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A-K3

Amplified Keypad with Multisource Capability

for A-BUS® System

Installation Manual

CONNECTION INSTRUCTIONS FOR A-K3. REFER TO NUMBERED DIAGRAM ON REVERSE.

A-K3 Overview

The Russound A-K3 is an in-wall amplified keypad used

with A-BUS hubs and controllers in a distributed audio

system. It can be used with both single- and multi-source

A-BUS hubs/controllers. The A-K3 provides source selec-

tion and control with backlit push buttons, plus an IR

window to receive remote control signals.

The volume up/down buttons control the speakers in

the room that are connected to the A-K3. Typical installa-

tions place one A-K3 in each room of the A-BUS system.

The Line Out connection on the A-K3 can be used to

feed a separate powered subwoofer or to connect an

external amplifier for more power to a larger listening

area.

A-K3 Key Features

• Power On/Off button (acts as source select with

multi-source hubs/controllers)

• Volume trims for L/R balance and maximum level

settings

• Built-in IR receiver with IR confirmation LED

• IR control of settings and sources via A-LRC2 optional

remote

• Line Out connection for external amp or powered

subwoofer

A-K3 Speciﬁcations

Output Impedance: 8 ohms/channel (1 pair speakers)

Input Impedance: 10 kohms

Power Requirements: +24VDC 660mA peak

CAT-5 Connections: RJ45

Dimensions (in-wall): 1.75”W x 2.875”H x 1.75”D

(45x73x45mm)

Weight: 5.5oz. (160g)

5 Source Mode Jumper for Single/Multisource

The single/multisource jumpers set the A-K3 to be used

with either single- or multi-source A-BUS hubs/control-

lers. The jumpers and pins are located under the face-

plate on the right side of the keypad (facing front).

The pins are jumpered to select between 1, 4 and 6

sources. 1 source = no jumper; 4 sources = top two pins

jumpered; 6 sources = bottom two pins jumpered.

6 Gain Control for Maximum Levels

The two rotary trim potentiometers on the side of the

A-K3 provide adjustment of audio gain. These are used to

set the maximum allowable volume for the left and right

speakers connected to the A-K3.

7 Keypad Connection to A-C68 Controller

Each keypad connects to a Keypad Output port on the

back of the A-C68 controller. Connections are made using

CAT-5 cable with an RJ45 connector.

The Keypad Ports are located on the back of the A-C68

on the left. Connections at the Keypad Ports are made

with RJ45 connectors using T568A CAT-5 wire configura-

tion. CAT-5 cable length should be no longer than 150

feet from controller to keypad.

If used in a system with A-K5L keypads, when connecting

A-K3 keypads to the A-C68, the keypad dip switches on

the controller’s front programming center must be set in

the UP position. Dip switches correspond to numbered

keypad ports.

If used in a A-C68 system with no A-K5L keypads, set the

keypad dip switches in the UP position.

For a clean installation when wiring from a Keypad Port,

use an RJ45 CAT-5 patch cable to connect from the key-

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

RJ45 T568A CAT-5 wiring configuration, use CAT-5 from

the RJ45 wall plate to the keypad.

8 Installation

Check all connections and test the system’s operation

before installing the A-K3 into the wall. Using the includ-

ed hardware, install the A-K3 into a standard UL/CSA

single-gang electrical J-box.

1 RJ45 Connector for CAT-5 Connection

The RJ45 input provides a connection for the CAT-5 cable

from an A-BUS hub/controller to receive an audio signal,

passthrough IR and power over the CAT-5 cable. Use the

T568A wiring standard. The recommended maximum

length for standard CAT-5 cable is 150 feet.

Before connecting the A-K3, disconnect the power sup -

ply from the A-BUS hub/controller and disconnect the

Status power supply if used.

2 Line Out Connector for External Ampliﬁcation

The Line Out provides a variable line-level audio output

connection for an external amplifier or powered sub-

woofer. An amplifier provides more power to a large

listening area, and a powered subwoofer adds extended

bass response.

Use 22AWG four conductor, two-pair twisted shielded

cable to connect to the Left positive (+) and negative (-),

and Right positive (+) and negative (-) screw down termi -

nals on the back of the A-K3.

