Roland Ap-700 User manual

Roland

ADVANCED

EQUALIZING

PROCESSOR

Ar

-

700)

Owner's

Manual

We'd

like

to

take

a

moment

to

thank

you

for

purchasing

the

Roland

AP-700

Advanced

Equalizing

Processor.

In

order

to

fully

realize

the

potential

of

the

AP-700,

and

to

ensure

years

of

trouble-free

operation,

please

take

the

time

to

read

this

manual

thoroughly.

O

CAUTION

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

A

ATTENTION.

risus

b&

choc

ELECTRIQUE

NE

PAS

QUVAIR

CAUTION:

TO

REDUCE

THE

RISK

OF

ELECTRIC

SHOCK,

DO

NOT

REMOVE

COVER

(OR

BACK).

NO

USER-SERVICEABLE

PARTS

INSIDE.

REFER

SERVICING

TO

QUALIFIED

SERVICE

PERSONNEL.

The

lightning

flash

with

arrowhead

symbol,

within

an

equilateral

triangle,

is

intended

to

alert

the

user

to

the

presence

of

uninsulated

“dangerous

voltage”

within

the

product's

enclosure

that

may

be

of

sufficient

magnitude

to

constitute

a

risk

of

electric

shock

to

persons.

A

The

exclamation

point

within

an

equilateral

triangle

is

intended

to

alert

the

user

to

the

presence

of

important

operating

and

maintenance

(servicing)

instructions

in

the

literatura

accompanying

the

product.

INSTRUCTIONS

PERTAINING

TO

A

RISK

OF

FIRE,

ELECTRIC

SHOCK,

OR

INJURY

TO

PERSONS.

IMPORTANT

SAFETY

INSTRUCTIONS

SAVE

THESE

INSTRUCTIONS

WARNING

-

When

using

electric

products,

basic

precautions

should

always

be

followed,

including

the

following:

1.

Read

all

the

instructions

before

using

the

product.

2.

Do

not

use

this

product

near

water

—

for

example,

near

a

bathtub,

washbowl,

kitchen

sink,

in

a

wet

basement,

or

near

a

swimming

pool,

or

the

like.

3.

This

product

should

be

used

only

with

a

cart

or

stand

that

is

recommended

by

the

manufacturer.

4.

This

product,

either

alone

or

in

combination

with

an

amplifier

and

headphones

or

speakers,

may

be

capable

of

producing

sound

levels

that

could

cause

permanent

hearing

loss.

Do

not

operate

for

a

long

period

of

time

at

a

high

volume

level

or

at

a

level

that

is

uncomfortable.

If

you

experience

any

hearing

loss

or

ringing

in

the

ears,

you

should

consult

an

audiologist.

5.

The

product

should

be

located

so

that

its

location

or

position

does

not

interfere

with

its

proper

ventilation.

6.

The

product

should

be

located

away

from heat

sources

such

as

radiators,

heat

registers,

or

other

products

that

produce

heat.

7.

The

product

should

be

connected

to

a

power

supply

only

of

the

type

described

in

the

operating

instructions

or

as

marked

on

the

product.

8.

The

power-supply

cord

of

the

product

should

be

unplugged

from

the

outlet

when

left

unused

for

a

long

period

of

time.

9.

Care

should

be

taken

so

that

objects

do

not

fall

and

liquids

are

not

spilled

into

the

enclosure

through

openings.

10.The

product

should

be

serviced

by

qualified

service

personnel

when:

A.

The

power-supply

cord

or

the

plug

has

been

damaged;

or

B.

Objects

have

fallen,

or

liquid

has

been

spilled

onto

the

product;

or

C.

The

product

has

been

exposed

to

rain;

or

D.

The

product

does

not

appear

to

operate

normally

or

exhibits

a

marked

change

in

performance;

or

E.

The

product

has

been

dropped,

or

the

enclosure

damaged.

11.Do

not

attempt

to

service

the

product

beyond

that

described

in

the

user-maintenance

instructions.

All

other

servicing

should

be

referred

to

qualified

service

personnel.

For

the

USA

This

product

may

be

equipped

with

a

polarized

line

plug

(one

blade

wider

than

the

other)

.

This

is

a

safety

feature.

If

you

are

unable

fo

insert

the

plug

into

the

outlet,

contact

an

electrician

to

replace

your

obsolete

outlet.

Do

not

defeat

the

safety

purpose

of

the

plug.

For

Polarized

Line

Plug

CAUTION:

For

Canada

TO

PREVENT

ELECTRIC

SHOCK,

MATCH

WIDE

BLADE

OF

PLUG

TO

WIDE

SLOT,

FULLY

INSERT.

