Niles SI-1260 Installation Manual

INSTALLATION

-

&

OPERATION

GUIDE

Systems Integration Amplifier®

B

lEN

0 I N G H I G H F

IDE

liT

Y

AND

ARC

HIT

E C T U R

E®

CONGRATULATIONS!

Thank you for purchasing the Niles

51-1260

Systems

Integration Amplifier, oneofthe
most versatile and powerful multi-channel amplifiers ever offered. Like all Niles
products, the

51-1260isbuilt to the highest standardsofquality and reliability.

proper installation and operation, you'll enjoy

years

of trouble-free

use.

With

Niles manufactures the industry's most complete line of custom installation compo­nents and accessories for audio/video
Niles, Catalog

Request,

P.O.

Box

160818,

systems.

For

a free full-line catalog write:

Miami, Florida 33116-0818 or visit

www.nilesaudio.com.

TABLE

INTRODUCTION

FEATURES

SYSTEM DESIGN

SYSTEM DESIGN CONSIDERATIONS

OF

AND

CONTENTS

BENEFITS

BASICS

2

3

5

6

APPLICATIONS

CONFIGURING

INSTALLATION CONSIDERATIONS

FRONT &

INSTALLATION

OPERATION

TROUBLESHOOTING

CONFIGURATION

SPECI

REAR

FICATIONS

YOUR

PANEL

SYSTEM

DETAILS

GUIDE

WORKSHEET

8

13

14

15

18

23

27

29

30

INTRODUCTION

Designed

Systems
installation

enables

monoinany

roomsofdifferent

mulliple

if

desired

As

you

you
gious

51-1200, was selected Best New Productin1994 by both

Magazine

for

useinhigh-endlhigh-powered distributed audio systems, the St-1260

Integration

eachofits

inputs

(j.e.

read

will

understand

induslry

previously

this

Amplifier

unavailabletocustom

channels

combination,aswellasto

sizes.

enable

it

providesalevelofperformance,

installers.

tobeindependently

Additionally,

10

be

usedinseveral

the

compensate

amplifier's

configuredtoreproduce

different

The

for

differing

Dual

applications

mono background musicinsome rooms andstereoinothers).

manual

awards.

why

and

our

The

become

multi·channel

first

morc

multi4channel

familiar

amplifier

amplifier

with

design

the

introduced

Sound&Video

and the Custom Electronic Design and lristallation Association

flexibility,

51·1260'5

Bus

Matrix'"

51-1260's

has

won

and

ease

unique

design

stereo

volume

levels

feature

simultaneously

capabilities,

many

by

presti-

iles.

Contractor

(CEDIA).

addition, the St-1200 also won the Consumer Electronics Show's tnnovations

Design

and

Engineering

Award.

of

or

in

and

the

In

'95

Systems Integration Amplifier

51-1260

Figure 1

FEATURES

AND

BENEFITS

Microcontroller Based Real World Power

The

51-1260
maximizes the amplifier's operational efficiency and enables it to deliver a solid 60
watts per chan:;el into 8 ohms, 20Hz to 20kHz, 0.04% THO.
80 watts per channel into 4 ohms,
Multi-TapToroid power transformer features 6 independent secondary windings, one
for each
vides the power necessary to deliver solid, deep, controlled

of

full

speakers.

12

channel amplifier incorporates microcontroller technology which

of

the six amplifier modules.

20Hz

This

Its

power increases to

to 20kHz,

extraordinary power supply design pro-

at

0.06% THO.

bass

response

The

massive

to a house

Transparent Sound

The

audio circuitryofthe
ing the latest in discrete output transistor design, featuring 1% metal film resistors,
high quality capacitors and oversized heat sinks. All this attention to technical detail
results in a sound that

51-1260isconstructed with the finest

is

clear and uncolored.

parts

available includ-

Microcontroller Based Operation and Protection Modes

The

51-1260 utilizes advanced microcontroller

of

monitors all facets
voltage, main power
circuit/low impedance protection and DC output protection. Additionally,
see

front panel
channel pair (CH1/2, CH3/4, CH5/6, CH7/8, CH9/10 and CH

the amplifier's main power supply, providing

unlikely event that a problem occurs on one channel pair, the other channels
continue to play. When conditions return to normal, regular operation

Dual Input

Nile's unique Dual Input BusMatrix'" selector gives you the flexibility to individually
assign
Leftl
BusMatrix'", routing surround sound to the master bedroom,
mono to a bathroom
makes the

sional installer exciting new features and sound system design possibilities.

each amplifier channel to a BusMatrix'" input signal, either Leftl, Rightl,

+Rightl, Left2, Right2,

51-1260

the amplifier's operation and protection modes: over/under line

fuse

status,

LED

indicators display the operation or protection mode for each

BusMatrix™

isassimpleasflicking a switch.

an

ideal multi-room or MultiZone amplifier, offering the profes-

channel pair on/off

Selector

Left

2+Right2, or to a dedicated signal input.

fast

based

status,

and

operation circuitry that

thermal protection, short

11

/12)aswellasfor

easy

troubleshooting.Inthe

will

stereo

The

Dual Input BusMatrix'"

to the den, and

easy

will

resume.

With

the

to

II

Twelve to Six Channel Configurable Power

Eachofthe
six 120-watt channels
These

Bridging enables you to double the power to specific speaker locations, including

large rooms and outdoor applications.

51-1260's

switches

six

adjacent output pairs

by

setting the bridging switch to the "BRIDGED" position.

are

locatedatthe top

of

the

are

bridgeable.

rear

panel

(see

You

can create up to

Page

27

figure 16).

Freedom from Noise and Cross-Talk

The unique design
extremely high channel-to-channel isolation. 5ignal-to-noise ratio and cross-talk
specifications are comparable to those
recording studios. With the 51-1260, the music playing in the living room

interfere with the music playing in the den.

of

the 51-1260's Dual Input

of

BusMatrix'M

mixing consoles used in professional

PC

board ensures

will

not

Independent Level Controls

Each

channel
vidually adjust the setting for up to twelve different speaker locations for
audio performance, providing uniform sound in every room.

has

its

own independent volume level control, enabling you to indi-

optimum

Turn-On Modes

The

51-1260
panel switch, (2) microcontroller enhanced audio
appropriate amplifier channels while leaving
cross

talk
vation. Audio
51-1260

0825

The

51-1260
time
preamplifiers are equipped with a mating OB25 output connector.
connector provides 6 zones
Voltage for reliable amplifier activation.

Designed in

The Niles
year parts and labor warranty.

features

and

(3) a 3-30 volt AC/OC voltage trigger input which enables voltage acti­5ense

to turn on automatically in any kind of

three selectable turn-on modes: (7) manual turn-on via the front

unused

and External Voltage trigger

sensing

modes

system

which activates only the

channel pairs off to eliminate

enable you to configure the

configuration.