Terminate the four conductor two-twisted pair shielded

cable to the rear solder lugs of a wall plate fitted with

two RCA jacks on its front. Terminate the shield at the

Right negative (-) or Left negative (-) ring of the solder

lugs. RCA cables can be used to connect the amp or sub-

woofer to the wall place for audio signal feed.

3 Speaker Output Connector for Speakers

The Speaker Output connections provide speaker-level

audio output for a pair of 8-ohm speakers. The screw-

down terminals accepts up to 16 gauge speaker wire.

4 Status Jumper for Status LED Enable/Disable

The Status option provides visual indication when source

equipment is powered on. With this option enabled, the

status LED shows green on the keypad when the system

is on (keypad can be on or off).

To enable the Status LED, locate the status pins on the

right side of the keypad under the faceplate. Place the

status jumper over the bottom two pins to enable the

status LED.

Note: Amplified keypads are shipped with the Status LED

option disabled (default).

Status function and operation:

When the source is powered on, the Status circuit is

green. This indicates to the user that the source is on and

ready to receive remote control commands.

When the source is powered off (remotely or manually),

it shuts off the 12VDC Status power connected to it, and

turns off all the interfaces connected to the controller

(green LED off).

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 - Follow all operating and user instructions.

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; or

The appliance has been dropped or the enclosure is damaged.

12. Servicing - The user should not attempt to service the appliance

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

vicing 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-K3 is fully 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 per-

mission 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 purchased from an unauthorized dealer or other source,

including retailers, mail order sellers 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.

5 Forbes Rd., Newmarket, NH 03857, USA

Tel 603.659.5170 • Fax 603.659.5388

e-mail: tech@russound.com

28-1258 10/19/07

marks are property of their respective owners. Russound is not

responsible for typographical errors or omissions. Specifications

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

A-K3 Keypad Front Panel Operation

Commo n IR

12VDC

Tr igg er Out

100mA

Outputs to Keypads

1234

5 6 7 8

Page

In Page

Trim

Mute In

Source A udio Connectio ns

1 2 3 4 5 6

OutInIR

Control Lin k

In Out

Src Tri m Src Tri m Src Tri m Src Tri m Src Tri m Src Tri m

L GAIN R

R235LS Amplifier

RCA

Cable

22AWG

2 pair

twisted

shielded

cable

14 6

A-C68 (back)

Keypad Dip Switches

Update

Source/

Test

Cmd/

Type

Num Sr c

Code /

Key

IR Learn

Fact Init

Run

Firmw are Update SetupIR In

1 2 3 4 5 7 86

Keypad Dip Sw itches

A-C68 (front)

CAT-5

cable

Status

jumper

Source

jumper

LED

A-K3 (back) A-K3 (front)

A-K3 (side)

8-ohm speakers

Speakers

Speaker cable

Keypad dip switch on A-C68

set in DOWN position

1 2 3 4 5 7 86

Hub

CONNECTION DIAGRAM FOR A-K3. REFER TO THE NUMBERED INSTRUCTIONS ON REVERSE. DIAGRAMS ARE NOT TO SCALE.

VOLUME UP/DOWN - Raises/lowers room volume

VOLUME LEVEL - Volume level indicator LEDs light up

from bottom to top to indicate volume level. Also

indicates source selected (1-6) when in “multi-source”

mode.

STATUS LED - Green LED lights to show Status “on” and

turns off when Status is “off”

IR CONFIRMATION LED - Red LED blinks to confirm IR

signal reception.

IR RECEIVER - Receives IR signals from a remote

control. Source components attached to IR emitters

in an A-BUS system can be controlled with their own

remote controls or A-LRC2 learning remote aimed at

the A-K3.

POWER - Turns zone ON when pressed once. (In multi-

source mode, when ON, press and hold will turn zone

OFF. When OFF, press and hold will turn OFF all zones.)

Status LED remains lit when keypad/zone is OFF if any

other zone in system is ON.

SOURCE SELECT (Multisource controller) - When the

keypad is set in “Multisource” mode, the power button

is used to toggle through and select a source. Tap the

power button to toggle between 1 and 6 multiple

sources (once power is on). 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).

Produktspecifikationer

Varumärke:	Russound
Kategori:	Fjärrkontroll
Modell:	A-K3

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