PSB 760IMGNT User manual

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Owner's Guide

Thank

you

for

your

purchase.

Our

speakers

are

designed

to

make

high-performance

sound

easy

to

bring

into

your

life.

They

have

the

wide

frequency

and

dynamic

range,

natural

tonal

balance,

and

precise

spatial

imaging

needed

to

make both

music

and

movies

powerfully

lifelike

and

enjoyable.

All

of

our

models

match

closely

in

tonal

balance

to

allow

easy

mixing

in

home

theater

systems.

The

quick-start

instructions

below

will

get

you

going.

But

we

hope

you

will

read

through

this

booklet

to

help

assure

your

maximum

enjoyment.

I.

QUICK-START

GUIDE

A.

Be

sure

power

to

your

amplifier/receiver

and

other

electronics

is

off

before

making

connections.

B.

Install

bumpers

or

feet

with

adjustable

levelers

or

spikes.

1.

Bumpers

and

Support

Bars

(Bookshelf

and

Center

Channel

Speakers)

Attach

the

adhesive-backed

bumpers

near

the

corners

of

bookshelf

and

center

channel

speakers,

to

protect

the

finish

of

the

speaker

and

the

finish

of

the

furniture

beneath.

For

centre

channel

speakers

supplied

with

support

bars,

position

the

bar

to

aim

the

speaker

toward

the

listening

position.

2.

Molded

Feet

and

Stabilizers,

Adjustable

Rubber

Levelers

and

AdJustable

Spikes

(Tower

Speakers)

If

not

already

attached,

screw

the

supplied

moulded

feet

into

the

threaded

inserts

located

in

the

corners

of

the

speaker

bottom.

In

some

models,

speaker

spikes

for

carpet

use

or

threaded

rubber

isolation

levelers

for

hard

floor

use

can

be

inserted

into

the

feet.

In

other

models,

spikes

or

levelers

go

directly

into

the

threaded

inserts

in

the

pedestal

base

on

the

bottom

of

the

speaker

rather

than

into

feet.

SPEAKERS

a)

Carpet

Use

Screw

four

spikes

with

four

lock

nuts

into

the

inserts

located

in

the

four

corners

of

the

speaker

bottom,

Locate

the

speakers

and

adjust

to

the

desired

height

(higher

for

thicker

carpet)

and

tighten

the

lock

nuts

with

the

wrench.

b)

Hard

Floor

Use

Screw

four

threaded

rubber

isolation

bumpers

with

four

lock

nuts

into

the

inserts

located

in

the

four

corners

of

the

speaker

bottom.

Adjust

and

tighten

the

lock

nuts

with

nut

wrench.

C.

Position

your

main

speakers,

as

symmetrically

as

possible,

at

a

comfortable

listening

distance-slightly

closer

to

each

other

than

they

are

to

you.

(For

surround

speakers,

see

later

instructions.)

D.

Using

standard

18

gauge

(1.0mm

dia)

lamp

wire

or

better,

connect

the

Red

(positive)

terminal

on

each

channel

of

your

amp/receiver

to

a

Red

terminal

post

on

that

channel's

speaker,

and

the

Black

(negative)

terminal

to

a

Black

terminal

post

on

the

speaker.

E.

Setting

the

volume

low

beforehand,

turn

on

your

associated

equipment,

find

a

comfortable

listening

volume-and

enjoy

your

favourite

audio

and/or

video

selections.

F.

After

you

have

settled

in

with

your

speakers,

read

through

this

booklet.

Be

sure

to

read

jfProtecting

Your

Investment'

II.

ADDITIONAL

DETAILS

ON

CONNECTING

YOUR

SPEAKERS

A.

Important:

Always

tum

off

your

electronic

equipment

before

connecting

speakers.

If

you

don't,

severe

damage

to

equipment

and/or

your

ears

may

result.

B.

