BBE 422A Manuale utente

Sound

Inc.

MODEL

422A

USER

MANUAL

Important

Safeguards

WARNING

prevent

fire

shock

hazard,

not

expose

the

unit

rain

moisture.

ATTENTION:

RISQUE

CHOC

ELECTRIC-

PAS

OUVRIR.

The

lightning

flash

with

arrowhead

symbol,

within

equilateral

triangle,

intended

alert

the

user

the

presence

uninsulated

"dangerous

voltage"

within

the

product’s

enclosure

that

may

sufficient

magnitude

constitute

risk

electric

shock

persons.

The

exclamation

point,

within

equilateral

triangle

intended

alert

the

user

the

presence

important

operating

and

maintenance

(servicing)

instructions

the

literature

accompanying

the

appliance.

For

your

protection,

please

read

these

safety

instructions

completely

before

operating

the

appliance,

and

keep

this

manual

for

future

reference.

Carefully

observe

all

warnings,

precautions

and

instructions

the

appliance

and

described

the

operating

instructions

supplied

with

the

appliance.

INSTALLATION

■

Water

and

Moisture

not

install

the

appliance

near

water:

for

example,

near

bathtub,

washbowl,

kitchen

sink,

laundry

tub.

wet

basement,

near

swimming

pool.

Heat

not

install

the

appliance

near

sources

heat

such

radiators,

heat

regis¬

ters,

stoves,

other

appliances

that

pro¬

duce

heat.

USE

Power

Source

Connect

the

appliance

power

supply

only

the

type

described

the

operating

instructions

marked

the

appliance.

Power-Cord

Protection

Route

the

power

cord

that

not

likely

walked

pinched

having

objects

placed

it,

paying

particular

attention

the

plugs,

receptacles,

and

the

point

where

the

cord

exits

from

the

appliance.

SERVICE

Unplug

the

appliance

from

the

wall

outlet

and

consult

qualified

service

personnel

when:

the

power

cord

the

plug

has

been

damaged.

solid

object

liquid

has

fallen

into

the

cabinet.

Ventilation

situate

the

product

its

location

position

does

not

interfere

with

its

proper

ventilation.

For

example,

you

should

not

place

the

product

bed.

sofa,

rug.

similar

surface

that

might

block

the

vent

openings,

placed

built-in

installation,

such

bookcase

cabinet

that

might

impede

the

flow

air

through

the

ventilation

openings.

Grounding

Polarization

not

defeat

the

grounding

polarization

feature

the

power

cord.

your

receptacle

will

not

the

power

cord

plug,

contact

your

electrician

install

proper

receptacle.

When

not

use

unplug

the

power

cord

the

appliance

from

the

outlet

when

left

unused

for

long

period

time.

disconnect

the

cord,

pull

out

grasping

the

plug.

Never

pull

the

plug

out

the

cord.

♦

the

appliance

has

been

exposed

rain

moisture.

♦

the

appliance

does

not

appear

operate

normally

exhibits

marked

change

performance.

♦

the

appliance

has

been

dropped,

the

enclosure

damaged.

Wall

Celling

Mounting

your

appliance

can

mounted

wall

ceil¬

ing.

mount

only

recommended.

Receptacle

Check

make

sure

that

the

receptacle

holds

the

power

cord

plug

firmly

and

securely.

the

power

cord

plug

loose,

contact

your

electrician

replace

the

defective

and

unsafe

Foreign

Objects

careful

that

foreign

objects

and

liquids

not

enter

the

enclosure

through

openings.

not

attempt

service

the

appliance

beyond

that

described

the

operating

instructions.

For

all

other

servicing,

refer

qualified

service

personnel

only.

Congratulations!

Thank

you

for

buying

the

BBE

422A

Sonic

Maximizer.

You

now

own

very

unique

signal

processing

device

with

other

equal

the

audio

world.

Whether

you

purchased

the

BBE

422A

for

your

home

studio

club

P.A.

system,

you

will

find

the

unit’s

rugged

construction

and

careful

electronic

design

welcome

addition

your

audio

system.