ATTENTION:

pour

éviter

Les

CHOCS

ELECTRIQUES,

INTRODUIRE

LA

LAME

LA

PLUS

LARGE

DE

LA

FICHE

DANS

LA

BORNE

CORRESPONDANTE

DE

LA

PRISE

ET

POUSSER

JUSQU’

AU

FOND.

For

the

U.K.

IMPORTANT:

THE

WIRES

IN

THIS

MAINS

LEAD

ARE

COLOURED

IN

ACCORDANCE

WITH

THE

FOLLOWING

CODE.

BLUE:

NEUTRAL

BROWN:

LIVE

As

the

colours

of

the

wires

in

the

mains

lead

of

this

apparatus

may

not

correspond

with

the

coloured

markings

identifying

the

terminals

in

your

plug,

proceed

as

follows:

The

wire

which

is

coloured

BLUE

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

N

or

coloured

BLACK.

The

wire

which

is

coloured

BROWN

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

L

or

coloured

RED.

Under

no

circumstances

must

either

of

the

above

wires

be

connected

to

the

earth

terminal

of

a

three

plug.

Main

Features

............00+

cadastbasteeucbrbsenucsulrouernessacstsensiebes

4

important

Notes

Overview

of

the

AP-700

..........cssssccsssssrsssssecsesseonssseesace

5

How

to

Use

This

Manual

..........s:sccsssscssescnssssccssnsensncees

5

Part

Names

and

FUN

ction

.........ccsscccscscssecnesccsesenesseeere

6

Section

1:

Basic

Operation

Making

the

Connections

...........csssssssessssssneeseeessesesseeses

7

Use

with

a

Specific

Microphone

or

Instrument.............-

7

Use

with

an

Entire

PA

System

uu...

ccc

esseceeseeeeseneeeereeeees

8

Use

in

the

AFB

Mode

with

a

Number

of

Microphones

..........csscsecscseecnseeeeseees

8

Powerup

and

Standby.

.............ccssecssesecssscssserscenseeeonees

8

Switching

On

the

Power

Adjusting

the

Input

Level

BYPASS

oss

ccoscssasdesecasesinsocsvaspsssoessacesacsoucdusstysonsecesseadenesnts

LOCK

35sec

cui

caces

ite

cteaa

avian

tatececsedisesattissead

leaceseastumesudeviey

Choosing

Parameter

.......scssscssscssessesscevseeassssseecscsensens

9

About

the

Notation

for

Parameter

Selection

............s.0

9

Choosing

the

MOde...........ssessessssscesssessesssecsensscasees

10

Section

2:

How

to

Use

the

AFB

Mode

About

the

AFB

Mode

..........ccscsscsscssesesssecsssnsssseseressenes

11

Functions

of

the

AFB

Mode

........cscssessesseeesecsestenerseees

1

About

the

Display

on

the

Analyzer/Filter

Screen..........

11

Basic

USAgC........cssccsssecessssecesrsencsnseseesseseesonseceseseeaseees

12

Manual

On/Off

Switching.......ccsessscsesessssseseccseseeeees

13

MUG

es

coissbaceheoudstncssseresssscssaasscussdvasaascasssebiubscsasedanéintsess

13

Switching

the

Display

(FILTER

and

ANALYZE)...........-.

13

Zoom/Scroll

for

the

Display

.........scccssescssererseseeseesees

13

Section

3:

How

to

Use

the

PEQ

Mode

About

the

PEQ

MOde.........sscsccccsssccsscsesrssesscsssssensesees

14

About

the

Display

on

the

Analyzer/Filter

Screen..........

14

BaSiC

USAC...

ccsecsessesecnsecerscsscsseeeseensesessesseseneensseenee

14

Switching

the

Display

(FILTER,

91BAND,

and

31BAND).......ccccsesecseeereeeeens

15

Zoom/Scroll

for

the

Display

...........sssssesstseceseerseeteeeeee

15

Section

4:

How

to

Use

the

GEQ

Mode

About

the

GEQ

Mode

.......s.sccscccssssssccssssecssessersessnsees

16

About

the

Display

on

the

Filter

Screen......sssssesseeeee

16

Basic

USage.....scccsssseserssssenesecscerseceesrasenesesssssessesessserees

16

Zoom/Scroll

for

the

Display

........csesssssscsseeeseesereees

16

Section

5:

Editing

in

the

AFB

Mode

...........csesssssscsssssestsssecrseesese

17

QUICK

-Editicscccscehed

a

wesc

vascveddscecesescs

Lebisebbect

tasted

dedatesanses

17

HPF

and

LPF

Settings.........ssssecssesseesserrscenensrsseecsens

18

Initializing

the

AFB

Mode

........sesscsssseseesseseesereeeenssrens

18

AUtO

FUNCHION.....cceeseescssenseereessneessenenescessnecssentertesesenens

18

Dynamic

FUNCtION........cccsecsesscscesescsesrerssensreeereneanenseens

19

Diffuse

FUNCION

wo...

