Bose 901 Series II Owner's guide - Page 8

2.

ALTERNATE

METHOD

I

(Using

PRE•AMP

OUT

and

MAIN

IN

Connections

with

Receivers

or

Integrated

Amplifiers

(Refer

to

Fig.

4.1)

1

i0

ill

it

t

e

:

PI

I

LL

:?:1

1

7

,

0

•

i

t

II II

FIG.

4

An

alternate

method

of

connecting

the

BOSE

Active

Equalizer

makes

use

of

the

PRE•AMP

OUT

and

MAIN

IN

jacks

provided

by

many

manufacturers

on

their

receivers

or

integrated

amplifiers.

To

do

this

refer

to

your

receiver

and

integrated

amplifier

owner's

instruction

manual

for

separating

the

main

and

preamplifier

sections

of

their

units.

(This

is

usually

accomplished

by

removing

shorting

wires

or

plugs

and/or

moving

a

slide

switch).

Connect

the

PRE•AMP

OUT

terminals

to

the

Equalizer

INPUT

terminals,

and

connect

the

EQUALIZER

OUTPUT

terminals

to

the

MAIN

IN

terminals

of

the

receiver

or

integrated

amplifier.

With

this

method

of

connection,

leave

the

TAPE

switch

on

the

Equalizer

in

the

NORMAL

position.

Tape

re-

corders

are

connected

to

the

receiver

or

amplifier

in

the

conventional

manner.

The

disadvantage

of

this

method

of

connection

is

that

it

is

difficult

to

use

conventional

speakers

or

headphones,

because

the

Equal•

izer

is

always

in

the

circuit.

3.

ALTERNATE

METHOD

II

(Using

separate

PREAMPLIFIERS

and

POWER

AMPLIFIERS)

2

sts7

,-

-t

—77:L.'S

....

,g17,7

a

.

in±f

OD

wow

41.1

0

,1

V.

I

.,

•13

..

r,

,,

Viz

.1.1

IlreCK

1

,

0

Saw/

g...g

(113

....

•

OaL•40

ninCen

0

0

i

i

.....

:

...co..

a

.....

i

-7

.......

-

....

-

kl

,

FIG.

5

The

Equalizer

can

be

connected

in

systems

that

include

separate

preamplifiers

and

power

amplifiers,

between

the

preamplifier

and

power

amplifier

(See

Fig.

5).

The

advantage

of

this

method

of

connection

is

that

the

tape

monitor

functions

of

the

preamplifier

are

still

available

for

connection

to

a

tape

recorder

in

the

conventional

manner.

One

disadvantage

of

this

method

of

connection

is

that

it

is

difficult

to

use

an

additional

pair

of

conventional

loudspeakers

or

headphones

because

the

Equalizer

is

permanently

in

the

circuit.

It

IS

advisable

with

most

power

amplifiers

having

gain

controls

that

these

controls

be

turned

fully

clockwise

(consult

your

amplifier

manufacturer's

owner's

manual

for

recommendations).

S

•

6

Bose 901 Series II Owner's guide - Page 8

II II

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