This

manual

will

help

you

use

the

BBE

effectively

and

ways

which

you

may

not

aware.

Review

the

information

contained

this

manual

will

answer

most

the

common

questions

that

our

service

department

receives.

But

you

still

have

questions,

please

feel

free

call

(714)

897-6766.

The

BBE®

Process—^What

It”

Loudspeakers

have

difficulty

dealing

with

the

electronic

signals

supplied

amplifier.

These

difficulties

cause

such

major

phase

and

amplitude

distortion

that

the

sound

reproduced

speaker

differs

significantly

from

the

sound

pro¬

duced

the

original

source.

the

past,

these

problems

proved

unsolvable

and

were

thus

delegated

position

secondary

importance

audio

system

design.

However,

phase

and

amplitude

integrity

essential

accurate

sound

reproduction.

Research

shows

that

the

information

which

the

listener

translates

into

the

recognizable

characteristics

live

performance

are

Intimately

tied

into

complex

time

and

amplitude

relationships

between

the

fundamental

and

harmonic

components

given

musical

note

sound.

These

relationships

define

sound’s

“sound”.

When

these

complex

relationships

pass

through

speaker,

the

proper

order

lost.

The

higher

frequencies

are

delayed.

lower

order

frequency

may

reach

the

listener’s

ear

first

perhaps

simultaneously

with

that

higher

fre¬

quency.

some

cases,

the

fundamental

components

may

time-shifted

that

they

reach

the

listener’s

ear

ahead

some

all

the

harmonic

components.

This

change

the

phase

and

amplitude

relationship

the

harmonic

and

fundamental

frequencies

technically

called

“envelope

distortion.”

The

listener

perceives

this

loss

sound

integrity

the

reproduced

sound

“muddy”

and

“smeared.”

the

extreme,

can

become

difficult

tell

the

difference

among

musical

instruments,

for

example,

oboe

and

clarinet.

BBE

Sound,

Inc.

conducted

extensive

studies

numerous

speaker

systems

over

ten

year

period.

With

this

knowledge

became

possible

develope

ideal

speaker

and

distil!

the

corrections

necessary

return

the

fun¬

damental

and

harmonic

frequency

structures

their

correct

order.

While

there

are

differences

among

various

speaker

designs

the

magnitude

their

needs

for

correction,

the

overall

pattern

correction

needed

remarkably

consistent.

The

BBE®

process

unique

that

patents

have

been

awarded

the

U.S.

Patent

Office.

"How

Works”

The

BBE®

process

imparts

pre-determined

phase

correction

the

high

frequencies

where

most

harmonic

informa¬

tion

exists.

This

done

breaking

the

signal

into

three

sub-bands

groups:

the

low

frequency

group

which

crossed

over

150Hz,

the

mid-range

group

which

crossed

over

1200Hz

and

the

high

frequency

group

that

handles

every¬

thing

else

20kHz.

The

low

group

delayed

about

2.5

(milliseconds)

via

group

delay

within

passive

low

pass

filter.

The

front

panel

control

allows

for

either

flat

response,

cut

boost

the

lows

50Hz.

The

mid-range

group

delayed

only

about

0.5ms

and

passes

through

active

band-pass

filter

while

the

high

fre¬

quency

group

passed

through

high

quality

VGA

(Voltage

Controlled

Amplifier).

The

high

group

used

point

reference

make

dynamic

amplitude

corrections

both

positive

and

negative

directions

the

high

frequencies.

Two

RMS

average

loudness

detectors

continuously

monitor

both

the

mid-range

and

high

frequencies

compare

the

relative

harmonic

content

levels

the

two

bands

and

apply

the

appropriate

amount

control

voltage

the

VGA,

thereby

determining

the

amount

high

frequency

harmonic

content

present

the

final

output

the

BBE®

processor.