Audio and Voltage Trigger inputs

incorporates a.OB25 input connector to reduce wiring and installation

when using Niles Systems Integration Electronics. Niles

of

line-level audio signal output and a 12V Trigger

the

USA

51-1260

was

designed in the USA by Niles engineers and includes a

MultiZone

This

output

two

II

SYSTEM

As

shown in Figure2,a distrib-

uted audio/video system

defined by the number

ing zones it
tening zone you
only

RadiolTape,

time. A listening zone can con­sistofa single room or a group
of
volumes and greater conve­nience in different rooms with-

in a zone, individual volume
controls can be used. Niles
makes volume controls in vari­ous
designing your system, take

into account who
system
it. Consult your local Niles
dealer for more information.

one source (e.g. COl

rooms.

styles

and when they

DESIGN

of

listen-

has.

Within a lis­can

listen to

etc.)

To

and colors. When

at

anyone

achieve different

will

use

will

BASICS

the

use

..------.",

is

"-----.;:,-....

A Single-Zone System
allows only one source to
be heard throughout the
house at a given time.

FAMILY ROOM LIVING ROOM

LISTENING ZONE 1

Figure 2 - Single

Zone

System

[J

= =

A MultiZone
in Figure
hold
instance, a family might have
their family room wired for sur­round sound and their living
room wired for background
music.
the children can watch TV in
surround sound
and Dad
and enjoying background
music in the living room.

more flexibility.

In

system

3,

offers the house-

a two zone

are

reading the paper

as

while

shown

For

system,

Mom

r--

I I

I LIVING
I LISTENING ZONE 1 I

L...-

ROOM

_

Figure 3 - MultiZone System

r

I

I
I
I

--

I
I
I
I

I I

I

I

FAMILY

I

I LISTENING ZONE 2

L...-

ROOM

I

II

_

II

SYSTEM

DESIGN

CONSIDERATIONS

Speaker Compatibility

A single channel (not bridged)ofthe 51-1260iscapableofdriving a

As

speaker load.
channel, presenting the amplifier a 2.66 ohm load. Proper ventilation
is

critical when driving
ventilated, the protection circuits may activate and shut off the channel at higher
volume levels (for more information on proper amplifier placement,

Considerations on page

A channel pair that
4 ohms. Proper ventilationofthe
bridged channels. Ifthe
activate and shut off the channel at higher volume levels (for more information on

proper amplifier placement,

When designing your

plete line
els

rated from 6-8 ohms).

of

manyasthree 8 ohm speakers can be safely connected to a single

low

impedance loads. If the

77).

has

been BRIDGEDiscapableofdrivinganimpedance load

51-1260iscritical when driving a 4 ohm load

51-1260isnot properly ventilated, the protection circuits may

see

Installation Considerations on page 77).

system,

in-wall, in-ceiling, outdoor

try to specify 6-8 ohm speakers (Niles offers a com-

and

home theater loudspeakers with all mod-

51-1260

low

impedance

of

the 51-1260

is

not properly

see

Installation

of

with

Cable and Wire

Because the
important that you correctly label allofthe input cables and speaker wires. Label the

cables and wires
which they are connected. This
future.

The

51-1260
connectors.
noise and best overall performance.
cable.

A OB25 MultiZone Input Connector
Products which include a mating OB25 output connector. All
are included within the single connector, along
Input.

The

51-1260
applications,
than 80 feet, we recommend
5-way binding posts
to the wire

51-1260

connects to your sources via shielded line level audio cables with

Use

connects to your speakers using

we

will

has

many connections on the rear panel

with

their destination or source, rather than the 51-1260 terminal to

will

make it easier to reconfigure your system in the

high quality cables with your Niles amplifier for the lowest possible

Your

Niles dealer can recommend the proper

is

provided for

with

two

conductor speaker wire.

recommend you

will

accommodate up to 12-gauge wire. Attaching banana plugs

enable the connectionoflarger wire

use

16or18

14

gauge wire. The

gauge wire.

51-1260's

use

the

sizes.

(see

Figure

with Niles

12

dedicated inputs

51-1260's

For

wiringnns

high-quality, gold-plated

MultiZone

Voltage Trigger

13), it

For

most

longer

RCA

is

Using Mono for Smoother Coverage

In

large or irregularly shaped rooms, you may find that the main listening area may

of

be closer to one
amplifier you
create
of

no ill effects. Some

sound quality

•

• Irregularly shaped rooms.

• Bathrooms with one speaker over the tub and one speaker over the sink(s).

mono

the system.

Large

rooms

the speakers. Ifthe

will

only

hear half the music.

sound from one speaker without impacting the stereo quality in the

You

can configure each room to either stereo or monoasneeded with

of

the most popular

would

with

be:

many seating

speakers

areas

areas

and/or many pairsofspeakers.

in the room are connected to a stereo

The

51-1260's

where

mono

BusMatrix'" enables you to

will

greatly enhance the

rest

• Hallways or passageways

• Small rooms, such
required.

as

(including those with multiple speakers).

walk-in closets where more than a single speakerisnot

Bridging Channels for Areas that Require More

Volume and Power

There are several situations where bridgingisan
There are also applications where bridging

recommended. Bridging channels increases the power to 120watts per channel with

an

8 ohm impedance.

These

1.

2.

are someofthe most common DOs and DON'Ts:

Outdoors

the walls enclose the sound and reflect it back to the listener. A pair
playing into a large patio or yard

two

into

Surround

are much greater than the left, right or surround channels. This
application for

(DO)

- Sound dissipates faster outside than it does in a room where

120 watt channels.

Sound

Systems

two

channels to be bridged into one 120 watt channel.

(DO)

-

will

greatly benefit from bridging four channels

The

excellent way to improve the sound.

would

dynamic demands for the center channel

seem

to be appropriate butisnot

is

of

speakers

an

excellent

3.

More

way,
of
by using
amplifier channels into

than

one

often the best way to get good background musicisto install multiple pairs

speakers.

You

two

pair

of 8

ohm

speakers

will

actually deliver more power to

unbridged amplifier channels than you

two

and connected the

(DON'T)

-In

two

pairsofspeakers in parallel.

a large room or a long hall-

two

pairsof8 ohm speakers

wouldifyou bridged four

APPLICATIONS

Advantages of Using the 51-1260 in a Single Zone System

By

connecting a Niles 51-1260 to a stereo receiver's preamplifier outputs, you dedi-

Each

cate a robust 60 watts to each speaker in your multi-room system.
its

own level control, enabling you to compensate for architectural differences which

may

cause

systemsothat when allofthe room volume controls are

the
the large rooms and the small rooms play at the same volume.

one speakertoseem

louder than another.Inaddition, you can fine tune

set

to the loudest level,

channel

has

DSS

Niles VCS-2D

Volume Control

Room 1 Room 2

VCR

Preamplifier or

AM/FM receiver

SI-1260

0-

'YYYT

Tt,

Room 3 Room

Single Zone

CD

4

RoomS

Room 6

Figure

4 -

Single

Zone

II

Creating a Low-Cost Second Zone
Using a Dedicated Source

The

main problem in a single zone

in one room, you cannot listen to another source in another room simultaneously.

who

However, for a listener

ated to

allow

source. This

simultaneous CD listening while the main

is

possible onlyifthe CD player you are using

only listens to

one with remote controllable volume and the other a fixed volume.