ccceeeseserseteesenscaaeeseseteeerseerenees

19

Mute

FUNCTION

.....

ccc

eeseescceessesssseessecesscneeenesesneveaseanens

19

Editing

in

the

PEQ

MOde.........c.sscssscsssessessseesseneseeenes

19

HPF

and

LPF

Settings.......ccccsescesessessesersereneneseetenseeees

19

Initializing

the

PEQ

MOde........sssscsseereeresseerseseeressens

19

Editing

in

the

GEQ

Mode

..........ccscssssscssssersserseseessecnes

20

HPF

and

LPF

Settings.........ccsssssesscscssesreesesersereseseeaes

20

Initializing

the

GEQ

MOde......sceesseseceesseeessenenterenees

20

Common

Operations

for

All

Modes

.........s:sssecseesesers

20

HPF

and

LPF

Settings

(Common

for

All

Modes)

...........

20

Zoom/Scroll

for

the

Display

(Common

for

All

MOdeS)

......s:ssccsssssesseetsceesetetseeenensees

21

Editing

System

Parameters..........scsessesresressseenseresserers

21

Audio

I/O

(Audio

Input

and

Output)...

seen

21

DUM

AY

is

cchdasccdscletceaceNaeeeG

eesncesecvassuieesesaxsnesecdacseseaesttonss

22

Displaying

the

Software

Version

.......ssssccsesseesereererees

22

Displaying

Temporary

Information

........csseseereeeerees

22

Adjusting

the

Contrast

of

the

Display

.........csescscsseseee

22

UNIAN

ZG

aiceccccnadccevsessbctesczedeeeusbestesscvqnsdevaseesbnsceensendveotes

22

Memory

FUNCTION

.......sssssescerseseereesersersseeerees

nsanwasiaen

23

Storing

Settings

(SAVE)

.......ccsscesesessseetsesssseseeeseeseees

23

Calling

Up

a

Patch

(L0ad).......cscessseseeressessereneseteees

23

Section

6:

_How

to

Use

MIDI

What

Can

You

Do

with

MIDI2............ccscsecssenseneenenes

24

Settings

for

MIDI

FUNCTIONS

.......s.scccsssesceescrersreserees

24

Settings

for

the

Program

Change

Map

.

stsenesesesassenssernns

24

Settings

for

the

Control

Change

Map........csssssscseres

25

Sending

Data

(Bulk

Dump)........csssrsssescsreressenaneees

25

Receiving

Data

(Bulk

Load)...........sssccscssscsresesreereenes

26

Section

7:

Supplementary

Materials

If

You

Think

There

May

Be

a

Problem,

Check

Here

First............ssecssssssssostoverscesonsssevenrernnsnsaee

27

List

of

Display

Messages

.........sssssessesesssersesesscesenenees

27

About

Digital

Input

and

Output..............ecssssrcssserseres

28

About

Channel

Status

...ccccccsessseresseecrensscsssaseeeseeeens

28

important

Points

When

Using

Digital

Input

...............

28

Equalizer

Characteristics

........sccsccssscssssceseseccescesossrees

29

Parameter

Table.............scssssserssesscrcsssesccessensenssvacsnenee

35

MIDI

Implementation

Chart

............sscscseseesenseenneenes

36

Main

Specifications............ccscsscssssssscseesessesesnensesoeses

37

INDOX....cecsscesseseconscsessessensensenssussnscarservsussseensesseossusevess

38

Copyright

©

1995

Roland

Corporation

All

rights

reserved.

No

part

of

this

publication

may

be

reproduced

in

any

form

without

the

written

permission

of

ROLAND

CORPORATION.

Anti-Feedback

Mode

Points

where

feedback

(howling)

occurs

are

detected

auto-

matically,

and

a

selected

filter

is

applied

to

the

frequency

response

at

those

points

to

eliminate

the

feedback.

18-Band

Parametric

Equalizer

Mode

You

can

use

the

AP-700

as

a

parametric

equalizer

with

up

to

18

bands.

Curves

showing

frequency

response

appear

on

the

display.

Graphic

Equalizer

Mode

This

mode

makes

it

possible

to

use

the

AP-700

as

a

91-

band

monaural

equalizer

or

a

31-band

stereo

equalizer.

The

equalizer

settings

can

be

confirmed

on

the

display

as

they

are

made.

Spectrum

Analyzer

Function

The

AP-700

features

a

spectrum

analyzer

function.

