Bose Model 501 Loud Owner's guide - Page 6

Installation

Instructions

B.

CONNECTING

THE

SPEAKERS

1.

Choosing

The

Correct

Wire

II

is

important

to

choose

the

correct

wire

size

for

your

speaker

system.

If

the

wire

used

to

connect

the

speakers

to

your

amplifier

is

too

small

(has

too

much

resistance).

audible

coloration

of

the

sound

and

loss

of

power

can

re-

sult.

The

table

below

specifies

the

correct

wire

gauge

necessary

for

various

wire

lengths.

Copper

zipcord.

read-

ily

available

at

most

electrical

and

hardware

stores,

can

be

used

for

speaker

connection.

Normally,

this

wire

will

have

a

ribbed

line(s)

running

along

one

of

the

conductors

so

that

each

wire

can

be

easily

identified

for

proper

phas-

ing

of

your

speaker

system.

RECOMMENDED

CONNECTION

WIREt

Maximum

Wire

Length

Wire

Gauge

15

feet

18

-gauge,

zipcord

(or

two

-conductor

wire)

23

feet

16

-gauge,

two

-conductor

wire

36

feet

14

-gauge,

two

-conductor

wire

f

The

wire

lengths

shown

in

the

table

a

)ove

were

calculated

on

the

basis

ol

a

maximum

audible

coloration

ol

0.5

c

0.

Following

the

guides

vies

provided.

the

most

discerning

listener

will

be

um

btu

to

detect

any

coloration

introduced

by

the

speaker

wire

Most

listeners

will

not

notice

any

effect

even

d

wire

lengths

are

increased

by

as

much

as

50%

6

2.

Wire

Connection

and

Proper

Phasing

It

is

necessary

to

follow

the

next

procedure

carefully

to

assure

that

both

speakers

are

properly

connected

and

phased.

(See

Figure

3.)

a.

Strip

approximately

1/2

inch

of

insulation

from

each

end

of

the

wires.

Make

sure

that

there

are

no

loose

wire

strands.

b.

Place

the

"Part

1"

speaker

(identified

by

the

rear

label)

on

the

left

side

of

your

room.

Next,

locate

the

"Pos"

and

"Com"

connection

terminals

on

the

rear

of

the

speaker.

c.

Connect

one

conductor

of

the

speaker

wire

to

the

ter-

minal

marked

"Com"

on

the

speaker.

(The

wire

may

be

identified

by

a

ribbed

line(s)

on

the

insulation

or

by

the

color

of

the

wire.)

Next

connect

the

other

end

(of

the

same

wire)

to

the

terminal

marked

"com."

"negative."

or

"minus"

on

the

left

channel

of

your

amplifier.

d.

In

the

same

manner,

connect

the

"Pos"

terminal

on

the

left

speaker

to

the

terminal

marked

"Pos."

"positive"

or

"plus"

on

the

left

channel

of

the

amplifier.•

e.

Place

the

"Part

2"

speaker

on

the

right

side

of

the

room

and

repeat

the

connection

procedure

for

the

right

am-

plifier

channel.

f.

If

there

is

a

question

whether

the

speakers

are

properly

phased,

a

simple

test

can

determine

if

your

connec-

tions

are

correct.

First,

adjust

your

equipment

for

"mono"

and

play

music

containing

deep

bass

through

your

speaker

system.

With

the

speakers

positioned

next

to

each

other,

the

sound

should

come

from

a

point

between

the

center

of

the

speakers

with

the

music

natural

and

full.

(Be

sure

that

the

balance

control

on

your

amplifier

is

set

in

the

center

or

"normal"

position

during

this

test.)

'II

your

amptilim

has

a

choice

of

impedances

on

the

amplifier

output,

use

the

terminals

maikeil

'4"

or

4

ohms.

Bose Model 501 Loud Owner's guide - Page 6

amplifier.

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