Figure

5,

you connect the

CD

channel inputs for the particular room where you

is

output
the

(lRR-40, IRP-2+ and IRC-2)

connected to the main preamp or receiversoyou can also listen to CDs in

restofthe house. The finishing touchisto install a Niles infrared repeater

so

control from your CD listening room.

systemisthat when a sourceisbeing listened to

CDs,

a low-cost second zone may be cre-

systemisplaying another

has

dual audio outputs,

As

shown in

player's variable output to the

will

listen only to CDs. The fixed

you may adjust the

CD

player's volume via remote

(Fixed)

51-1260's

dedicated

IRC-2

system

for

(Variable)

CDs

BusMatrix'" Input

Niles VCS-2D

Volume Control

1 J

1----......

~~:::::=~~t-

81-1260

0-

ZONE 1 ZONE 2

Figure

5 -

low

tw"

Cost

Second

BusMatrix'" Input 2

Zone

I
I
I
I
I
I

I

I

Using a Dual-Zone Receiver for Two Listening Zones

Mostoftoday's Dolby Digital surround sound receivers include a second zone pre-

used

amplifier output
of

the

51-1260's

BusMatrix™

a second listening zone

to create a second listening zone. Using this output

inputs provides amplification for multiple rooms within

as

shown in Figure

6.

with

one

DVD/CD

CHANGER

I
I

VCR

ZONE 1 I

(Home Theater) :

I I

:_

~r~n~

~~e~k~~

BusMatrix'" Input 1

Niles

VCS-2D

Volume

Living

I (Unbridged Channels1-8)

L

Room

Control

Kitchen Exercise

__

S;~n!e~

~p_e~k~r

~r----------_----1

SI-1260

0--

..

""

..

Room

DSS

----

R~~

~e.e~':e~s

Hallway Patio I

Second Zone Output

_

~

Niles

VCS-2D

HP

Volume Control

(HP

= High

Power)

(Bridged

Channels

~~J~~l_~

I
I
I
I

I

I

I

I
I
I

:

Figure 6 - Using a Dual Zone Receiver

Adding Preamps

In

the ultimate MultiZone

single component multi-zone/multi-source preamplifier) to one

completely independent listening
in

six separate zones to simultaneously listen to different source components

shown in Figure

7.

To

Create More Listening Zones

system,

you would connect six stereo preamplifiers (or a

zones.

MultiZone

systems

51-1260,

creating six

enable listeners located

as

DSS

0-

AM/FM

TUNER

81-1260

""""

•

--------

I

--------~--------~--------~--------~--------~--------~

ZONE 1

II

--------

ZONE2

---~~---

ZONE 3

II
II
II
II
II
II
II
II
II

--------

ZONE 4

--------

I II

ZONES

DVD/CD

CHANGER

ZONE 6

III

Figure 7 - Creating More Listening Zones

Utilizing

the

Dual

BusMatrix™

Input

Many
51-1260's Dual
tem design.Asshown in
and second zone outputs connected to the 51-1260's Dual
inputs respectively.
six via
through twelve in the
1260 placing three rooms in Zone

MultiZone

dip

switch settings.

systems

BusMatrix™

Figure

Bus

Input

same

incorporate

multiple

rooms

within

a single zone. The

Input simplifies the connections required for this

8,

a Niles A4.6Ci

MultiZone

Controller

BusMatrix™

has
#1

#1isthen routed to amplifier channels one through

Bus

Input

manner. 5ix rooms can

#2isrouted to amplifier channels seven

now

be connected to the

#1

and three rooms in Zone #2. The remain-

sys-

its first

and

#2

51-

ing zone outputs on the A4.6Ci can be connected to another 51-1260 for more
zones.

,..-------,

I
I

I
I

I
I

I

I

ZONE 3

...

-------,

I I

I I

I

...

-------,

I I

I I

I

...

-------,

I I

I I

1

ZONE 6

-~

ZONE 4

o I

ZONE 5

o I

--'

..J

Niles A4.6Ci

BusMatrix'· Input 1

Niles

VCS·2D

Volume

Control

________________________

ROOM

1

ROOM
ZONE 1 ZONE 2

-----....-

2

Zones

CJ

ROOM

1-2/

-

AM/FM
TUNER

..

81-1260

JI

3

Zones 3-6

..,-----BusMatrix'·

•

ROOM

4 ROOM 5

81-1260

CJ

-

Input 2

-----'==--=::::1..-

•

o I

6 I

J

ROOM

I
I

I

I

I

I
I

I

I

I

I
I
I

Figure

8 -

Dual

BusMatrix'·

Input

CONFIGURING

The

51-1260

installation before starting. Start by drawing a block diagram
the Configuration Worksheet on page 29 to document
51-1260.
out according to the block diagram (figure

Figure 9

offers many configuration possibilities. Therefore, carefully plan the

Figure9,shown below,isan

YOUR

exampleofa Configuration Worksheet filled

SYSTEM

how

6)

on page

70.

of

your system and

you plan to connect your

use

Sample

BUS INPUTS & OUTPUTS CONNECTEDTO...
Left Bus Input # 1 Second Zone
Right Bus Input # 1
Left Bus Input # 2
Right Bus Input # 2
Cascade Output Bus # 1 Right
Cascade Output Bus # 1 Left
Cascade Output Bus # 2 Right
Cascade Output Bus # 2 Left

CH # BRIDGED

1
2

3

4
5

6

7

8

9

10
11
12

Configuration Worksheet

Second Zone

D

D

D

D

~

r;I

DIP

L1
R1
L1
R1
L 1 Bus

-----_.

R1
L1+R1
L1+Rl

Off

1---

L1

Off

R1

INPUT SOURCE SPEAKER

Bus

#1

Bus

#1

Bus

#1

Bus

#1
#1

Bus

#1

Bus

#1

Bus

#1

N/S N/S

- --

Bus

#1
N/S N/S
Bus

#1

Left

Right
N/S
N/S
N/S
N/S

N/S
N/S

Output

Output

Left

Living

Right

Left

Kitchen

Right

Left

Exercise
Right
Hallway
Hallway

--

Left

Patio

Right

Room

Living

Kitchen

Exercise

#1
#2

Patio

Room

Room

Room

--

MODE SETIINGS

Constant

Audio Sense

Voltage Trigger
Control Output

IN

USE

D

ri/

D
D

SPECIAL CONNECTIONS OR NOTES

INSTALLATION CONSIDERATIONS

Automating the turn-onofyour

in a distributed

AC

outletofyour preamplifier or receiver.
requires large amountsofcurrent from
recommended to activate the

51-1260

important

amplifier on only when it
On

Important!
any

concerning the Front Panel Power Switch).

in

Mode selector switch

of

the three turn-on options to function (refer to page

system.

order to prevent

needs,

The

Front

However, do not plug the main power cord into the switched

the

51-1260

Panel

51-1260isoneofthe

its

system

system

has

is

needed.

(see

Figure 10).