This

works

as

a

91-band

analyzer,

showing

the

level

of

each

band

on

the

display

(not

available

in

the

GEQ

mode).

Diffuse

Function

This

applies

a

slow

modulation

that

is

inaudible

to

the

human

ear

to

help

suppress

feedback

and

coloration

(AFB

mode

only).

High-Pass

Filter

(HPF)

and

Low-Pass

Filter

(LPF)

The

HPF

and

LPF

can

be

used

to

cut

unwanted

frequency

bands.

Digital

|/O

Jacks

The

AP-700

is

equipped

with

cannon

type

digital

I/O

jacks

that

conform

to

AES/EBU

standards.

In

addition

to

the

items

listed

under

Safety

Precautions

inside

the

front

cover,

please

read

and

observe

the

follow-

ing:

Power

Supply

*

Before

connecting

this

unit

to

other

devices,

turn

off

the

power

to

all

units;

this

will

help

prevent

damage

or

mal-

function.

*

Do

not

use

this

unit

on

the

same

power

circuit

with

any

device

that

will

generate

line

noise;

an

electric

motor

or

variable

lighting

system

for

example.

Placement

*

Using

the

unit

near

power

amplifiers

(or

other

equipment

containing

large

power

transformers)

may

induce

hum.

*

This

device

may

interfere

with

radio

and

television

recep-

tion.

Do

not

use

this

device

in

the

vicinity

of

such

receivers.

Maintenance

¢

For

everyday

cleaning

wipe

the

unit

with

a

soft,

dry

cloth

or

one

that

has

been

slightly

dampened

with

water.

To

remove

stubborn

dirt,

use

a

mild,

non-abrasive

detergent.

Afterwards,

be

sure

to

wipe

the

unit

thoroughly

with

a

soft,

dry

cloth.

¢

Never

use

benzene,

thinners,

alcohol

or

solvents

of

any

kind,

to

avoid

the

possibility

of

discoloration

and/or

defor-

mation.

Additional

Precautions

*

Protect

the

unit

from

strong

impact.

¢

A

small

amount

of

heat

will

radiate

from

the

unit

during

normal

operation.

¢

Before

using

the

unit

in

a

foreign

country,

consult

with

qual-

ified

service

personnel.

Memory

Backup

*

This

unit

contains

a

battery

which

powers

the

unit’s

memory

circuits

while

the

main

(AC)

power

is

off.

The

expected

life

of

this

battery

is

3

years

or

more.

However,

to

avoid

the

untimely

loss

of

memory

data,

it

is

strongly

recommended

that

you

change

the

battery

every

3

years.

Please

be

aware

that

the

actual

life

of

the

battery

will

depend

upon

the

phys-

ical

environment

—

especially

the

temperature

—

in

which

the

unit

is

used.

When

it

is

time

to

change

the

battery,

con-

sult

with

qualified

service

personnel.

When

the

battery

becomes

weak

the

following

message

will

appear

in

the

display:

"Battery

Low

Please

Change."

Please

change

the

battery

as

soon

as

possible

to

avoid

the

loss

of

memory

data.

Please

be

aware

that

the

contents

of

memory

may

at

times

be

lost;

when

the

unit

is

sent

for

repairs

or

when

by

some

chance

a

malfunction

has

occurred.

Important

data

should

be

stored

in

another

MIDI

device

(eg.,

a

sequencer),

or

writ-

ten

down

on

paper

(if

possible).

During

repairs,

due

care

is

taken

to

avoid

the

loss

of

data.

However,

in

certain

cases

(such

as

when

circuitry

memory

itself

is

out

of

order),

we

regret

that

it

may

not

be

possible

to

restore

the

data.

The

AP-700

is

equipped

with

the

following

three

modes.

Select

the

mode

according

to

what

you

wish

to

do.

See

"Choosing

the

Mode"

(p.

10)

if

you

need

more

information

on

how

to

select

a

mode.

AFB

(Anti-Feedback)

Mode

This

mode

is

used

to

eliminate

feedback

(howling)

generat-

ed

in

a

sound

reinforcement

system

where

a

microphone

is

in

use.

PEQ

(Parametric

Equalizer)

Mode

This

functions

as

a

parametric

equalizer

that

allows

settings

for

up

to

18

bands.

You

can

set

the

frequency,

Q,

and

level

for

each

band.

GEQ

(Graphic

Equalizer)

Mode

This

mode

allows

use

as

a

91-band

monaural

or

31-band

stereo

equalizer.

The

equalizer

settings

can

be

confirmed

on

the

display

as

they

are

made.

This

manual

is

divided

into

two

parts:

items

that

are

com-

mon

to

all

modes,

and

items

that

are

required

for

individ-

ual

modes.