Selecting

Speaker

Wire

We

recommend

the

following

gauge

of

standard

two-conductor

wire

for

the

wiring

distances

specified;

if

you

prefer,

you

can

use

thicker

(lower-gauge)

wire.

Under

25ft

(7.5

m):

25-50

ft

(7.5-15

m):

50-100ft

(15-30

m):

Over

100ft

(>30m):

C.

Connecting

In

Phase

18-gauge

or

1.0

mm

dia

(lamp

cord)

16-gauge

or

1.3

mm

dia

(heater

cord)

14-gauge

or

1.6

mm

dia

12-gauge

or

2.0

mm

dia

Connect

speakers

identically

to

your

amplifier

or

receiver

on

each

2

channel-Red

amp/receiver

terminal

to

Red

speaker

terminal,

Black

to

Black.

This

will

ensure

that

the

diaphragms

of

the

speakers

on

both

channels

move

forward

and

backward

together

("in-phase"),

rather

than

in

opposition

("out-of-phase").

In-phase

connection

provides

maximum

clarity

and

bass,

while

out-of-phase

connection

results

in

frequency

cancellations

and

produces

thinner

and

less

distinct

sound-with

less

bass,

vague

vocal

quality,

and

no

solid

centre

image.

To

help

insure

the

proper

connection,

the

two

separate

conducting

wires

in

a

standard

two-

conductor

speaker

cable

are

coded

in

one

way

or

another

to

be

distinguishable

from

each

other.

(The

jacket

of

one

wire

may

be

ribbed

or

marked

with

"+"

signs,

or

one

wire

under

the

insulation

may

be

a

different

colour

from

the

other.)

Use

this

wire-coding,

together

with

the

amp/receiver

and

speaker

colour-coding,

to

be

sure

you

are

connecting

the

same

wire

of

a

given

pair

to

a

like-coded

terminal

at

both

ends

of

your

connection.

D.

Be

sure

all

wiring

terminals,

are

tightened

firmly

secure,

but

be

careful

not

to

overtighten

and

damage

the

connectors.

Ri

ght

Speaker

+ -

[Q][]

I

I I

---------.

Amp

l

ifier

Outpu

t

I

I

I

[Q]C

o•

+

Right

Left

Speake

r

Left

Figure

1:

Wiring

in

Phase

Between

Speakers

and

Amplifier

E.

Bi·wiring

and

Bi-amping

The

metal

jumper

strap

that

connects

the

two

sets

of

terminals

on

some

of

our

speakers

is

removable.

This

allows

you

to

connect

either

separate

cables

to

the

separated

woofer

and

tweeter

terminals

("bi-wiring")

or

separate

amplifiers

("bi-amping").

With

Bi-Amp

hookup

you

must

use

either

identical

amplifiers

or

amplifiers

adjusted

to

have

the

same

voltage

gain.

Consult

your

PSB

dealer

for

further

information.

(Illustrations

are

for

one

speaker

hookup

only).

With

single

cable

inputs,

the

jumper

straps

3

must

be

in

place

and

both

sets

of

terminals

tightened

firmly.

81-WIRE

HOOKUP

81-AMP

HOOKUP

SPEAKER SPEAKER

AMP

+

00{"'

+Mid/High

OUTPUT

-

~

Mid/High

-

AMP

+

+

Woofer

#2

+

Woofer

-

{labeled)

OUTPUT

--

{labeled)

Figure

2:

Bi-wire

and

Bi-amp

Wiring

Between

Speakers

and

Amplifier

Ill.

SPEAKER

PLACEMENT-MAXIMIZING

YOUR

ENJOYMENT

The

positioning

of

your

main

left-right

speakers

for

stereo

or

home

theatre

can

play

a

major

role

in

their

performance.

We

hope

you

will

read

through

the

placement

discussion

on

these

next

few

pages,

beginning

with

these

basics:

A.

The

optimum

placement

height

for

main

speakers

is

normally

with

their

tweeters

at

about

the

same

height

as

your

ears

when

you

are

seated.