Power 5witch mustbein the

preamplifier/receiver before turning on your

"turn-on thumps".

three special turn-on

These

Turn-On Modes

The

Constant:

The

front panel
the amplifier. When the switch
is

"ON",

auto turn-on circuitryis"OFF".

master

when itisout, the ampis"OFF".

power switch operates

is

in, the amp

easiest

The

high power design

AC

power source. Additionally, itisalways

three options

TURN

MODE

steps

In

order to

modes

ON

D

§E

that let you turn the

are

accessed

(switch in) position for

23

for more information

ON

CONSTANT
AUDIO

3-30V AC/DC

-TRIGGER

when installing it

of

the

address

by the Turn-

SENSE

INPUT

51-1260

these

Audio
there

16 inputs, but the sensing circuitry

The

amount of audio signal present at any

audio inputs. If itdetects a signal, the adjacent
pair

3/4,5/6,

signal
amplifier channels "OFF".

3-30V AC/DC Trigger Input:
signal
such a voltage, all adjacent pairs
signal switch
ly switches the amplifier "OFF". Voltage triggers
ed
DC wall adapter
receiver.

Sense:

is

no audio signal presentatanyofthe

turn-on

of

amplifier channels (i.e. channel 7/2,

stops,

is

switchers,

The

amplifier

sensing

etc.)

assigned

the

not applied to the voltage trigger input. Once the sensing circuitry detects

"ON".

some

circuitry looks for a tiny

to receive the inputsignals

sensing

Once the voltageisremoved, the Voltage Trigger circuit instant-

video projectors,

(Niles FCD0665) plugged into the switched outlet

is

"OFF" when

is

active.

of

the

circuit waits approximately 2-minutes, then switches all

The

amplifieris"OFF" when a 3 to 30-Volt

of

amplifier channels that

some

surround sound processors, or a12Volt

Figure10- Turn-On Mode

will

may

switch

be

"ON".

are

supplied by Niles automat-

Oncethe audio

receiving

of

AC

or DC

an

audio

your stereo

If you
doesn't

Volt trigger increasing up to a minimum

are

using a wall adapter or external power supply to provide the trigger, it

havetobe

very large

(a

minimum current capabilityof2.5-milliamps for a 3

of38milliamps for a 3D-Volt trigger).

continued on page 1

7.

Attractive extruded

aluminum front panel.

Multi-color "Channel Pair"

LED

indicators

display channel pair on/off status,

and protection modes

/

51-1260

5Y5TEMS

INTEGRAl

N

AMPLIfIER

/

/

.

~

~

~

(C'~'"

CI-IANNHS

U""NNHS

n'ANNrlS

O

...

N"[lS

CH,o.NNHS

~I"OWUl

= = = = =

.-,

,-.

,.

.-.

':l·10

11·12

-

NILES

Red

"Power"

LED

confirms the amplifierisconnectedtoa live

AC

outlet and that the front panel switchison. Additionally, it indicates

any AC line voltage problems and main power fuse status

Figure

13

Front panel "Master Power"
switch turns off the entire
amplifier, including the auto

turn on circuitry.

Removable Two-prong

IEC

compatible

AC

power cord.

Gold-plated RCA jacks for

the dedicated inputs.

DB-25 input connector for simplified

dedicated audio and voltage trigger

connection using Niles MultiZone Products.

L----'"'~-#------

Serial Number.

Bridging switch for each channel

pair.

Level controls for each

channel.

BusMatrix··controls for each

channel.

"Turn-On" Mode Switch.

----tt-~'r

Cascade outputs of the
bus input enable you to daisy
chain multiple amplifiers.

3.5

mm

Jack for

3-30V AC/DC trigger input.

Gold Plated Dual Bus
Inputs, selectable

by

the

BusMatrix··, provide
enhanced input flexibility.

3.5 mm

Jack

for

12vDCControl Output.

(150

mA max)

Gold plated, dual banana plug

spaced, five-way speaker

binding posts.

continued from page

Placement

14.

CAUTION

A

damagetothe

Place the
placed
high-fidelity component,

proper cooling. When installing the

rearisopen to
are
the amplifier

If the cabinet's design
fans" to provide continuous air flow into and out

with

at

least 6 inchesoffree air space above the amplifier and 1 inch on

CAUTION!

A

Mode,

CAUTION!

51-1260.

A

The

51-1260isequipped

generates a powerful magnetic field that could induce a hum in a turntable

larlya turntable

directly above

I

Placing

51-1260

its

on a flat, level surface like a table or shelf.

weight equally distributed on the unit's four feet. This amplifier, like any

fresh

is

located on a carpeted surface, place a board under the amplifier's

When

less

than8ohms

00

equipped

or

directly adjacent to the

the

amplifier's

will

air

(see

will

not accommodate

using

NOT

block

with

with a moving coil cartridge).

51-1260's

weightonthe

rearorfront

panels

connectorsorcontrols.

The

51-1260

last

much longerifitisgiven adequate ventilation for

51-1260ina cabinet, be sure that the cabinet's

Figure

low

Bridged

11). Additionally, place the

an

open

rear,

of

the cabinet

impedance

Mode),

the

ventilation

a massive toroidal power transformer.

speaker

loads

refertoFigure12for

holesonthe

DO

51-1260.

51-1260sothat there

install

(see

(less

than4ohms

top

NOT place a turntable

two

Figure

proper

and

bottomofthe

This

will

cause

must

be

each

side. If

feet.

small "boxer

12).

Normal

placement.

transformer

(particu-

CAUTION!

capacityofthe

A

Make
of
amplifier and

proper ventilation.

sure

6"

offree air

•

Before

Figure

that thereisa minimum

placing

shelfis70

11

space

above the

1"

on each side for

the

Ibsorgreater.

;!Y&Ii!Y&li~

•

51-1260ona

shelf,

verify

Figure

Boxer

Fan

•

I I

(105 CFM)

6"

directly centered
on topofthe 51-1260.

that

the

12

weight

Boxer
directly centered
behind the 51-1260.

.

, !

Fan

(105 CFM)

~

bearing

2"

Allowaminimum
behind the unit to accommodate
cables and connectors.

of2"of

depth

If the cabinet rearisnot open to fresh

or

if

air

loads, install
vide continuous air
of

your using

the cabinet.

low

impedance

two

"boxer fans" to pro-

flow

into and out

INSTALLATION

Line

A

amplifierchannels in the "bridged"
mode, assign the audio signal
amplified to the EVEN numbered
amplifierchannel using the
Dip Switches.

Level

Cautio~!

connections.

STEP DESCRIPTION

1. Correctly label
cables

2.

Connect
RCA

connectors
inputordedicated
51-1260's rear panel.