At

the

end

of

the

manual

there

is

an

alphabetical

index.

This

index

may

be

helpful

if

you

come

across

any

words

you

don't

understand

as

you

follow

the

procedures

described

in

this

manual.

Here

is

what

is

covered

in

each

of

the

sections.

Section

1:

Basic

Operation

This

section

explains

installation

and

operation

procedures

that

are

common

to

all

of

the

modes.

Section

2:

How

to

Use

the

AFB

Mode

This

section

provides

an

overview

of

the

AFB

mode

and

describes

its

steps

of

operation.

Section

3:

How

to

Use

the

PEQ

Mode

This

section

describes

the

steps

of

operation

for

the

PEQ

mode.

Section

4:

How

to

Use

the

GEQ

Mode

This

section

describes

the

steps

of

operation

for

the

GEQ

mode.

Section

5:

Editing

This

section

describes

the

parameters

that

can

be

changed

in

each

mode,

and

explains

how

to

make

these

changes.

Section

6:

How

to

Use

MIDI

This

section

explains

how

to

control

the

AP-700

when

using

an

external

MIDI

instrument,

and

how

to

send

and

receive

MIDI

data.

You

should

read

this

section

if

you

want

to

make

use

of

MIDI

functions.

Section

7:

Supplementary

Materials

This

section

provides

a

list

of

the

messages

that

appear

dur-

ing

operation,

and

explains

what

each

means.

It

also

con-

tains

materials

on

the

specifications

of

the

AP-700.

Front

Panel

LOCK

Button

MANUAL

Button

DYNAMIC

Button

AUTO

Button

Value

Buttons(UP,

DOWN)

ENTER

Button

EXIT

Button

MIDI

Indicator

POWER

Switch

NOE

SUALIFING

PROCESSORS

©

Roland

Ar-700

~

LiNmuT

A

ase,

oe

INPUT

LEVEL

Knobs

L,R

Display

Cursor

Buttons

INPUT

Level

Indicator

CLEAR

Button

DIFFUSE

Button

MUTE

Button

BYPASS

Button

Rear

Panel

DIGITAL

/O

Connectors(IN,OUT)

OUTPUT

Jacks(L,R)

MIDI

Connectors(IN,OUT)

INPUT

Jacks(L,R)

Section

1:

Making

the

Connections

The

AP-700

can

be

connected

up

in

various

ways

depend-

ing

on

how

it

is

to

be

used.

Refer

to

the

example

setups

that

are

given

in

the

following.

*

When

making

the

connections,

be

sure

that

the

volume

on

your

amp

is

turned

down

all

the

way,

and

that

all

equip-

ment

is

switched

off.

Equipment

may

be

damaged

if

can-

nected

while

the

power

is

on.

*

Set

the

input

and

output

level

for

the

equipment

being

con-

nected

to

"+4

dBm."

*

For

the

input

jacks,

the

1/4

inch

phone

jacks

take

priority

over

other

types.

*

Do

not

connect

the

AP-700

to

the

output

of

a

power

amp.

*

The

1/4

inch

phone

jacks

support

balanced

input using

a

stereo

plug.

HOT

O——~,

COLD

—

|

GROUND

The

assignment

for

the

XLR

connectors

is

as

follows:

Before

making

any

connections,

confirm

assignment

compatibility

with

all

other

devices.

*

1:GND

2:COLD

3:HOT

Use

with

a

Specific

Microphone

or

Instrument

This

is

an

example

of

a

connection

that

uses

the

AP-700

with

only

a

specific

microphone

or

instrument.

When

connecting

the

microphone

to

the

AP-700,

make

the

connection

through

a

preamp

or

use

the

channel

insertion

for

a

mixer

to

match

up

the

input

and

output

levels

for

the

connection.

Pre

Amplifier

~"

Power

Amplifier

Speakers

*

You

will

not

be

able

to

obtain

the

intended

results

if

a

microphone

is

connected

directly

to

the

AP-700.

Use

with

an

Entire

PA

System

When

using

the

AP-700

with

all

of

the

equipment

that

is

connected

to

the

mixer,

connect

the

output

from

the

mixer

to

the

AP-700.

Speakers

Use

in

the

AFB

Mode

with

a

Number

of

Microphones

Mix

all

of

the

microphones

with

a

small

mixer

before

they

connect

with

the

AP-700.

ini

-

=

"Bower

Amplifier

Speakers

Powerup

and

Standby

Switching

On

the

Power

First

check

the

connections

with

the

external

equipment,

and

then

switch

on

the

AP-700.

The

display

flashes,

and

the

AP-700

returns

to

the

state

in

effect

when

the

power

was

last

switched

off.