Our

tower

speakers

are

designed

for

optimal

listening

when

seated.

For

our

compact

monitors,

we

recommend

using

generally

available

accessory

speaker

stands

to

achieve

the

right

height

if

you

are

not

using

existing

shelves

or

furniture.

You

may

prefer

to

tilt

the

speakers

towards

ear

level

if

the

proper

height

is

not

possible.

B.

You

will

generally

get

the

best

imaging

and

other

spatial

qualities

if

your

speakers

and

your

usual

seating

position

form

an

almost

equilateral

triangle,

with

the

speakers

not

quite

as

far

apart

from

each

other

as

they

are

from

you.

If

you

must

sit

closer

to

one

speaker

than

the

other,

use

the

Balance

control

on

your

electronics

(or

the

individual

level

controls

on

home

theatre

channels)

to

give

the

more

distant

speaker

a

balancing

boost

in

volume.

C.

The

best

high-frequency

dispersion,

producing

the

widest

"sweet

spor

in

which

you

and

others

can

sit

and

enjoy

optimum

high-frequency

definition,

will

result

when

your

speaker

enclosures

are

positioned

vertically

rather

than

horizontally.

If

you

need

to

place

compact

monitor

enclosures

horizontally,

the

speakers

will

still

perform

very

well,

but

the

seating

area

where

you

will

enjoy

optimum

sound

will

become

more

narrow.

We

suggest

you

position

the

tweeters

to

the

outside

away

from

the

centre

line.

4

D.

If

you

sit

equally

distant

from

both

speakers,

angling

the

speakers

inward

crtoeing

them

in')

about

5

to

10

degrees

usually

produces

the

best

convergence

of

high

frequencies

where

you

listen.

Different

listening

positions

may

require

different

toe-in.

E.

To

go

beyond

these

basics

and

experiment

with

positioning

for

optimum

performance,

please

read

the

placement

guidelines

that

follow.

They

are

about

the

speakers,

the

room,

and

you.

1.

The

Speakers

in

Relation

to

Room

Boundaries

The

position

of

your

speakers

with

respect

to

the

walls,

floor,

and

ceiling

of

your

listening

room

will

often

affect

their

sound

in

major

ways.

a)

The

closer

you

place

speakers

to

the

boundary

surfaces

of

your

room,

the

greater

the

proportion

of

bass

in

their

overall

sound.

This

is

due

to

the

enclosing,

"focusing"

effects

of

nearby

surfaces

on

longer-wavelength

(lower)

frequencies.

Positioning

the

speakers

near

the

intersection

of

two

surfaces

(wall

and

wall,

wall

and

floor,

or

wall

and

ceiling)

will

produce

more

apparent

bass

than

placement

near

a

single

surface.

The

greatest

proportion

of

bass

is

delivered

by

placement

near

three

intersecting

surfaces-in

a

room

comer

near

the

floor

or

ceiling,

where

the

convergence

of

the

two

walls

and

the

floor/ceiling

produces

an

amplifying

effect

that

is

a

bit

like

that

of

a

megaphone.

And

the

least

bass

comes

from

placing

a

speaker

away

from

all

boundaries.

Your

own

tastes

should

decide

what

proportion

of

bass

response

seems

right

in

your

room.

b)

The

combination

of

the

three

dimensions

of

your

room

generally

will

produce

at

least

three

points

in

the

room

where

the

frequency

response

you

experience

related

to

a

given

position

(of

either

the

speaker

or

you)

will

either

greatly

increase

or

almost

disappear.

The

most

obvious

effects

are

on

low

frequencies,

but

mid-frequency

effects,

while

usually

subtler,

are

also

often

present.

Keep

in

mind,

then,

that

very

small

changes

in

positioning

(of

the

speakers

or

you)

may

produce

major

or

subtle

changes.

c)

Distances

of

speakers

from

the

walls

can

make

great

differences

in

the

number,

strength,

and

particular

frequencies

of

secondary

reflections--changing

frequency-

balance,

sonic

spaciousness,

and

definition.