NOTE: When you are using two

Audio

The

amplifier

the

interconnecting

coming

the

from

sourcesbyinserting

into a BusMatrix™

input

Inputs

must

be

each source.

jack

on

to

be

BusMatrix™

off

whenever you make changestothe

Use audio patch cables terminated
RCA

connectors.

the
the

Connect outputs from your source compo­nents to the input jacks on the amplifier.
NEVER
input
inputs.

connect a preamplifier or source

(e.g., record inputs) to the

input

with

51-1260

Cascade

Audio

Outputs

The "Cascade Audio Outputs" enable you to connect additional amplifiers to your
preamplifier's output. Connectionisaccomplished

are

cables. The outputs
you

will

need a Niles AVDA-3 buffered distribution amplifier. A single AVDA-3

not buffered; to daisy chain more than five Niles amplifiers

enables you to daisy chain five amplifiers from each

51-1260
amplifier
more than one

AC

STEP DESCRIPTION

1. Plug
power
120 Volt, 50-Hz wall outlet.

A

power amplifiers to

has

a vacuum tube output

be

fed from the

51-1260.

Power

the

cord

CAUTION! DO NOT PLUG THE
51-1260'S POWER CORD INTO A
PREAMPLIFIER'S CONVENIENCE
OUTLET.

Plug

51-1260's attached 2 prong

intoacorrectly

grounded

stage,

same

you must

If you
protector,
proper ground

1.

The

890 watts from
much more than the typical accessory
outlet on a component's rear panel can
provide.

with

standard

of

three outputs.

RCA

interconnect

This

allows

master preamplifier. If your pre-

use

a Niles AVDA-3 to drive

use

a grounded power strip, surge

or

extension cord, verify that the

is

maintained

51-1260 draws a maximumofabout

an

AC

wall outlet.

This

15

is

Use

2.

the
to switch
preamplifier

51-1260's

"ON"

is

"ON".

auto turn-on circuitry

the

51-1260

when the

Speaker

Wire

Connections

A CAUTION!

