Bose 901 Series IV Owner's guide - Page 4

I

I

III.

Installation

Your

901

Series

IV

speaker

system

consists

of

three

parts:

two

speakers

(marked

"Part

1"

and

"Part

2")

and

an

electronic

Active

Equalizer

packed

in

the

"Part

1"

container.

Installation

consists

of

three

steps:

1)placing

your

speakers

for

best

sound,

2)

connec-

ting

the

speaker

to

your

amplifying

equipment,

and

3)

connecting

the

equalizer

to

your

amplifying

equipment.

If

you

place

the

speakers

within

the

ranges

suggested

here,

the

unique

adjustments

found

on

the

901

Series

IV

equalizer

will

allow

you

to

achieve

optimum

performance.

(See

SECTION

V).

A.

PLACING

THE

SPEAKERS

Unlike

conventional

speakers,

the

901

Series

IV

functions

with

the

acoustics

of

your

listening

room,

simulating

the

spatial

characteristics

of

the

larger

environments

associated

with

a

live

performance.

This

important

advantage

allows

considerable

'freedom

of

placement

and

produces

an

unusually

large

"best

listening

area."

Outstanding

performance

can

be

obtained

under

a

wide

variety

of

placement

positions.

(See

Figure

2.)

The

following

guidelines

in

placing

the

speaker

cabinets

will

help

you

obtain

the

best

performance.

The

basic

idea

is

to

pro-

vide

space

to

allow

the

sound

to

develop

around

the

speaker

system.

1.

The

angled

grille

panels

found

on

the

enclosure

are

the

rear

face

of

the

901

speaker

(see

Figure

1).

Point

this

por-

tion

of

the

speaker

toward

the

reflecting

wall

(the

wall

behind

the

speaker).

The

point

of

the

"V"

should

be

bet-

ween

12'

and

24'

from

the

reflecting

wall.

Best

results

will

be

obtained

with

the

speakers

placed

between

12"

to

18"

from

the

reflecting

wall.

2.

Speakers

should

be

placed

at

least

18"

above

the

floor

or

below

the

ceiling

(see

Figure

1).

Distances

closer

to

the

ceiling

or

floor

restrict

the

reflected

sound

energy.

4

3.

The

speakers

should

be

at

least

18"

from

a

side

wall

or

opening

into

an

adjacent

room.

(Suggested

distances

are

3'

to

5'.)

Large

objects

(such

as

furniture)

should

be

at

least

24

°

away

from

the

side

of

the

speaker.

4.

Best

results

will

be

obtained

with

the

speakers

spaced

apart

6'

to

10';

however,

separation

as

small

as

3'

or

as

great

as

15'

will

give

excellent

results

in

most

rooms.

If

you

have

not

decided

where

to

place

your

speakers

and

would

like

more

information,

SECTION

V

(LIVING

WITH

YOUR

BOSE

901

SPEAKERS)

provides

several

additional

suggestions

for

speaker

placement.

gs

z

w

,

"R•TC

-

C:tr

6

.6--."f6ce,":,,6:6

;

tiza

,

REFLECTING

WALL

Ire

V.,^6140:2

)

Bose 901 Series IV Owner's guide - Page 4

Installation

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