Most

listeners

prefer

their

speakers

at

least

a

few

inches

from

all

walls,

but

the

choice

is

yours

to

determine

by

listening.

5

2.

You

in

Relation

to

the

Speakers

Where

you

sit

in

relation

to

your

speakers

obviously

makes

a

difference

too.

The

proportions

of

the

particular

triangle

formed

by

your

speakers

and

you

matter.

(You

may

need

to

send

more

power

to

the

more

distant

speaker

to

compensate

if

you

get

much

further

from

one

speaker

than

the

other.)

The

overall

distances

involved

also

matter.

As

you

get

further

from

the

speakers,

more

sound

reflected

from

your

room•s

surfaces

(in

contrast

to

the

sound

coming

directly

from

the

speakers)

reaches

your

ears,

and

the

original

spatial

relationships

in

a

recording

are

changed

as

your

room

"takes

over."

Sometimes

the

result

is

a

mellower,

more

"integrated"

sound.

Other

times,

it•s

a

more

strident

or

annoyingly

"echoey·

-or

other-quality.

Once

again,

the

particular

dimensions

of

your

room

play

a

part.

And

depending

on

what

seems

more

realistic

and/or

enjoyable

to

your

ears,

you

may

choose

to

sit

at

a

great

distance

or

have

close-up,

"near-field"

sound.

Keep

in

mind

that

the

right

••toe-in,"

the

right

speaker

height,

and

a

reasonably

symmetrical

distance

from

the

speakers

all

tend

to

work

together

to

deliver

the

best

high-frequency

definition

and

imaging.

3.

You

in

Relation

to

Room

Boundaries

Changing

your

own

position

with

respect

to

a

room•s

boundaries

may

also

bring

a

big

effect,

sometimes

for

a

small

change.

Getting

further

from

the

wall

behind

you

may

make

sound

more

precise

and

localized.

Getting

closer

may

make

sound

more

"mellow"

and

integrated.

Coming

too

close-to

back

wall,

side

wall,

or

(especially)

a

corner-may

trigger

a

major

sonic

peak

or

cancellation

of

a

certain

band

of

frequencies.

It

depends

on

factors

we

can't

cover

fully

here

but

do

get

into

on

our

web

site

-

www.psbspeakers.com.

Remember

too,

with

respect

to

your

own

positioning,

that

it

may-or

may

not-be

easier

to

change

your

own

seating

location

than

to

move

your

speakers.

As

with

so

much

else

in

life,

the

one

certain

rule

is

that

you

shouldn•t

fix,

or

worry

about,

what

isn't

broken

(audibly

in

this

case),

especially

if

it

means

moving

heavy

furniture.

As

you

consider

the

three

relationships

we

have

outlined,

the

idea

is

to

manipulate

whatever

variable

is

easiest

and

most

productive

for

improving

your

listening

experience.

Be

sure

to

base

your

judgements

on

listening

to

a

good

variety

of

recordings

of

vocals,

and

acoustic

instruments,

soloists,

different

movies

and

musical

instruments

to

most

easily

recognize

tonal

balance

shifts.

6

IV.

POSITIONING

SURROUND

SPEAKERS

Your

surround

speakers

and

how

they

are

positioned

will

determine

the

sonic

realism

of

movies

and

multi-channel

audio.

Most

surround

sound

is

meant

more

to

create

greater

depth

and

overall

ambience

than

to

localize

effects

as

coming

from

a

particular

spot.

This

is

especially

true

of

Dolby

Pro-Logic

surround

sound,

in

which

both

surround

channels

carry

the

same

(monophonic)

information

and

can't

be

differentiated

from

each

other.

With

Dolby

Digital

and

DTS

surround

sound,

there

is

very

definite

localization

of

some

surround

effects.

How

much

you

prefer

these

localized

effects

vs.

overall

sonic

depth

and

diffusion

is

up

to

your

listening

preferences.

