Niles ABA-1D Instrucciones de funcionamiento originales

ABA-1D

INSTALLATION & OPERATION GUIDE

NILES

MODEL

ABA-1D

AMPLIFIER A OR B SELECTOR

ABA-1D

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Introduction

The ABA-1D is a wall-mount, Decora®style A-B selector that

enables you to play either of two amplifiers through a

shared pair of loudspeakers. Conversely, the unit may be

used to play a single amplifier into either of two pairs of

loudspeakers.

Features and Benefits

The ABA-1D offers a number of improvements over other A-B

selectors.

●Interchangeable Decora inserts for fast, easy color change.

Inserts and buttons (sold separately) are available in a vari-

ety of colors.

●Self-cleaning, silver-plated switch contacts assure many

years of trouble-free use.

●Printed circuit board design uses no hand wiring, assuring

high reliability.

●The circuit board connectors can accommodate up to

14 gauge wire, making the ABA-1D compatible with

most “high definition” speaker cables.

TABLE OF CONTENTS

Introduction 1

Features and

Benefits 1

Installation

Considerations 3

Installation 8

Operation 10

Specifications 10

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ABA-1D

Speaker/Amplifier

Selector

DS00105A/ABA-1D 2/4/99 4:27 PM Page 1

●100% tested, electronically and acoustically, for frequency

response, distortion and power handling.

●Isolated left and right channel grounds make it safe for use

with any amplifier.

●May be used with 4, 6, or 8 ohm speaker systems.

●Ideal for both home and commercial sound installations.

●Only screwdriver and wire stripper required for installation.

●Power handling: 350 watts/channel continuous power

(RMS).

●Frequency response: Flat from 20 Hz to 20 kHz.

●Available colors: White, Bone, Almond, or Black.

●Ten year parts and labor warranty.

●Proudly made in the USA.

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Installation Considerations

The ABA-1D is a Decora-style module and is designed to use

standard Decora-style cover plates and mounting hardware.

Decora cover plates (up to 6-gang) with color-matched plate

screws are available from your Niles dealer.

P-Rings and Electrical Boxes

The mounting depth of the ABA-1D is 2 1/2". When installed,

the unit extends 2" behind the sheetrock wall (assuming 1/2"

sheetrock). For installation, you must choose between a stan-

dard light switch plaster ring (p-ring) or a standard 18 cu. in.

(or larger) electrical box. Suitable p-rings and electrical boxes

are available from your Niles dealer or local electrical supply

company. Using the p-ring is best because it gives you unob-

structed access to the full depth of the wall. In some

instances, the use of a p-ring may be inappropriate, such as

in a retro-fit (existing) installation, or when building codes

require that wall devices be enclosed in electrical boxes.

Contact your local building code and inspection department

if unsure.

Type of Speaker Wire

For most applications, we recommend you use 16 or 18

gauge, stranded copper speaker wire for the ABA-1D connec-

tions. For wiring runs longer than 80 feet, 14 gauge wire is

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TOOLS

REQUIRED

• No. 2 Phillips

Screwdriver

• 1/8" Standard

Slotted Screwdriver

• 1/4" Standard

Slotted Screwdriver

• Wire Stripper

DS00105A/ABA-1D 2/4/99 4:27 PM Page 5

recommended. Using speaker wire larger than 14 gauge for

the ABA-1D connections is not recommended—the wire

may not fit into the connectors. Never use solid-core, alu-

minum, or "Romex" type wire with the ABA-1D. When run-

ning speaker wires inside walls, most states and municipalities

in the U.S. specify that you must use a special type of speaker

wire. Usually, the requirement is that the wire has a specific

"CL" fire rating, such as "CL-2" or "CL-3". Consult your Niles

dealer, building contractor, or local building and inspection

department if unsure about which type of wire is best for

your application.

ABA-1D Mounting Location

Convenient mounting locations for the ABA-1D are:

●Near entry-ways or exits

●Near a desk

●At your bedside

●Close to a telephone

●Near other wall controls (see caution below)

DO NOT INSTALL THE ABA-1D INTO ELECTRICAL BOXES

WITH 110 VOLT DEVICES.

Some states or municipalities allow devices such as the ABA-

1D to be installed into the same electrical box as 110 volt

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"TECH TIP"

Wire size is

expressed by it's

AWG (American

Wire Gauge)

number. The lower

the AWG number,

the larger the wire,

i.e., 12 AWG wire is

physically larger

than 14 AWG.