Ea

EDIT

SS

PEAKE

-~-

Hz

Cidid:

4/4]

FILT|

i]

-12

“24

100

200

S00

ik

@k

Sk

10k

20k

*

Adjust

the

volume

for

the

amp

after

switching

on

all

other

equipment.

*

To

protect

its

internal

circuitry,

the

AP-700

will

not

func-

tion

for

a

short

while

after

the

power

is

switched

on.

.

When

the

power

is

not

on,

signals

input

to

the

AP-700

are

output

without

change.

*

The

display

may

be

hard

to

make

out

when

installed

in

cer-

tain

positions.

If

this

is

the

case,

adjust

the

contrast

of

the

display

(p.

22).

Adjusting

the

Input

Level

The

INPUT

LEVEL

knob

should

normally

be

left

at

"O"

dur-

ing

use.

The

"0"

position

is

for

uni-gain,

so

the

input

and

output

levels

will

be

identical.

You

will

need

to

use

the

INPUT

LEVEL

knob

to

adjust

the

input

level

if

the

"OVER"

segments

in

the

level

indicator

light

up,

or

if

the

input

level

is

too

low.

C)

Roland

Ar-700

ADVANCED

EQUALIZING

INET

Level

L

INPUT

A

*

The

input

levels

for

the

left

and

right

channels

can

be

set

independently.

Bypass

If

you

want

direct

output

of

the

input

sound,

turn

on

Bypass.

Each

press

of

the

[BYPASS]

button

toggles

Bypass

on

or

off.

The

button's

indicator

lights

up

when

Bypass

is

on.

*

In

the

AFB

mode,

be

sure

to

turn

down

the

volume

for

your

speaker

system

to

a

low

enough

level

before

turning

on

Bypass,

or

feedback

(howling)

may

occur.

Lock

The

Lock

function

can

be

switched

on

to

protect

the

set-

tings

and

prevent

them

from

being

changed

if

the

panel

buttons

are

inadvertently

pressed.

To

switch

on

the

Lock:

Hold

down

the

[LOCK]

button

for

more

than

two

seconds.

The

button's

indicator

lights

up

and

the

unit

is

locked.

To

release

the

Lock:

Hold

down

the

[LOCK]

button

for

more

than

two

seconds.

The

button's

indicator

goes

out

and

the

lock

is

released.

Choosing

Parameters

You

can

change

the

functioning

of

the

AP-700

by

varying

the

parameter

settings.

Here's

how

to

choose

the

desired

parameter

and

change

its

setting.

1.

Use

the

cursor

buttons

and

the

(ENTER)

button

to

switch

parameters

until

the

desired

parameter

appears

on

the

display.

2.

When

the

parameter

you

want

is

shown

on

the

display,

move

the

cursor

to

the

parameter.

3.

Use

the

VALUE

buttons

to

change

the

setting.

About

the

Notation

for

Parameter

Selection

The

explanations

in

this

manual

skip

a

description

of

the

procedure

you

need

to

follow

to

show

the

desired

parame-

ter

on

the

display.

Example:

Adjusting

the

HPF

Frequency

for

the

AFB

Mode

MENU

>

AFB

mode

>

HPF/LPF>

The

actual

operation

for

this

procedure

is

as

follows.

].Use

the

cursor

buttons

to

move

the

cursor

to

(MENU),

then

press

(ENTER).

FE

|

PEAK?

«2

>

Hz

Cidvid:

4744

FILT

12

4

igo 200

«500

ik

@k

Sk

10k

20%

2.Use

the

cursor

buttons

to

move

the

cursor

to

(AFB

mode)

and

press

(ENTER).

SYSTEM

MEMORY

PEQ

mode

MIDI

GEQ

mode

3.Use

the

cursor

buttons

fo

move

the

cursor

to

(HPF/LPF)

and

press

(ENTER).

wees

ER

mode

sess

AUTO/“DYNA

~=LINK

RESERVE

DIFFUSE

EDIT

MUTE

HPF/LPF

4.

Use

the

cursor

buttons

to

move

the

cursor

to

the

HPF

frequency

and

adjust

the

setting

with

the

VALUE

buttons.

88.

GHz

OFF

aa:

ame:

S.Q6KHz

OFF

*

The

starting

point

for

these

operations

is

the

Analyzer/Filter

screen.

No

matter

what

mode

you're

in,

you

can

get

to

the

Analyzer/Filter

screen

by

pressing

the

[EXIT]

button

repeatedly

—

the

Analyzer/Filter

screen

is

the

last

screen

to

appear.

*

This

manual

contains

a

"Parameter

Table"

that

shows

the

structure

of

the

parameters.

