. 

3  Trigger Output   

The 12VC trigger output can be used to control a 

switched AC outlet to turn power on and off to source 

equipment. The trigger voltage is sent when any zone is 

in the system is turned on. When the ALL OFF command 

is used, the trigger is turned off. Use a 1/8” male 

2-conductor jack (not included).  

4  Link In and Link Out   

The Link In and Out is used to connect multiple A-H484 

hubs to allows for use of additional A-BUS keypads. The 

connection is made using an RJ45 patch cable. The Link 

connects the Routed IR, Common IR, and Status. Audio 

signals are shared with  linked A-H484 hubs using “Y” 

cables to split the audio outputs. 
The A-H484

 CANNOT

 be linked to single-source A-BUS 

Hubs such as A-H2, A-H4P and A-H1, as these use a 

different format for linking. 

5  Sources  

The A-H484 has four stereo audio inputs that support 

connections to multiple audio sources. If sources are 

connected to an existing home theater receiver, they can 

be shared with the A-H484 by using “Y” connectors for 

the audio outputs. 

6  Keypad Connection to A-H484 Hub

Each keypad connects to a Keypad Output port on the 

A-H484 hub. Connections use CAT-5 cable with an RJ-45 

connector using T568A CAT-5 wire configuration. CAT-5 

cable length should be 150 feet or less from hub to 

keypad.

7  Power Supply   

The A-H484 hub and amplified keypads are powered 

by the A-PS 24VDC/2.5A power supply. Each row (A and 

B) must have its own power supply. The A-PS should 

be plugged into an unswitched AC outlet (one that is 

live all the time). When the A-PS is providing power, the 

A-H484’s POWER LED will illuminate once a keypad is 

turned on. 

8  Installation   

Install the A-H484 near the system’s source equipment 

using screws or hook and loop fastener. The A-H484 will 

also fit many structured wiring distribution panels.

9  Operation   

The A-H484 is designed to be used with A-K4 and  

multisource-capable amplified keypads. 
A-K4 keypad can be operated manually or by using 

the USRC remote control. If using installed IR emitters, 

sources can be operated with their own remote control 

by aiming it at the IR window on an A-K4 keypad.
When the A-K4 keypad is set in multisource mode, tap 

the power button to toggle through and select a source. 

The top LEDs of the volume indicator show (from top to 

bottom) the source that is selected (top LED is source 1, 

next LED down is  source 2, etc).
For a clean installation when wiring from a Keypad Port, 

use an RJ-45 CAT-5 patch cable to connect from the 

keypad port to an RJ-45 wall plate (optional). Using the 

same RJ-45 T568A CAT-5 wiring configuration, use CAT-5 

from the RJ-45 wall plate to the keypad. 

Russound, Inc. 

1 Forbes Rd., Newmarket, NH 03857, USA

tel 603.659.5170 • fax 603.659.5388    www.russound.com

technical support: 866.888.7466   e-mail: [email protected]

28-1157  Rev. 4  09.13.16  

Copyright ©2016 Russound® All rights reserved. All trademarks are the property 

of their respective owners. Russound is not responsible for typographical errors or 

omissions. Specifications are subject to change without notice. 
A-BUS is a registered trademark of LeisureTech Electronics Pty Ltd Australia. This 

product may be covered by one or more of the following patents: US #7,181,023, 

#6,389,139; EP #1004222, AU #739808, NZ #502982, Mexico #241196, Canada 

#CA2301062.

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