Bose 301 Series II Loud Owner's guide - Page 3

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4.

Wire

Selection

Audible

sound

coloration

and/or

power

loss

can

occur

if

the

wire

connecting

the

speakers

to

your

amplifier

or

receiver

is

not

thick

enough.

The

table

below

specifies

the

minimum

thickness

of

2

-conductor

wire

recommended

for

various

speaker

-to

-amp

distances.

RECOMMENDED

WIRE

SIZES*

Maximum

Length

Wire

Gauge

30

feet

(

9

m)

18

(0.75

mm

2

)

45

feet

(14

m)

16

(1.5

mm

,

)

70

feet

(21

m)

14

(2.0

rnme)

teseciatamovuerutregJertyleVeMedev.I.Onol

=0508.

Standard

2

-conductor

zipcord

(available

at

electrical

and

hardware

stores)

can

be

used

for

speaker

connection.

This

wire

is

often

cobr-coded.

or

else

has

a

ribbed

line(s)

running

along

one

conductor

for

easy

identification

of

the

positive

and

negative

leads.

5.

Connection

Follow

the

nexl

procedure

to

assure

that

both

301

10

speakers

are

property

connected

to

your

music

system.

Refer

to

FIGURE

2.

a.

Turn

off

your

amplifier

or

receiver

and

unplug

it

from

the

ac

power

mains

before

connecting

the

loudspeakers.

b.

Separate

the

conductors

at

the

end

of

each

length

of

wire.

Strip

approximately

Y2

inch

(12

mm)

of

insulation

off

each

conductor.

c.

Locate

the

push

-type

input

terminals

on

the

back

of

the

left

speaker

cabinet.

Note

that

there

are

Iwo

terminals

marked

+

(positive)

and

-

(negative).

STEREO

Left

Cutput

AMPLIFIER

OR

RECEIVER

6.

Phasing

Test

If

you

are

not

certain

that

the

speakers

are

connected

to

your

amplifier

"in

phase"

(i.e.,

positive

to

positive,

negative

to

negative).

perform

this

simple

test:

a.

Set

your

sound

system

for

MONO

(monophonic)

repro-

duction.

Be

sure

the

balance

control

is

centered

or

set

to

normal.

b.

Temporarily

place

the

loudspeakers

so

that

they

are

facing

each

other

closely.

c.

Play

music

containing

deep

bass

notes

through

the

sys-

tem.

If

the

speakers

are

phased

correctly,

the

sound

will

appear

to

come

from

a

point

between

the

speakers

with

ROIOutput

Sn•

Parts

Loll

Speaer

Part

2

Right

Srtaur

'Optional

1.5

-ampere.

Iasi

-blow

fuse (see

Sectian

71

full,

natural

bass

response.

d.

If

the

music

seems

to

be

lacking

in

deep

bass.

reverse

the

FIGURE

2.

Speaker

connection.

and

wire

connections

on

one

speaker

and

repeat

the

test.

Use

the

connection

that

produces

the

most

d.

Connect

one

wire

conductor

to

the

terminal

marked

—on

powerful

bass.

the

left

speaker.

Connect

the

other

end

of

the

same

con-

ductor

to

the

output

terminal

marked

COM,

GND.

NEC

7.

Fusing

or

—en

the

left

channel

of

your

amplifier.

Use

the

color

-

Any

loudspeaker

can

be

damaged

if

the

amplifier

driving

it

coding

or

ribbed

hne(s)

on

the

wire

to

be

sure

you

are

should

fail.

Damage

may

also

occur

by

playing

the

music

so

using

the

same

conductor.

loudly

that

it

sounds

distorted.

This

can

happen

even

with

e.

In

the

same

manner,

connect

the

terminal

on

the

left

a

low

-powered

amplifier

or

receiver.

speaker

to

the

output

terminal

marked

POS

or

+

on

Your

301

speakers

incorporate

heavy-duty

driver

elements

the

left

amplifier

channel.

(If

your

amplifier

offers

a

which

are

designed

to

resist

many

types

of

electrical

stress.

choice

of

output

impedances.

use

the

terminal

marked

Fusing

will

provide

additional

protection.

and

is

recom-

8

or

8

OHMS.)

mended

in

most

applications.

f.

Repeat

steps

d

and

e

above,

connecting

the

right

speaker

to

the

rightoutput

channel

of

your

amplifier.

The

fuseholders

should

be

inserted

into

the

+

wire

connect-

ing

each

speaker

to

your

amplifier

or

receiver

(see

FIGURE

g.

Check

very

carefully

to

be

certain

that

no

loose

strands

of

wire

are

accidentally

"bridged"

across

the

terminals

GO

2).

Use1.5-ampere,

fast

-blow

Buss

AGC

Series.

Liftelfuse

either

the

speakers

or

the

amplifier.

Bridged

wires

create

3AG

Series

or

equivalent

fuses.

short

circuits

which

can

damage

your

amplifier.

A

complete

fuse

kit

including

fuses

and

holders

is

available

Repair

any

loose

wire

strands

before

operating

you'

from

the

Bose

Customer

Service

Department,

The

Mountain.

amplifier

or

receiver.

Framingham,

Massachusetts

USA

01701

for

$5.00.

Ask

for

Me

301

Fuse

Kit,

Part

Number

108938-4.

Bose 301 Series II Loud Owner's guide - Page 3

Selection, Connection, Phasing, Fusing

Page 3 highlights