Bose 201 Loud Owner's guide - Page 3

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5.

Connection

Follow

the

next

procedure

to

assure

that

both

201

speakers

are

properly

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

input

terminals

on

the

back

of

the

left

speaker

cabinet.

Note

that

there

are

two

terminals

marked

+

(posi-

tive)

and

—

(negative).

d.

Connect

one

wire

conductor

to

the

terminal

marked

—

on

the

left

speaker.

Connect

the

other

end

of

the

same

conductor

to

the

output

terminal

marked

COM,

GND,

NEG

or

—

on

the

left

channel

of

your

amplifier.

Use

the

color•coding

or

ribbed

line(s)

on

the

wire

to

be

sure

you

are

using

the

same

conductor.

e.

In

the

same

manner,

connect

the

+

terminal

on

the

left

speaker

to

the

output

terminal

masked

POS

or

+

on

the

left

amplifier

channel.

(If

your

amplifier

otters

a

choice

of

output

impedances,

use

the

terminal

marked

8

or

8

OHMS.)

f.

Repeat

steps

4

and

5

above.

connecting

the

right

speaker

to

the

right

output

channel

of

your

amplifier.

Tighten

all

terminal

connections

firmly.

g.

Check

very

carefully

to

be

certain

that

no

loose

strands

of

wire

are

accidentally

"bridged'

across

the

terminals

on

either

the

speakers

or

the

amplifier.

Bridged

wires

cre-

ate

short

circuits

which

can

damage

your

amplifier.

Repair

any

bose

wire

strands

before

operating

your

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:

STEREO

AMPLIFIER

OR

RECEIVER

Left

Output

I

I

Right

Output

1.5A

1

+

-

Pall

Pert

2

Leff

Speaker

ng1A

Speaker

'Optisnal

1.5

-ampere.

last-01ow

fuse

(See

Section

7)

FIGURE

2.

Speaker

connection.

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

lo

udspeakers

so

that

they

are

fac-

ing

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

full,

natural

bass

response.

d.

II

the

music

seems

to

be

lacking

in

deep

bass.

reverse

the

+

and

—

wire

connections

on

one

speaker

and

repeat

the

test.

Use

the

connection

that

produces

the

most

powerful

bass.

7.

Fusing

Any

loudspeaker

can

be

damaged

if

the

amplifier

driving

it

should

fait.

Damage

may

also

occur

by

playing

the

music

so

loudly

that

it

sounds

distorted.

This

can

happen

even

with

a

low

-powered

amplifier

or

receiver.

Your

201

speakers

incorporate

an

automatic

tweeter

protec-

tion

circuit

which

guards

against

certain

types

of

electrical

stress.

Fusing

will

provide

additional

protection.

and

is

rec-

ommended

in

most

applications.

The

fuseholders

should

be

inserted

into

the

+

wire

connect-

ing

each

speaker

to

your

amplifier

or

receiver

(see

FIGURE

2).

Use

1.5

-ampere,

fast

-blow

Buss

AGC

Series.

Littelluse

3AG

Series

or

equivalent

fuses.

A

complete

fuse

k4

including

fuses

and

holders

is

available

from

the

Bose

Customer

Service

Department.

The

Mountan.

Framingham.

Massachusetts

USA

01701

for

$5.00.

Ask

for

the

201

Fuse

Kit.

Part

Number

108938-4

Rolede

ctoomse

tat

Pctale

courted:alma.

ma

imam

redacted

sant

la

maximum

rateflaclsourd.

5

Pau

1

Spiralus

Pant

ROI

8

2

0210

x

4

3

FIGURE

3.

Operation

of

the

Direct

Energy

Controls.

8.

Direct

Energy

Control

The

Direct

Energy

Control

lets

you

change

the

balance

of

reflected

and

direct

sound

radiated

by

your

201

speakers

to

fit

virtually

any

type

of

placement

or

music.

Its

audible

ellect

depends

on

your

distance

from

the

speakers

and

the

acous-

tics

of

your

listening

room.

In

most

cases.

proper

adjustment

of

the

Direct

Energy

Controls

will

significantly

improve

the

performance

of

your

201

system.

Note

that

the

numbers

shown

in

FIGURE

3

are

for

reference

purposes

only

and

do

not

actually

appear

on

the speakers.

Bose 201 Loud Owner's guide - Page 3

Connection, Phasing, Fusing, Direct

Page 3 highlights