All

speaker wire connections must be made with the amplifier

Figure

14 -

~~~

__

Binding

------:::7

Posts

Banana Plugs

There
banana plugs available.
Some
the speaker wire and
some
offers banana plugs that

have a quick-connect
binding system for the

speaker wire included

within the banana plug
itself. After the wire is

attached, the banana plug

is
hole at the end of the

amplifier's speaker bind-

ing post. Dual banana
plugs will fit the SI-1260
binding posts.

are

many types of

are

are

simply inserted into the

OFF.

crimped onto

soldered. Niles

Bare Wire

Unscrew the
knobs and insert the bare wire
through the hole
Tighten the knob until the wire is
securely clamped.

STEP

1.

Label all wires.

2.

Connect one stripped wire end
banana plugtothe
and one

CAUTION! NOT EVEN A SINGLE

A

STRAND OF WIRE CAN BE
ALLOWED TO TOUCH THE
AMPLIFIER CHASSIS OR

ANOTHER CONNECTOR.

red

or black plastic

in

to

the

red

the post.

black

tenninal

tenninal.

or

all

wires connecting to

If

labeled with their destination
their specific connectiontothe
will

be

easiertoreconfigure

the

future.

A.

Split

the

speaker

2

inches.

B.

Strip

1/2

inchofinsulation from

speaker

C.

strandsofeach
into

wire conductor.

Attach

the

appropriate

banana

wire insulationatleast

plugs

conductor

51-1260

the

the

or twist

and

binding

51-1260

rather

51-1260,

system

the

insert

post.

are

than

it

in

each

wire

them

BusMatrix

Ti

'

Input

DIP

Switch

Settings

Each channel has a
nel's source
nal

foraparticular

1L

is

for the assignmentofthe Left

1R

is

for the assignmentofRight

1L+1R

2Lisfor the Left
2Risfor the Right
2L+2Risfor a summed mono signalofthe Left and Right
The

seventh switch

Again,
should

input

is

for the assignmentofa summed mono signalofthe Left and Right

only one

be

configured

dedicated

signal

channel,

Bus

Input

Bus

assigns

of

the

BusMatrix'·

(see

Figure 15).

set

only one

DIP

Switch

Bus

Bus

Input

1t2

Input

1t2

the dedicated input to

seven

to

the

DIP

liON"

DIP

To

assign

of

the seven switchestothe

Settings

Input

1t1

Itl

switches

position

switch

the

its

respective channel

"OFF"Position

(switched to the right).

bank

that assigns that chan-

BusMatrixmsource

right.

Bus

Input

1t2

"ON" Position

I

B

U

s

L

input

Bus

Input

lL

lR

1L+1R

2L
2R
2L+2R

1

sig-

#1

Figure15- BusMatrix'·

STEP DESCRIPTION

1.

Move
"ON"

only

one

position

(1)

for

DIP

switchtothe

each

channel.

CAUTION! EACH DIP SWITCH

A

ALLOWS YOU TO MOVE
SEVEN SLIDE SWITCHES TO

"ON"

THE
SET MORE THAN ONE SLIDE
SWITCH TO
CREATE AN UNDESIRABLE

MIX

OF INPUTS ON THE

ENTIRE BUS.

DIP

ALL

POSITION. IF YOU

"ON"

YOU MAY

Switches

Bridging

The

51-1260's

nel

by

combiningor"bridging"

Figure

16-

Channel Bridging Switch

'TWo

bridging

Channels

switches

and

allow

l\.vo

DIP Switches

into

One

youtocreateamore

powerful amplifier

adjacent amplifier channels together into one.

Figure

Bridged Channel Connedions

17-

chan-

...

NORMAL/BRIDGED.....

Slide the bridging

switch in the direc-

of

tion
bridge

amplifier channels.

Set the controls

the

pair by using the

EVEN

the arrow to
two

adjacent

newly bridged

numbered

of

channel.

STEP DESCRIPTION

1.

Choose which

wish

to

bridge

switch
position (toward arrow). and 2,

A

for

CAUTION!
SPEAKER
4

OHMS

NEL.

of

the

six pairs you

and

move

that

pairtothe

DO

NOT

CONNECT

LOAD

TOABRIDGED

OF

LESS

the

bridging

"Bridged"

THAN

CHAN-

The

12

channels aTC grouped into 6 pairs

(e.g.

1 &

2).

Only

pair

can be bridged.

Of

channels 3 and 4 could
bridged. Channel 2
cannotbebridged.

Each

A

bridged channelisdesigned

ohm

minimum load. Connecting multiple
speakers to a single channel, creating a
nominal impedance0(less th;m 4 ohms
may cause the 51.1260 to go into protection
mode

orbedamaged.

When

bridged

speakers to the

two

together.

labeled "Bridged".

A

the

two

channels within a

Thus,

only

and

3 are not a pair

channels are

connect

two

terminals

channels 1

and

for

I:X!

a 4

Connect

2.

two

(BRIDGED+, BRIDGED-). Carefully

observe

CAUTION!

A

HEADPHONE
THE

CHANNEL

Use

3.

switch

adjustments

bridged channel.

the

bridged

the

polarity

OUTPUT

the

EVEN NUMBERED

bank

and

speaker

speaker

DO

NOT

JUNCTION

OF

PAIR.

level control

and

wires

markings.

CONNECT

A BRIDGED

configuration of a

to

the

terminals

A

BOX

TO

BosMalr;,,'

to<

the

Connect the speaker wires10Ihe
cent amplifier channel's

NOTE:

BlACK
amplifier.

These
pair will

or

When
ensure

switches are allinthe "OFF" position.

If

oneofthe speaker wires touches a

terminal,

connectionstoa bridged

poor

cause

quality

two

that

either

sound.

channels

the

RED

you

will short-circuit the

thermal shutdown

are

bridged into one,

numbered

odd

two

terminals only.

channel

adja·

DIP

Setting

The

51-1260

mode switch to the proper position.

Figure 10 for more information about each of the turn-on modes.

the

Turn-On

has

three (3) turn-on modes. Select the desired mode by sliding the

Mode

See

Switch

Installation

Considerations on page

74

and

Figure

The

As
plug output jackonthe rear panelofthe
provides a 12V DC trigger signal. Itissuitable for
triggering Niles automated switchers, some
motorized
and other devices that require a constant 12V
DC control voltage for activation.

18

~---

AUDIO

'-------'--TRIGGER

3-3QV

SENSE

AC/DC

INPUT

Slide the switch with either your fingernail
or a 1/8" slotted screwdriver blade.

Control Output

shown in Figure 19, a 3.5 mm female mini-

51-1260

screens

and electric curtain controls

RN

oN

Using

Figure 19 -

the

3.5 mm jack

is

This voltage
amplifier channels
amplifier channels
"OFF" .

STEP

1.

Check
device

Connect

2.
control
polarity

provided only when anyofthe

the

requirementsofthe

you

wanttocontrol.

the

3.5mm

output

(tip =

are

active or

are

"OFF", the 12V signal

jacktothe

maintaining

+)

"ON".

proper

When all

is

DESCRIPTION

The

control output provides 150 mA

current maximum.

Niles makes

(FC00724).

@~~

~

an

accessory cable plug

~

of

OPERATION

Front Panel Power Switch

The

51-1260's
toggles between the
ON

position to enable the amplifier to activate

(see

page

consumption while you
you

would

Power LED Indicator

The 51-1260 features a bi-colored
amplifier:

master power switchislocated on the front panel.

ON

(switch in) and the OFF (switch out) position. It must be

14).

If you

are

going on vacation

are

away,

set

the master power switch to the

like to return to normal operation,

POWER

regardless

aneVor

set

the switch back to the

LED

indicating the power

of the turn-on mode selected

would like to reduce power

Pressing

OFF

position. When

ON

position.

status

the switch

in

the

of

the

POWER LED

OFF

Solid Yellow

Solid Red

Fast Red Blinking

(Three

Times

Per Second)

Slow Red Blinking

(Once Every Three Seconds)

STATUS

Amplifierisnot plugged in to a live
The amplifierisplugged into a live

is

OFF

power switch

The

amplifierisplugged into a liveACoutlet

is

ON

switch
TheACline voltageisabove or below the normal 120V

This

will

Normal operation resumes once the
to 120V AC.

Internal defect.
service.

(in

cause the amplifier to turn off.

(out position).

position).

The

amplifier shouldbereturned to Niles for

AC

outlet.

AC

outlet and the main

and

the main power

AC

line voltage returns

AC.

Channel Pair LED Indicators

The

51-1260

that indicate the following:

incorporates individual multi-colored

LEOs

for each channel-pair

CHANNEL

PAIR LED STATUS

OFF

Solid

Green

Fast

Red

Blinking

(Three Times

Slow

(Once Every Three Seconds)

Solid

Red

Red

Per

Second)

Blinking

The channel

The channel

Indicates a possible short circuit or
Speaker
fier's speaker terminals and/or a damaged speaker wire
a short circuit. More than three pairsof8 ohm
to the

same
low impedance. Bothofthese conditions
cator to
necting a proper speaker impedance load
pair to resume normal operation.

Indicates the channel
ventilation. Providing proper
eliminate this

amplifier placement details).

Thereisa damaged internal component in this channel pair
module.

pairisOFF.

pair

is

active and operating normally.

low

impedance condition.

wire

strands

amplifier channel present the amplifier channel with a

