Bose Model 301 Owner's guide - Page 8

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E

C

E

R

E

R

POS

COM

POS

COM

\

J

RIGHT

CHANNEL

OUTPUT

LEFT

CHANNEL

OUTPUT

DIAGRAM

5

POS

PART

2

COM

CONNECTIONS

FOR

MAINTAINING

CORRECT

PHASING

OF

SPEAKERS

POS

PART

1

COM

B.

Connecting

the

Speakers

1.

POWER

REQUIREMENTS

The

Model

301

is

designed

to

be

powered

by

the

majority

of

the

fine

amplifiers

and

receivers

that

are

on

the

market

today.

Power

requirements

will

vary

substan-

tially

with

room

size,

speaker

placement,

and

type

of

music

played.

High

quality

sound

requires

less

than

10

watts

rms

per

channel,

although

amplifiers

rated

up

to

60

watts

rms

per

channel

may

be

used.

2.

WIRE

SELECTION

If

the

wires

to

your

speakers

are

less

than

30

feet

long,

18

-gauge

zipcord

(two

-conductor)

wire

is

recom-

mended.

If

30-

to

50

-foot

lengths

of

wire

are

needed,

16

-gauge

two

-conductor

wire

should

be

used.

If

your

dealer

doesn't

provide

you

with

speaker

wire,

it

can

be

ob-

tained

at

most

hardware

stores.

8

Choosing

the

correct

wire

size

insures

that

the

wire

connecting

your

speakers

doesn't

have

too

much

resistance.

Excessive

re-

sistance

causes

audible

coloration

and

loss

of

power

with

all

speak-

ers.

3.

PHASING

It

is

important

that

the

connections

to

the

speakers

and

the

receiver

or

amplifier

be

the

same

for

both

channels

so

that

the

two

speakers

are

in

phase

with

each

other.

Refer

to

Diagram

5

as

you

do

the

following

steps:

1.

Start

with

the

speaker

marked

"Part

1".

2.

Place

it

on

the

left

side

of

your

room.

3.

Locate

the

"POS"

and

"COM"

terminals

on

the

rear

of

the

speaker.

4.

Using

your

speaker

wire,

which

is

marked

to

distinguish

one

conductor

from

the

other

by

means

of

color

or

grooved

ridges,

connect

the

terminal

marked

"COM"

on

the

back

of

the

left

speaker

to

the

terminal

marked

"COM,"

"negative"

or

(-),

on

the

left

channel

amplifier

output.'

5.

Connect

the

"POS"

terminal

on

the

left

speaker

to

the

terminal

marked

"POS,"

"positive"

or

(+),

on

the

left

channel

output

of

the

amplifier

or

receiver.

6.

Place

the

speaker

marked

"Part

2"

on

the

right-hand

side

of

the

room

and

repeat

the

connection

procedure.

4.

FUSING

When

using

the

Model

301

with

amplifiers

rated

at

more

than

60

watts

rms

per

channel,

or

with

sinusoidal

or

other

test

signals,

we

recommend

that

the

speaker

be

protected

by

a

BUSS

MDL

1

1

/

2

-amp

"slow

-blow"

fuse

(or

equivalent)

using

an

in

-line

HDH

fuseholder

(or

equivalent)

wired

in

series

on

the

posi-

tive

side

of

each

speaker

cable.

The

fuse

will

also

provide

pro-

tection

against

speaker

damage

in

the

event

of

amplifier

failure.

'When

connecting

to

your

amplifier,

if

there

is

a

choice

of

imped-

ances

on

the

amplifier

output,

use

the

terminal

marked

"8"

or

"8

ohms."

If

two

pairs

of

Model

301s

are

being

connected

in

parallel,

the

terminal

marked

"4"

or

"4

ohms"

on

the

receiver

or

amplifier

should

be

used.

Bose Model 301 Owner's guide - Page 8

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