*

Manipulation

of

a

setting

causes

the

contents

of

the

setting

to

switch

with

each

change.

*

Each

press

of

the

[EXIT]

button

causes

the

display

to

go

back

one

screen.

The

contents

of

settings

(or

changes)

are

retained.

10

Choosing

the

Mode

Choose

whichever

one

of

the

three

modes

that

you

wish

to

use.

MENU

P

The

mode

that

is

highlighted

in

the

display

is

the

currently

selected

mode.

1.

Using

the

cursor

buttons,

move

the

cursor

to

(MENU),

then

press

(ENTER).

2.

Move

the

cursor

to

the

mode

you

want

to

use.

AFB

mode:

AFB

(Anti-Feedback)

mode

PEQ

mode:

PEQ

(Parametric

Equalizer)

mode

GEQ

mode:

=

GEQ

(Graphic

Equalizer)

mode

3.

Press

(ENTER).

As

shown

below,

a

message

asking

you

to

confirm

the

change

in

mode

appears

on

the

display.

(The

actual

mes-

sage

varies

according

to

the

modes

being

changed.)

GEQ

process

will

function

instead

of

AFB

rrocess

CAHCEL

4.Press

(ENTER)

to

go

ahead

and

change

the

mode.

If

you

want

fo

start

over,

move

the

cursor

to

(CANCEL)

and

press

(ENTER).

Section

2:

How

to

About

the

AFB

Mode

The

AFB

mode

uses

a

filter

with

an

extremely

high

Q

to

eliminate

feedback

(howling)

occurring

in

a

sound

rein-

forcement

system

that

uses

a

microphone,

and

keep

fluctu-

ations

in

the

sound

quality

to

a

minimum.

The

AFB

mode

performs

compensation

to

minimize

fluctu-

ations

in

sound

quality,

but

this

does

not

mean

that

no

changes

at

all

occur

in

the

sound

quality.

As

the

number

of

points

at

which

feedback-suppression

points

increases,

the

sound

quality

also

gradually

changes.

Fluctuations

in

sound

quality

can

be

kept

to

a

minimum

by

using

the

AFB

mode

after

first

positioning

the

sound

reinforcement

device

so

as

to

reduce

the

chance

of

feedback

occurring.

Functions

of

the

AFB

Mode

The

AFB

mode

offers

the

following

functions

for

eliminat-

ing

feedback.

e

Auto

Function

This

function

is

suited

to

eliminating

feedback

during

sound

checks.

The

Auto

function

automatically

searches

for

the

feedback

point

(the

frequency

at

which

feedback

occurs),

and

sets

up

a

filter

to

correct

the

frequency

response

at

that

point

and

eliminate

feedback.

¢Dynamic

Function

This

function

eliminates

sudden

feedback

occurring

because

of

changes

in

the

sound

production

environment,

or

other

factors

such

as

the

microphone

being

moved.

Like

the

Auto

function,

the

Dynamic

function

is

automatic.

¢Manual

Function

The

Manual

function

can

be

used

to

switch

filters

on

or

off.

e

Diffuse

Function

The

Diffuse

function

applies

slow,

inaudible

modulation

to

suppress

feedback

and

coloration.

This

function

is

particularly

effective

in

suppressing

feed-

back

and

coloration

in

the

treble

range.

e

Mute

Function

The

Mute

function

can

be

switched

on

when

you

want

to

lower

the

output

level.

Parameters

for

setting

the

mute

level

are

available.

In

addition

to

these

five

functions,

the

AFB

mode

also

offers

the

following

functions.

e

Spectrum

Analyzer

This

works

as

a

91-band

analyzer,

showing

the

frequency

response

of

the

input

sound

on

the

display.

Zoom

and

Scroll

can

be

used

to

switch

the

frequency

range

or

level

being

monitored.

eHigh-Pass

Filter

(HPF)

and

Low-Pass

Filter

(LPF)

Settings

These

allow

the

AFB

mode

to

be

used

more

effectively

in

the

required

frequency

bands

by

cutting

unnecessary

fre-

quency

bands.

About

the

Display

on

the

Analyzer/Filter

Screen

The

following

information

appears

on

the

Analyzer/Filter

screen

for

the

AFB

mode.

"AUTO":

The

Auto

function

is

in

operation

"DYNA":

The

Dynamic

function

is

in

operation

"AFB":

A

function

other

than

the

foregoing

v

two

is

in

operation

(AFB

mode)

TAFE

|

PEAK

EL.