blink

red

The

amplifier should be returned to

that

are

touching at the speaker or the ampli-

can

speakers

will

cause

the

very quickly. Eliminating the short circuitorcon-

will

enable the channel

pairisoverheating due to inadequate

problem

airflow

(refer to page

to the

75,

amplifier

figures77and72for

Niles

for service.

cause

attached

LED

indi-

will

Using Level Controls as Limiters

Using the individual level controls, the

of

level for each
be calibrated
of

size and acoustics and to establish a maximum volume level. Thisisespecially

if

useful
stereo too loudly.

Calibrate your

1.

Adjust allofthe

are any other amplifiers in the system, adjust their level controls to the minimum.

(Allofthe amplifiers in your system must have level controls).

2.

Adjust all individual in-wall volume controls to the loudest setting (fully clockwise).

3.

Playa loud radio station.

4.

Increase the preamplifierorreceiver's volume up slowly. If you hear any sound,

lower the preamplifier's volume again and recheck all amplifier levels, they must
be
up, proceed to

your systemisremote controlled, orifsomeofthe

at minimum. If no soundisheard when the preamplifieristurned all the way

the different rooms connected. Individual room volume levels can

so

that all rooms have similar volume control characteristics regardless

system's

volume levels using the

51-1260's

step

level controls to the minimum volume position.Ifthere

five.

51-1260

enables you to

steps

outlined below:

set

a specific volume

users

like to play the

5.

Have someone

51-1260

the

6.

Adjust the volume for

listening position in

to the desired maximum level for that room.

step

into each room and listenasyou adjust each level control on

each

channel to achieve a good balance from the most

each

room.

used

Listening

An outputof60 wattsisadequate power to completely drown out conversation in
a normal sized room.
Obviously, it requires more power to achieve a reasonable volume

large room than it does in a small room.
possible to turn the volumesohigh that the amplifier runs outofpower.
ates

"clipping"

at

Higher Volumes

Even

at those levels, the

distortion.

51-1260

Evenifyou are normally very careful, it

will

sound clear and clean.

of

soundina

This

cre-

is

Clipping distortion makes treble sound very harsh and unmusical. If you hear
sounding treble from any
the channel pairs connected to those
ful high frequency sound spikes that
speaker.

If you continue to operate the amplifier at "clipping" power levels the protection

will

circuits
tions have returned to normal. Perpetually over-driving your speakers and amplifier
is

abuse and

operate. The protection circuits

will

void the manufacturer's warranty on all affected products.

speakers,

immediately turn

speakers.

will

quickly damage the tweeterofany loud-

These

will

down

reset

when output signal condi-

the level controls for

harsh sounds include power-

harsh

Cleaning and Maintenance

The internal parts
Once
oxidation and improve conductivity.

You

DO

a year itisappropriate to twist each

can clean the amplifier with soft c'oth or a paper towel dampened with water.

NOT

use

any spray-type or

of

the 51-1260 are electronic and require no maintenance.

abrasive

input

cleaners

on

RCA

the

connector to remove any

amplifier.

TROUBLESHOOTING GUIDE

When a problem occurs, consult this guide first. If the problem persists, or you
have additional questions, call your local Niles dealer or call Niles Technical
Support at

1-800-289-4434.

Have your configuration worksheet handy when you call.

The

most common problems are related to hook-up.

SYMPTOM

Very low ornosound on
one channel.

No sound on one channel
pair and channel pair LED
quickly blinking red.

is

POSSIBLE

1.

BusMatrix'· DIP switchisnot in the correct position.
Check your configuration worksheet and verify all
settings.

2.

Audio cable to the inputisbad. Connect the non­working channel to a cable known to be good.

3.

Bridging Switchisin wrong position. Check your con­figuration worksheet for the correct setting and

1.

Check that connections are secure and that there
no loose
to the negative terminal at the backofthe amplifier
and/or the

2.

Disconnect the speaker wire at both ends;
the 2 conductorsatboth ends and
for a short circuit. If there
two conductorsatone end and test for continuity.

3.

Verify that

speakersisnot
channel

CAUSES

strandsofwires crossing from the positive

and

AND

TEST

PROCEDURE

speaker.

test

is

no short, connect

the

impedance load

less

than 2.66 ohms withanunbridged

of

the connected

4 ohms with a bridged channel.

separate

with a meter

verify.

are

the

No sound on one channel
pair and channel pair LED
slowly blinking red.

No sound on one channel
pair and channel pair LED
solid red.

The

amplifier module

ventilation or prolonged operationatclipping

is

1.

Turn

the amplifier off and

to cool.

2.

Check to ensure that thereissufficient ventilation for
the

amplifier. After a reasonable time

turn the amplifier back on and check the

3.

Lower the level controls for that channel pair.

The

amplifier module requires service.

is

Contact your Niles dealer for service information.

has

overheated due to inadequate

allow

levels.

the internal circuits

has

passed,

LED

again.

SYMPTOM

Very

loworno

sound on

someorall channels.

POSSIBLE

1.

Bridging Switchisin wrong position. Check your con-

figuration worksheet for the correct setting and verify.

2. Audio cable to the input
known to

CAUSES

be

AND

TEST

PROCEDURE

is

bad. Connect a cable

good to the non-workingchannel.

Hum from all

of

the speakers.

Soundisdistorted on one
more channels at

nonnal

volume.

No

soundonany channels

and

power

LED is

slowly

blinking.

Hum

canbecaused due to a ground potential differ-

ence between connected components

to

antenna or cable TV feeds).

system,

the

AC

plugofcomponents with non-

AC

receptacle using a Ground

are

not in the correct position(s).

LEDisYellow, then the channel

The

channel volume level should be

hasaninternal defect requiring service.

or

connected

1.

Check for faulty cables; faulty source signals;
ungrounded phono
defective component.

2.

Reverse

polarized plugs.

3.

Test

the

1.

DIP switch(es)
Check the worksheet and verify all settings.

2.

If the channel pair
being overdriven (volume set too high on the pream-

plifier).

calibrated to avoid this condition (refer to page 25

for information on Using Level Controls

Amplifier
Contact your Niles dealer for service information.

(especially those

an

cable feed, and/or a

Tester.

re-

as

Limiters).

is

Bass is

weak

and stereo

soundis"phasey".

A speaker connectedtoa
bridged
channels

pairofamplifier

sounds

weak.

1.

Check that the Bridging Switchis"OFF".Iftwo
cent channels

ing switch

speakers

2. The

speakers

reverse

and
speaker

Check that the Bridging Switchis"ON".

are

connected normally but the bridg-

is

set

to the

"BRIDGED"

will

be outofphase.

are wired outofphase. Recheck polarity

the connections on the backofone

if

necessary.

position, the two

adja-

CONFIGURATION WORKSHEET

BUS

INPUTS & OUTPUTS CONNECTED

Lett Bus Input # 1
Right Bus Input

Left

Bus

Inp::",-,

Right Bus Input # 2

# 1

#::..::2

-+

_

TO

Cascade Output Bus # 1 Right

Cascade
Cascade
cascade Output

CH

3

4

5
6

1

8

--

9
10

11

12

Output
Output

# BRIDGED

1
2

0

0

0

0

0

-

0

Bus

# 1

Left

--1---------_·-

Bus

# 2

Right

Bus

# 2

Left

DIP

--

1---

INPUT SOURCE SPEAKER

--

-

MODE SETTINGS

Constant

Audio Sense

Voltage Trigger

Control

Output

-t-':::C"-f----------------/

-I-

IN

D

D

D
D

USE

SPECIALCONNECTIONSORNOTES

SPECI

Design Principle

Linear voltage/current amplification.

Continuous Power Output (FTC Rated)

(Unbridged, all channels driven) 60 watts per channelat8 ohms, 80 watts per
channel at 4 ohms.

Bridged Power Output

(Adjacent channels bridged, all channels driven) 120 watts per channel at
8 ohms.

Input Impedance

47K ohms

Input Sensitivity

.77Volts for 8 ohms at

Overall Voltage Gain

32

dB

FICATIONS

rated

output

Frequency Response

Bandwidth Limited from 5Hz to 50kHz

Distortion

(Normal mode)

0.06%

0.06%

(Bridged mode)

0.06%

Overall Dimensions

1711wide

Weight

73

THO
THO

THO

pounds

20Hz
rated

20Hz

by 7.511high (including