Product

Description

The

BBE

422A

intelligent

audio

processor

designed

solve

series

complex

problems

described

the

section.

is,

however,

very

simple

set-up

and

operate

and

once

installed

will

function

flawlessly

without

further

attention.

dual

channel,

rack-mountable

device

for

use

-lOdBu

unbalanced

line

level

applications

such

those

found

semi-professional

and

musical

instrument

applications.

The

BBE

422A

takes

one

EIA

standard

rack

space

inches

width

and

1.75

inches

height

(1U).

There

are

two

separate

channels

allow

for

either

full

stereo

program

two

independent

mono

channels:

house

P.A.

mix

feed

for

one

channel

and

the

stage

monitor

feed

for

the

other

channel.

BBE®

applies

different

phase

correction

algorithms

three

separate

frequency

bands.

The

variable

front

panel

control

allows

the

user

adjust

the

amount

process

desired.

Using

Your

New

BBE

422A

BBE®

process

added

before

ail

other

mixing

reverb,

special

effects

equalization

order

increase

the

clarity

and

intelligibility

the

program

material.

Unlike

many

aural

exciters

equalizers,

the

BBE

422A

does

not

add

any

extra

noise

harmonics

the

sound.

Thus,

there

will

future

problems

duplication

mastering

caused

aberrant

high

frequency

distortion.

Since

the

BBE®

technology

single-stage

process

there

need

for

encoding

decoding.

Always

“A-B”

the

processed

unprocessed

sound

with

the

Process

In/Out

Switch

adjust

the

amount

processing

required

suit

your

own

musical

tastes.

Things

Remember

The

BBE

422A

designed

work

-lOdBu

levels.

This

suitable

for

most

semi-pro

mixers,

P.A.

consoles,

home

stereos

disco

equipment.

The

BBE

422A

drives

load

impedances

down

about

Ohms

and

supplies

maximum

level

+16dBu.

Plugging

guitar

microphone

directly

into

the

BBE

422A

will

not

work,

the

output

level

much

too

low.

this

application,

BBE

411

can

used

accepts

low

level

devices.

the

program

material

has

excessive

background

noise,

the

noise

may

modulated

with

the

program.

this

case,

equalizer

some

type

noise

reduction

system

should

inserted

front

the

BBE

422A

roll

off

the

noise

first.

WARNING!

good

practice

turn

any

effects

boxes

such

BBE,

equalizers,

expanders,

surround

sound

accessories,

etc.,

and

the

preamp

BEFORE

turning

the

power

amplifier.

Otherwise

damage

the

speakers

and/or

amplifier

may

result.

The

Controls

Operation

the

BBE

422A

quite

simple

due

the

sophisticated

circuitry

within

the

unit.

Below

are

the

names

and

pur-

poses

each

control

the

BBE

422A.

Contour

Control

Doffinition

Control

Contour

LED

Stock

Function

Switch

Proceoo

Switch

Power

Switch

Front

Psnel

Each

channel

has

contour

control

that

regulates

the

amount

phase

compensated

bass

equalization.

This

adjustment

ranges

from

-12dBu

(fully

counterclockwise)

10dBu

(fully

clockwise)

50Hz

relative

the

input.

The

middle

position

flat

unity

gain.

Each

channel

has

definition

control

that

regulates

the

amount

amplitude

compensation

indicated

the

contour

LED

stack.

The

minimum

(fully

counterclockwise)

position

yields

flat

frequency

response

with

phase

compensation

only.

Turning

clockwise

increases

the

amplitude

the

high

frequency

band

relative

the

mid

band

amplitude

pro¬

viding

improved

spectral

balance

between

the

high

and

mid

bands.

Each

channel

equipped

with

set

LED

indicators

that

instantly

show

the

relative

amount

high

band

compensation

compared

the

mid

band.

RED

LED

(marked

“—”):

Compression

mode.

The

amplitude

the

high

band

too

high

compared

the

mid

band

and

compression

being

applied

compensate.

AMBER

LED

(marked

“O”):

Flat

mode.

amplitude

compensation

needed.

The

pro¬

gram

spectral

content

correct.