If

you

are

listening

to

multi-channel

music,

you

may

want

the

maximum

localization

of

instruments.

But

if

your

main

concern

is

the

surround

effects

in

movies,

they

tend

to

depend

more

on

front-to-back

movement

than

on

specific

localization.

You

can

locate

and

aim

your

surround

speakers

to

produce

the

effects

you

prefer,

whether

precisely

pinpointed

or

pleasantly

diffused.

Although

some

people

prefer

to

have

their

surround

speakers

behind

them

on

stands

at

ear

height,

most

find

it

easiest

and

best

to

mount

compact

monitors

on

the

walls,

at

least

two

feet

above

your

ear

height

when

you

are

seated.

If

your

listening

room

is

small,

aiming

the

speakers

to

diffuse

their

sound

somewhat

may

produce

the

best

overall

surround

illusion.

They

can

be

mounted,

for

instance,

on

the

side

walls

and

aimed

to

bounce

sound

off

the

rear

walls,

or

vice

versa.

If

you

opt

for

localization

of

sound

from

the

surrounds,

the

speakers

should

face

your

listening

spot,

aimed

at

or

slightly

above

your

seated

position.

Speakers

mounted

on

the

side

walls

generally

will

sound

best

when

placed

a

foot

or

two

behind

your

seating

area.

Our

illustration

shows

some

typical

placement

options.

"

\ "

....

.,.

__

_

Fi

gure

3:

Positioning

Speakers

for

Music

and

Home

Theatre

7

V.

PROTECTING

YOUR

INVESTMENT

A.

For

full,

year-after-year

enjoyment

from

your

speakers,

you

should

respect

their

limits.

They

will

produce

room-filling

volume

in

average-

sized

rooms-and

handle

peak

momentary

levels

at

those

volumes

without

audible

strain.

But

avoid

louder-than-life

playback

of

music

or

movies,

especially

in

large

rooms.

Even

the

most

"bulletproor

speakers

can

be

damaged

by

excessive

volume

levels,

especially

for

long

periods.

B.

When

listening

to

music

or

movies

at

very

loud

volume,

you

shouldn't

tum

up

bass

or

treble

all

the

way

or

close

thereto.

This

sends

tremendously

increased,

disproportionate

power

into

the

speakers,

and

may

well

damage

them.

Some

loudness

compensation

("Loudness")

controls,

which

boost

both

bass

and

treble,

can

also

be

troublesome

at

high

volume.

They

are

intended

only

for

low-volume

listening.

C.

Finally,

you

should

be

aware

that

when

amplifiers

and

receivers

are

pushed

to

their

limits

to

produce

excessive

volume

levels,

they

are

driven

into

"clipping"

and

can

do

severe

damage-especially

to

tweeters.

Often,

the

damage

is

done

by

underpowered

amplifiers,

which

may

reach

their

limits

very

soon.

When

such

units

begin

to

"clip"

the

audio

waveform,

they

may

generate

high-frequency

"spikes"

of

tremendous

power.

More

tweeters

have

probably

been

destroyed

by

this

phenomenon

than

any

other.

If

using

your

speakers

at

loud

levels,

listen

carefully

for

any

sign

of

harsh,

garbled

midrange

and

diminishing

intelligibility-and

tum

the

volume

down

right

away

if

you

detect

it.

NEVER

TURN

UP

THE

VOLUME

ALL

THE

WAY

TO

SEE

HOW

LOUD

YOUR

SYSTEM

WILL

PLAYI

D.

Recommended

Power

We

recommend

amplifiers

and

receivers

rated

from

a

range

of

20-150

watts

with

our

compact

systems,

20-200

watts

with

our

tower

models.

For

playing

at

consistently

room-filling

volume,

a

minimum

of

50

watts

is

usually

a

good

idea.

As

just

indicated

in

the

paragraph

above,

be

wary

of

driving

low-powered

amplifiers

to

their

limits.