DS00105A/ABA-1D 2/4/99 4:27 PM Page 8

devices, provided a "low-voltage partition" is used between

the devices. We do not recommend this. Speaker wires can

act as an "antenna" for electrical noise. Locating speaker

wires too close to a light switch or dimmer may cause a

"popping" or "buzzing" sound to be heard through the

speakers. If you must locate the ABA-1D near electrical

devices, install it in a separate metal electrical box, ground

the box to the electrical system ground, and route the speak-

er wires several feet away from the electrical wiring.

Changing the Color of the ABA-1D

The Decora insert and button on the ABA-1D are removable,

allowing fast and easy color changes as needed. Inserts and

buttons are available in a variety of colors.

If you need to change the color of the ABA-1D:

1. Obtain the ABA-1D Decora insert and button in the

desired color from your Niles dealer.

2. Holding the ABA-1D as shown in (Figure 1), locate the

two plastic mounting tabs at the top rear of the Decora

insert. Using two fingers, simultaneously press both tabs

down (towards the center of the insert) and forward (away

from you) until the insert pops free from its mounting

slots.

3. Hold the ABA-1D as shown in (Figure 2). Remove the

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button from the switch using your fingers. DO NOT use

pliers or other tools as these may damage the button.

4. Locate the new Decora insert. Hold the ABA-1D so that it is

facing you. Insert the two bottom tabs into the bottom slots

first, followed by the two tabs on the top. Snap the insert

into place by carefully pressing on the front of the insert.

5. Locate the new button. Secure the button to the switch

by gently pressing it into place.

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Figure 2

Removing the

Button

Figure1

Removing the

Decora-style Insert

"TECH TIP"

Do not exert

excessive pressure

on the plastic

mounting tabs.

DS00105A/ABA-1D 2/4/99 4:27 PM Page 10

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(a) Electrical Box

(b) Speaker Wire

(d) Snap-on Color Insert (supplied)

(e) Button (supplied)

(f) Device Screws (2 supplied)

(g) Decora Faceplate (supplied)

(h) Faceplate Screws (2 supplied)

DS00105A/ABA-1D 2/4/99 4:27 PM Page 7

Installation

If you are installing the ABA-1D into an existing

wall, take time to consider any possible obstruc-

tions which may be hidden inside the wall, such

as wood and metal studs; electrical, telephone or

other types of wiring; plumbing; conduit; old wall

safes; etc.

1. Install the electrical box or p-ring in the usual

manner.

2. Run all the necessary wiring to the ABA-1D.

Label the wires for future reference.

3. Make the connections to the ABA-1D. Strip 1/4"

of insulation from the end of each wire. Tightly

twist the end of each wire until there are no

frayed ends. Insert each wire into the appropriate

hole on the connector blocks; secure the wiring to

the connectors by tightening the small connector

screws. Be certain that proper phasing is

observed—connect the positive terminals on the

ABA-1D to the positive terminals on the amplifiers

and speakers and the negative terminals on the

ABA-1D to the negative terminals on the amplifier

and speakers. See (Figure 3).

4. Secure the ABA-1D to the electrical box or p-ring. Insert the

1 1/4" long device screws into the oblong-shaped screw holes

on the top and bottom of the ABA-1D. Note that the oblong

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ABA-1D

Speaker

Pair B Speaker

Pair A

Receiver

Figure 3

Wiring Diagram

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shape of the screw holes allow you to position the ABA-1D so

that it is vertical. Position the ABA-1D so that the screws are

aligned with the threaded holes in the electrical box or p-

ring. Tighten the screws using a phillips screwdriver.

DO NOT OVER-TIGHTEN. In some instances, you may need

to loosen these screws several turns to allow the ABA-1D to fit

flush with the Decora cover plate. See (Figure 4).

5. Use the shorter plate screws to fasten the Decora cover

plate to the ABA-1D. DO NOT OVER-TIGHTEN THE PLATE

SCREWS OR YOU MAY DAMAGE THE COVER PLATE. Line up

all the screws in the same direction for a finished look.

NOTE: Certain "old work" or "retro-fit" boxes, such as the

Carlon B225R, have a plastic "lip" which interferes with the

Decora plate screws. This lip prevents you from being able to

tighten these screws completely. To make the clearance nec-

essary for these screws, you must remove the parts of the lip

causing the interference. There are two ways to accomplish

this:

1. Drill through the lip of the box at the screw points.

2. Cut notches into the lip with a pair of diagonal cutters.

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Figure 4

Loosening the Screws

for a Flush Fit

DS00105A/ABA-1D 2/4/99 4:27 PM Page 3

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