Bose 901 Series IV Owner's guide - Page 17

VI.

Technical

Information

A.

SPECIFICATIONS

1.

The

system

Is

packed

in

two

cartons

marked

"Part

1"

and

"Part

2."

Shipping

Weight:

Part

1,

45.5

lbs.

Part

2,

43.5

lbs.

Carton

Dimensions:

25%"

x

16"

x

14%"

2.

The

Speaker

Dimensions:

21"

Wide

x

12%"

High

x

13"

Deep

Weight:

35

lbs.

Impedance:

8

ohms

3.

Percentages

of

Reflected

and

Direct

Sound

Radiation

Power

radiated

by

reflection:

89%

Power

radiated

directly:

11°/o

4.

Power

Handling

Minimum

Recommended

Power:

10

watts

rms

per

channel

at

8

ohms.

Maximum

Recommended

Power:

No

power

restrictions

on

amplifier

size

when

used

in

non-commercial

applications,

providing

the

fusing

recommendations

are

followed.

5.

Speaker

Configuration

SPATIAL

CHARACTERISTICS:

Eight

speakers

reflecting

sound

at

30°

angles

from

the

wall

behind

the

speaker;

one

speaker

directed

into

the

listening

area

to

provide

the

op-

timum

ratio

of

reflected

to

direct

sound

and

the

proper

angles

of

the

reflected

sound

incident

upon

the

listener.

SPEAKER

COMPLEMENT:

Nine

matched

full

-range

speak-

ers,

utilizing

aluminum

helically

wound

voice

coils;

linear,

high

-excursion

suspension;

low

impedance

(0.9

ohms)

voice

coils

connected

in

series.

ENCLOSURE:

Acoustic

Matrix

T

M,

utilizing

three

Reactive

Air

Columns

tuned

below

system

resonance

and

partially

isolated

individual

cells

for

each

driver;

air

columns

emerge through

rear

of

speaker

cabinet

for

maximum

effi-

ciency.

6.

The

Active

Equalizer

TAPE

MONITOR

SWITCH:

Replaces

tape

monitor

switch

on

receiver

or

amplifier

when

equalizer

is

connected

in

tape

monitor

circuit.

LOW

FILTER

CONTROL:

Two

-position,

5

dB

decrease

at

40

Hz.

SOURCE

AND

ROOM

COMPENSATION

LOW

FREQUENCY

CONTROL:

Continuously

adjustable

slider,

mt

8

dB

adjustment

over

band

from

100

Hz

to

400

Hz.

HIGH

FREQUENCY

CONTROL:

Continuously

adjustable

slider,

shelving

control

with

range

of

±8

dB

at

10

kHz.

Dimensions:

Input

impedance:

Harmonic

distortion:

Noise

("A"

weighted):

Minimum

load

impedance:

Maximum

output

voltage:

Maximum

gain:

2%,"

High

x

5X

1

°

Deep

x

11%"

Wide

80

kilohms

<

0.1%

(1.0

-volt

output)

90

dB

below

1

volt

5

kilohms

2.5

volts

21

dB

at

16

kHz

(center

setting)

17

Bose 901 Series IV Owner's guide - Page 17

Technical, Information

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