We

recommend

a

maximum

of

80-150

watts

for

sustained

program

material-as,

for

instance,

with

organ

pedal

tones

of

long

duration,

or

minutes-long

subterranean

special

effects

in

movies.

Be

aware

amplifiers

with

equal

power

rating

may

not

play

equally

loud.

Those

with

higher

dynamic

power

ratings,

better

satisfy

the

power

requirements.

Some

have

protective

circuitry

that

curtails

power

available

in

demanding

situations.

8

E.

Cabinet

Care

Cabinets

have

varying

materials

and

finishes,

including

wood

veneers,

vinyl,

anodized

aluminum

and

high

gloss

"poly

lacquers"

and

should

be

treated

as

you

would

furniture

with

similar

finishes.

Dust

lightly

with

a

soft

cloth;

avoiding

abrasives.

If

necessary,

wipe

carefully

with

a

cloth

slightly

dampened

with

glass

cleaner

to

remove

heavy

soil.

F.

Grilles

and

Ports

A

lint

brush

does

a

good

job

of

cleaning

grilles.

Removable

grilles

can

be

taken

off

and

vacuumed

if

you

prefer.

If

need

be,

you

can

use

a

lint

brush

to

clean

ports.

Avoid

touching

speaker

diaphragms.

Particularly,

pushing

in

the

domes

will

permanently

damage

tweeters.

VI.

IN

CASE

OF

PROBLEMS

A.

Lower

power

ifa

speaker

begins

to

sound

distorted,

or

seems

to

be

missing

certain

frequencies,

to

check

first

to

see

whether

playing

at

somewhat

lower

volume

seems

to

clear

up

the

problem.

As

we

noted

under

"Recommended

Power,"

it

can

be

especially

important

to

tum

down

the

volume

right

away

if

you

have

pushed

a

low-powered

amplifier

or

receiver

past

its

comfortable

limits.

B.

Isolate

the

problem

to

the

electronics

or

the

speakers

and,

if

the

speakers,

to

specific

speakers.

Interchange

the

speaker

wire

connections

on

your

amplifier

or

receiver

between

channels,

so

that

the

left

speaker

is

connected

to

the

right

channel,

or

vice

versa.

If

the

problem

shifts

to

the

other

speaker,

the

problem

is

not

in

the

speaker

but

in

the

electronics.

C.

Another

component-or,

very

often,

a

cable

or

connection

problem

between

components-may

be

at

fault.

If

the

problem

stays

in

the

same

speaker,

irrespective

of

the

channel

to

which

it's

connected-and

after

changing

the

connecting

wire--chances

are

the

speaker

itself

probably

needs

service.

D.

See

your

dealer

if

you

require

service.

PSB

dealers

are

equipped

to

handle

almost

all

problems.

If

you

have

moved

since

your

purchase,

the

nearest

authorized

PSB

dealer

should

be

able

to

help

you.

If

the

problem

is

not

resolved,

please

contact

us,

providing

the

Model

name,

Serial

Number,

date

of

purchase,

dealer

name,

and

a

full

description

of

the

problem.

We

appreciate

your

purchase,

and

hope

this

owner's

guide

helps

you

enjoy

the

exceptional

satisfaction

that

PSB

speaker

systems

have

to

offer.

We

wish

you

many

years

of

enjoyable

listening!

9

Notes

on

environmental

protection

At

the

end

of

its

useful

life,

this

product

must

not

be

disposed

of

with

regular

household

waste

but

must

be

returned

to

a

collection

point

for

the

recycling

of

electrical

and

electronic

equipment.

The

symbol

on

the

product,

use~s

manual

and

packaging,

point

this

out.

The

materials

can

be

reused

in

accordance

with

their

markings.

Through

re-use,

recycling

of

raw

materials,

or

other

forms

of

recycling

of

old

products,

you

are

making

an

mportant

contribution

to

the

protection

of

our

environment.

Your

local

administrative

office

can

advise

you

of

the

responsible

waste

disposal

point.

10