GREEN

LED

(marked

"+”):

Expansion

mode.

The

amplitude

the

high

band

too

low

compared

the

mid

band

and

the

amplitude

the

high

band

being

expanded

compensate.

CLIP

LED:

This

LED

indicates

that

the

input

the

BBE422A

has

reached

the

maximum

input

level

16dBu.

The

unit

equipped

with

function

push-button

switch

which

allows

for

quick

com¬

parison

processed

with

unprocessed

sound.

When

the

switch

depressed,

the

green

“In”

LED

lights.

When

the

switch

out,

the

amber

“Out”

LED

lights.

the

“Auto

”

mode,

the

BBE422A

provides

dynamic

response

the

high

frequency

band

relation

the

mid

band.

This

turn

will

allow

the

BBE

process

either

expand

com¬

press

the

high

band.

The

"Manual”

mode,

the

other

hand,

provides

for

factory

preset

expansion

ratio

for

the

high

band.

Both

modes

are

controlled

the

definition

and

lo-contour

controls.

“Auto”

mode

would

considered

normal

operation.

This

switch

controls

primary

power

the

BBE

422A.

Resr

P3nel

Power

Cord

Plugs

into

power

receptacle.

U.S.

Model,

100

ac,

50/60Hz.

Standard

Model,

200-

240Vac,

50/60HZ.

Fuse

Turn

cap

fuse

holder

counterclockwise

remove

fuse.

(Note:

For

U.S.

Model,

replace

with

250VAC,

VaA

Fastblow

type

fuse.

For

Standard

Model,

replace

with

250Vac,

.125A

Fastblow

type

fuse.)

Remote

«lsok

additional

”

jack

provided

for

remote

actuation

the

function

switch.

Any

push-on/

push-off

single

pole

switch

will

work

remote.

The

front

panel

function

switch

will

become

inoperative

when

the

remote

jack

utilized.

Hl-Z

Unbelenced

Each

channel

equipped

with

V4”

phone

jack

and

RCA

jack

that

high

impedance

RCA

Output

unbalanced

line

level

output

and

can

deliver

-h

16dBu

Into

10k

Ohms.

Hl-Z

Unbalanced

Va'*

Each

channel

equipped

with

”

phone

jack

and

RCA

jack

that

accepts

high

RCA

Input

impedance

unbalanced

line

level

input

with

average

level

-lOdBu.

(Note:

-l-16dBu

the

maximum

input

before

clipping.)

Set-Up

The

BBE

422A

connected

into

the

audio

chain

series

with

the

signal

path—the

same

way

graphic

equalizer

limiter

connected.

The

output

the

mixer,

pre-amp

tape

recorder

feeds

the

input

the

BBE

422A.

Remember,

source

outputs

connect

the

BBE’s

inputs

and

long

the

signal

source

level

within

the

nominal

range

mentioned

the

pre¬

vious

section,

the

BBE

422A

will

function

perfectly.

Setting-up

and

using

the

BBE

422A

echo

send

device

digital

reverb

not

recommended.The

processing

effect

not

fully

realized

when

the

output

the

BBE

422A

summed

with

the

original

source

audio.

The

BBE

422A

also

has

additional

quarter

inch

jack

for

remote

actuation

the

process

in/out

switch.

Any

single-pole,

single-throw

switch,

such

footswitch,

will

work.

FIGURE

LIVE

SOUND

SYSTEM

GUITAR

MICROPHONES

SYNTHESIZER

DIRECT

BOX

r@@

(§)

lr@x®T®x®i

111

MAIN

OUTPUTS

MIXING

CONSOLE

OUT

422A

POWER

AMPLIFIER

INPUTS

OUTPUTS

LOUDSPEAKER

FIGURE

POWERED

MIXER

SYSTEM

APPLICATION

MICROPHONES

FIGURE

RECORDING

HOME

STUDIO

APPLICATION

MICROPHONE

FIGURE

RECORDING

MIX

DOWN

4-TRACK

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