Harman Kardon AVP-1A Owners Manual - Page 12

Lucasfilm

Home

THX

Cinema

Lucasfilm

Home

THX

Cinema

incorporates

Dolby

Pro

Logic

surround

decoding

along

with

additional

audio

enhancements.

RE

-EQUALIZATION:

Re

-Equalization

is

necessary

to

compensate

for

the

fact

that

the

soundtracks

in

films

often

sound

"bright"

in

a

home

environment.

This

results

from

a

combination

of

the

way

we

per-

ceive

sound

in

large

auditoriums

vs.

small

rooms

and

the

theatre

equalization

which

has

become

standardized

throughout

the

movie

industry.

The

Re

-Equalization

circuitry

compensates

precisely

for

these

differences,

restoring

the

sound

to

its

natural

balance

and

minimizing

listening

fatigue

by

reduc-

ing

harshness

in

the

high

frequencies.

DE

-CORRELATION:

The

AVP1A

incorporates

a

proprietary

de

-correlation

circuit

which

alters

the

phase/time

relationships

between

surround

chan-

nels

to

diffuse

the

perceived

sound.

This

eliminates

the

mono

effect

in

the

surround

channels

and

helps

to

restore

the

enveloping

characteristic

that

is

a

system

design

goal.

TIMBRE

-MATCHING:

The

timbre

or

tonal

balance

of

sound

changes

depending

on

whether

it

comes

from

in

front

of

you

or

from

the

sides.

This

has

to

do

with

the

shape

of

the

outer

ear.

This

is

especially

noticeable

when

the

director

pans

a

sound

from

the

front

channels

into

the

surround

channel.

The

char-

acter

of

the

sound

changes

as

the

effect

moves

from

the

front

to

the

surrounds,

even

when

the

speakers

are

perfectly

matched.

This

may

reduce

the

realism

of

the

effect.

Fortunately,

this

characteristic

can

be

compensated

for

by

use

of

very

specific

and

proprietary

equaliza-

tion

applied

to

the

surround

channels

only.

Timbre

-

matching

circuitry

is

included

in

the

AVP1A.

BI

-AMPLIFICATION:

This

technique of

separately

powering

the

main

speakers

and

subwoofer(s)

dramatical

ly

reduces

distortion

while

expanding

the

useful

dynamic

range

of

the

system.

System

distortion

is

substantially

reduced.

In

addition,

bi-ampl

ification

enables

the

front

speakers

to

be

significantly

reduced

in

size

without

any

penalty

in

performance,

al

lowing

them

to

be

more

easi

ly

placed

for

the

best

imaging.

The

AVP1A

includes

a

specific

low

frequency,

steep

-slope

electronic

crossover

specifical

ly

designed

to

match

the

requirements

of

Home

THX

speakers.

al•I•Ifiliattil•

HOMO

MX

103100

HOME

THX

CONTROLLER

lfi -y

opt

Ia.

•

I

Mem..

[regrow

feweno

O

IND

Laardde

T1

Harman Kardon AVP-1A Owners Manual - Page 12

Lucasfilm, Cinema

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