Bose 901 Series III Owner's guide - Page 8

Installion

S

B.

CONNECTING

THE

SPEAKERS

1.

Wire

Selection

If

the

wire

used

to

connect

the

speakers

to

your

power

am-

plifier

has

too

much

resistance,

audible

coloration

of

the

sound

and

loss

of

power

can

result.

The

table

below

summar-

izes

maximum

wire

lengths

for

18-,

16-,

and

14

-gauge.

two

-

conductor,

stranded

copper

wire

for

use

with

one

or

two

pairs

of

BOSE

901

loudspeakers.

TABLE

1

RECOMMENDED

CONNECTION

WIREt

Wire

Length

One

Pair

of

901s

Wire

Length

Two

Pairs

of

901s

Type

of

Speaker

Hook

-Up

Wire

27

feet

.

_

.

42

feet

67

feet

13

feet

21

feet

34

feet

18

-gauge

zipcord

(or

two

-conductor

wire)

16

-gauge

two

-conductor

wire

14

-gauge

two

-conductor

wire

In

most

instances,

copper

zip

-cord,

readily

available

at

most

electrical

and

hardware

stores,

can

be

used

for

speaker

con-

nection.

This

wire

usually

has

a

ribbed

line(s)

along

one

side

of

the

insulation

so

that

each

wire

can

be

identified

for

proper

phasing

of

your

speaker

system.

sin/Willi,

tattle

I

Niel

a

GA:Waled

on

VIC

Oast;

ci

a

Illamnen

andlbte

Mk/fallen

ol

1 0 5

dl

I I

'Mwing

Ole

guillotines

pantided.

the

nrnl

Olsculoold

le

twN.r

win

be

unable

lo

cleimt

any

colixakun

introduced

by

the

speaker

wire

Mml

listeners

will

lid

flUIICe

any

elk,'

A

well

rl

wee

lengths

ate

increased

by

as

n

loch

as

5thee

8

2.

Phasing/Wiring

It

is

important

that

the

amplifier

connections

for

both

901

speaker

systems

be

identical

(see

Figure

3)

so

that

both

speakers

work

together

(in

phase).

a.

Start

with

the

speaker

marked

"Part

1."

b.

Place

it

on

the

left

side

of

your

room

facing

the

speaker

system.

c.

Locate

the

"+"

and

"—"

terminals

on

the

bottom

of

the

speaker.

d.

Using

the

speaker

wire

(which

is

marked

to

distinguish

one

conductor

from

the

other),

connect

the

"Part

1"

speaker

terminal

marked

"—"

to

the

terminal

marked

"corn."

"negative,"

or

"minus"

on

the

left

channel

ampli-

fier

output.

(When

connecting

the

901

Series

III

loud-

speakers

to

your

amplifier,

if

there

is

a

choice

of

impe-

dances

on

the

amplifier

output,

use

the

terminal

marked

"8"

or

"8

ohms."

If

two

pairs

of

901

Series

III

loudspeak-

ers

are

being

connected,

the

terminal

marked

"4"

or

"4

ohms"

on

the

receiver

or

amplifier

should

be

useditt

ft

Note

When

apemen°

your

901s

in

Stereo.

Only

one

equalizer

is

required

II

addi-

tional

pairs

of

901s

are

used,

they

Can

be

purchased

without

the

equalizer

These

speakers

are

sold

as

'

add

on"

pairs

and

can

be

connected

as

extension

speakers

or

used

at

addition

lothe

first

pair

of

speakers

WILiouwinistaxj

Iwo

pairsof901

speakers

to

your

equipment

wife

the

speakers

in

I

tianuluctuted

receivers

or

alValets

wdl

operate

Iwo

pairs

of

90

Is

wins'

in

Iles

Illannef

I

lo

wever.

d

your

receive/

Of

aim/Shut

is

not

Callkli/k!

of

4

olun

/*elation

wtlh

Iwo

Oc/IIS

ol

9015,

wire

the

speakers

in

series

Cailacl

your

dealer

d

ally

ROOM

as:a:JaiICU

IS

legmrud

Bose 901 Series III Owner's guide - Page 8

Phasing/Wiring

Page 8 highlights