to 20kHz all channels driven(8ohms)

20Hz

to 20kHz all channels driven(4ohms)

to 20kHz all channels driven(8ohms)

feet)

by 19" deep.

II

IMPORTANT SAFETY INSTRUCTIONS

The lightning flash with arrowhead symbol, within
equilateral triangle, is intendedtoalert the usertothe

A~.

CAUTION:

THE

RISK
SHOCK,
COVER.
ABLE

PARTS
SERVICING
SERVICE

1.

Read these instructions.

2.

Keep these instructions.

3.

Heed

4.

Follow all instructions.

5.

Do not use this apparatus near water.

6.

Clean only with a dry cloth.

TO

OF

ELECTRICAL

DO NOT

NO

USER-SERVICE-

INSIDE.

TO·

QUALIFIED

PERSONNEL.

all

warnings.

REDUCE

REMOVE

REFER

presence
product's enclosure that may be

to

Warning:Toreduce

The exclamation point within an equivalent triangle is

intended
operating and maintenance (servicing) instructions
literature accompanying the appliance.

of

uninsulated dangerous voltage within the

constitute a riskofelectric shocktopersons.

the

apparatustorainormoisture

to

riskoffireorelectric

alert the usertothe presence of important

of

sufficient magnitude

shock,donot

expose

7.Donot block any ventilation openings. Installinaccording with the manufacturer's instructions.

8.

Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.

an

this

in

the

9.

Do not defeat the safety purpose of the polarized or ground plug. A polarized plug has two blades
with one wider than the other. A grounding-type plug has two blades and a third grounding prong.
The wide blade is provided for your safety. If the provided plug does not fit into your outlet, consult
an

electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plug, convenience
receptacles, and the point where they exit from the apparatus.

11

. Only use attachments/accessories specified by the manufacturer.

12. Use only with a cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use
caution when moving the cart/apparatus combination

to

avoid injury

from tip-over.

13. Unplug this apparatus during lighting storms or when unused for long
periods of time.

14. Refer

all

servicingtoqualified service personnel. Servicing is required when

the apparatus has been damaged

in

any

way,

suchaspower-supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does not operate normally, or has been

dropped.

15. Apparatus shall not be exposed to dripping or splashing, and no objects filled with liquids shall be
placed on the apparatus.

©2005

Niles Audio Corporation. Because Niles strives to continuously improve its products, Niles reserves the right to change product specifications

without notice. Niles and the Niles logo are registered trademarks

of

Niles Audio Corporation. PrintedinMalaysia. DS00407BMY

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-

WARRANTY

Niles

Audio

Corporation

Customer Service Department

P.O.

Box 160818

Miami, Florida 33116-0818

AND

REGISTRATION

Place

stamp

here

CARD

CONGRATULATIONS

ON

YOUR

OF

A

NILES
PROPERLY
AND

OPERATED,
NEW
WILL

GIVE

TROUBLE-FREE

NILES

PURCHASE

PRODUCT.
INSTALLED

PRODUCT

YOU

YEARS

YOUR

USE.

_NILES.

www.nilesaudio.com

OF

Niles Audio Corporation ("NILES") war-

rants its passive products (those not
requiring

AC

or

original purchaser

turing defectsinmaterial and workman­ship for a period
of purchase.

Niles Audio Corporation ("NILES'? war-

rants its passive loudspeaker products
(those not requiring AC
to

the original purchaser

manufactUring defects in material and

workmanship for a periodoffive years

from dateofpurchase.

Niles Audio Corporation ("NILES") war-

rants its
to

the original purchaser
manufacturing defects in material and
workmanship for a period

from dateofpurchase.
Niles Audio Corporation ("NILES") war-

rants its active products (those requiring
AC

or battery power) to the Ori9inal pur-

chasertobe

defectsinmaterial and workmanshi p for

a periodoftwo

chase.

This Warranty is subjecttothe following
additional conditions and limitations.
The Warranty is void and inapplicable if

NILES deems that the product has been

usedorhandled other than in accor­dance with the instructions provided by
the manufacturer, including

battery power)tothe

tobefreeofmanufac-

of

ten years from date

or

outdoor

loudspeaker products

freeofmanufactUring

years from dateofpur-

battery power)

tobefree

tobefree

of

two

years

but

not

limit-

LIMITED

ed

to

damage caused by accident, mis­handling, improper installation, abuse,
negligence,

any defect causedbyrepair to the prod­uct

by anyone other than NILES or

authorized NILES dealer.

To

obtain warranty service, take the unit

to

the nearest authorized NILES dealer,

who

will test the product and if neces-

sary, forward it

of

are

there
your area, you must write
include your name, model and serial
number

description
Return Authorization

senttoyou. DO NOT RETURN ANY

of

UNIT WITHOUT FIRST RECEIVING
WRITTEN AUTHORIZATION AND SHIP­PING INSTRUCTIONS FROM NILES.

If the above conditions are met, the pur­chaser's sole remedy shall

the product
NILES will repair

option, the defective product without

charge for parts or labor. NILES will

return a unit repairedorreplaced under
warranty by shipping same by its usual

shippin9 method from the factory (only)

at its expense within the United States

America. THERE ARE NO OTHER
WARRANTIES, INCLUDING WITHOUT
LIMITATION, EITHER EXPRESS OR
IMPLIED WARRANTIES OF
MERCHANTABILITY

Detach this portion and keep for your records.

WARRANTY

or

normal wear and tear,

to

NILES

for

no authorized NILES dealers in

of

your

unit, along with a brief

of

the problem. A factory

to

NILES, in which case

or

service. If

to

NILES and

Number

will be

betoreturn

replace, at its sole

OR

FITNESS FOR

A PARTICULAR PURPOSE, WITH

RESPECT TO THE PRODUCT.

or

REPAIR OR REPLACEMENT AS
PROVIDED UNDER THIS WARRANTY

an

IS

THE EXCLUSIVE REMEDY OF THE

CONSUMER/PURCHASER
SHALL NOT BE RESPONSIBLE FOR
ANY INCIDENTAL OR CONSEQUEN­TIAL DAMAGES EXCEPT TO THE

EXTENT PROVIDED

BY APPLICABLE

Some

statesdonot

or

limitationofincidentalorconsequen-

tial damages, so the above limitation

may not apply
gives you specific legal rights, and you

may also have other rights which vary
from state

For

the

authorized NILES dealer, contact:

NILES AUDIO CORPORATION

P.O,

BOX 160818, Miami, Florida 33116.

-

----------

Serial

No. _

of

Purchase

(OR

LAW.

allow the exclusion

to

you. This warranty

to

state.

nameofyour

Date

_NILES~

NILES

PROHIBITED)

nearest

PLEASE

(Please Print Clearly)
Model

Purchased _

Serial No. (Ifapplicable) _

Date Purchased (month/day/year) _

Dealer

Name

and

Location

o

DR.

o MISS

Name

Address -'--- _

City

Daytime phone Evening

Email address _

Please

takeamomenttofill

know

you

better

and develop the

Age:

o Under 25

025-34
035-44
045-54
055

& over

Income:

o Under $24,999
o $25,000-$34,999

0$35,000-$44,999
0$45,000-$59,999
0$60,000-$74,999

o $75,000-$99,999

DOver

$99,999

Occupation:

o ArtslEntertainment
o Business Owner

o Engineer

o Finance/Account.
o General Office
o Management
o Professional
o Sales/Marketing
o Student
o Tradesperson

What magazines

1.

2.

3.

do

REGISTER

OMR.

you read?

_

_

YOUR

o MRS. OMS.

out

our

warrantyregistration card.

products

Musical
(please check all that apply)

o Alternative
o Classical
o Country
o Jazz
o New Age
o Popular

OR&B

o Rock

o Other _

How

o ArchrtectiDeveloper
o Custom Installer

o Direct Mail

o FriendIFamily
o In-Store Display
o Interior Designer
o Magazine Ad
o Mail-Order Catalog
o Newspaper Ad
o Product Brochure

o Product Review

o Retail Salesperson

Who

o Custom
o Electrician

o Friend
o Myself

did

will

you want.

tastes:

you

install

AN

hear

the

Installer

NEW

phone,

about

product?

-,-

Niles?

NILES

State

__

PRODUCT

Zip

-'---

The

infonnation

Which factor(s) influenced

purchaseofyour
product?

(Please check

o Ease

of

o Made in the USA

OPriceNalue

o Product Features
o Quality/Durability
o Reputation
o Style!Appearance
o Warranty

o Own a House. If yes, how

Use

Doyou

...

many square feet?

o Own a

Town

Condominium/Co-op

o Rent

an

o Rent a House

Are

you

interested
receiving
other

Niles

DYes

ONo

What

products/capabilities

would

you

opedinthe

----'=---

helpsusget

Niles

all

that apply)

?

Housel

Apartment

in

literature

on

products?

liketosee devel-

Mure?

_

_

__

_

to

the