Bose 901 Series II Owner's guide - Page 3

4

r

INTRODUCTION

Thank

you

for

purchasing

the

BOSE

901

Series

31

Direct/Reflecting

r

speaker

system.

The

listening

enjoyment

ex-

perienced

with

your

BOSE

901s

culminates

many

years

of

research

and

dedication

to

the

art

of

bringing

the

finest

musical

reproduction

into

your

home.

THE

BOSE

901

with

its

unique

shape,

9

drivers,

and

Active

Equalizer

incorporates

a

number

of

major

advances

in

speaker

technology.

It

is

designed,

installed,

and

connected

differently

from

conventional

loudspeakers.

These

major

differences

contribute

directly

to

the

new

level

of

realism

of

music

reproduction

provided

by

the

901

speaker

system.

The

detailed

installation

and

placement

instructions

are

important.

PLEASE

TAKE

THE

TIME

TO

READ

THIS

MANUAL,

as

this

is

the

only

way

you

will

obtain

the

full

benefits

of

the

901's

unique

design.

You

will

be

amply

rewarded

by

the

listening

pleasure

which

your

901s

provide,

wi

en

properly

installed.

II.

UNPACKING

YOUR

9O1s

The

901

speaker

system

is

packed

in

two

cartons

marked

"Part

1"

and

"Part

2."

THE

ACTIVE

EQUALIZER

IS

CONTAINED

IN

A

CARDBOARD

WEDGE

FOUND

IN

PART

1.

Unpack

both

cartons

carefully.

(Save

the

cartons

and

packing

materials

for

possible

use

later.)

If

either

the

speakers

or

the

Equalizer

are

visibly

damaged

when

you

un-

pack

them,

do

not

place

the

system

in

operation.

Repack

the

speakers

and

the

Equalizer

in

the

original

cartons

and

notify

your

dealer

immediately.

(See

Section

V.)

III.

INSTALLATION

OF

YOUR

901s

A.

SPEAKER

PLACEMENT

•

One

of

the

most

important

advantages

of

the

8OSE

901

speaker

system

is

that

it

is

designed

to

operate

properly

in

most

listening

rooms,

not

in

anechoic

test

chambers.

The

superior

dispersion

characteristics

of

the

901

allow

considerable

freedom

of

placement

and

an

unusually

large

"best

listening

area."

To

obtain

the

full

performance

of

the

901,

you

must

follow

the

placement

guidelines

in

this

section.

The

angled

(vee

shaped)

grille

cloth

panels

are

the

back

of

the

901.

Point

the

vee

toward

the

wall.

The

distance

of

the

speakers

from

the

wall

is

very

important.

The

point

of

the

vee

should

be

12

inches

from

the

wall.

(Although

the

901

was

designed

to

be

placed

12

inches

from

a

reflecting

wall,

satisfactory

performance

can

be

obtained

anywhere

within

the

range

from

8

to

24

inches.)

The

point

of

the

speaker

should

be

aimed

directly

at

the

reflecting

wall,

and

NOT

directly

into

a

corner

(See

Fig.

11.

I

18".36"

a

DO

NOT

PLACE

HERE

Mail

way

point

between

ceiling

and

flood

T

18".36"

4'

15'

2

L

18"

36"»

FIG.

1

The

reflecting

wall

ideally

should

be

made

of

a

dense,

solid

substance

such

as

wood.

brick,

cement

block,

piaster,

or

sheetrock.

Substances

like

glass.

Pegboard,

cork.

or

acoustic

tile

make

ineffective

reflecting

walls.

(The

Equalizer

is

designed

to

accommodate

surfaces

which

might

otherwise

present

problems.

(See

Section

IV

B.I

I

3

Bose 901 Series II Owner's guide - Page 3

Introduction, Unpacking, Installation

Page 3 highlights