OOKHz

Cidta:

4749

FILT

Leve

o

(dB)

||

-12

“24

100

200

S00

ik

2k Sk

10k

20k

=

———_

OS

Frequency

(Hz)

"AUTO"

Example:

A-1

1.00

kHz

-3.0

dBm

13/14

Filters

set

by

the

Auto

function,

and

numbers

of

remaining/reserve

filters

"DYNA"

Example:

D-1

1.00

kHz

-3.0

dBm

3/4

Filters

set

by

the

Auto

function,

and

numbers

of

remaining/reserve

filters

"AFB"

Example:

PEAK

1.00

kHz

[14/14

:

4/4]

Peak

point

and

numbers

of

remaining/reserve

filters(Auto:

Dynamic)

5k

ik

20k

Frequency

(Hz)

Peak

Point

1

“EE

S00H

1.0066

[M=4)

peakIne

@=

2.5

[ee

A

SO

|

FILT,

4

Low

shelving

gi

High

shelving

Display

of

the

center

frequency

for

the

peaking

filter

>

Basic

Usage

This

section

describes

the

simple

steps

that

are

needed

for

operation

using

the

AFB

mode.

Practical

applications

such

as

independent

use

for

the

left

and

right

channels

(Link

Off),

as

well

as

the

following

items,

are

described

in

"Section

5:

Editing."

Take

a

look

at

that

section

if

this

is

what

you

need.

Quick

Edit

HPF

and

LPF

settings

initialization

In

the

steps

described

below,

it

is

assumed

that

you

have

already

set

up

and

connected

your

equipment.

Also,

check

to

make

sure

that

the

indicators

for

the

[BYPASS]

and

[MUTE]

buttons

are

not

lit

up.

If

either

one

is

lit,

press

the

corresponding

button

to

make

the

indicator

go

out.

1.

Clear

any

filters

set

by

the

Auto

function.

You

can

skip

this

step

if

the

indicator

for

the

[CLEAR]

but-

ton

is

lit

up.

Me

jo

|

vee

ema

|

mn

|

ia

ai

|

1-1

]-1

Press

(CLEAR).

The

display

changes

to

show

a

message

confirming

that

the

filters

set

by

the

Auto

function

are

to

be

cleared.

]-2

To

clear

the

filters,

press

(ENTER).

If

you

want

to

start

over,

move

the

cursor

to

(CANCEL)

and

press

(ENTER).

The

indicator

for

the

[CLEAR]

button

lights

up.

All

filters

set

by

the

Auto

function

are

cleared.

2.

Eliminate

feedback

with

the

Auto

function.

2-1

Press

(AUTO)

once.

The

button's

indicator

flashes

to

show

that

the

Auto

func-

tion

is

working.

2-2

Gradually

increase

the

volume

of

the

sound

reinforcement

system.

As

the

volume

rises

and

feedback

occurs,

the

AFB

mode's

Auto

function

automatically

sets

up

filters

and

eliminates

the

feedback.

The

indicator

for

the

[CLEAR]

button

goes

out

as

soon

as

even

one

filter

is

set.

2-3

Increase

the

volume

to

the

desired

level

and

press

(AUTO).

The

indicator

for

the

[AUTO]

button

goes

out

and

the

Auto

function

is

ended.

You

can

change

the

settings

for

the

filters

set

by

the

Auto

function.

The

way

to

do

this

is

the

same

as

for

Quick

Edit.

See

"Quick

Edit"

(p.

17)

for

details.

3.

Use

the

Dynamic

function

to

guard

against

sud-

den

feedback.

Even

after

feedback

has

been

eliminated

by

the

Auto

func-

tion,

feedback

may

still

occur

because

of

changes

in

the

sound

production

environment,

or

if

a

microphone

is

moved.

To

take

care

of

this,

you

can

suppress

sudden

feed-

back

with

the

Dynamic

function

while

leaving

the

settings

for

the

Auto

function

in

place.

*

When

the

number

of

filters

that

the

Dynamic

function

sets

up

exceeds

its

pre-assigned

number

of

filters,

the

Dynamic

function

clears

the

first

filter

in

order

to

set

up

a

new

one.

*

All

filters

established

by

the

Dynamic

function

are

cleared

when

the

function

is

switched

off.

3-1

[sm

[a

age

£0

J

co)

Cy

ure

ayPaaa

cur

5

i

I:

3-1

Press

(DYNAMIC)

once.

The

button's

indicator

lights

up

to

show

that

the

Dynamic

function

is

working.

Each

press

of

the

[DYNAMIC]

button

toggles

the

Dynamic

function

on

or

off.

When

the

Dynamic

function

is

on,

its

button

indicator

lights

up.

If

feedback

occurs,

the

Dynamic

function

automatically

compensates

the

frequency

response

and

eliminates

the

feedback.

12

4.

Use

the

Diffuse

function.

4-1

Press

(DIFFUSE)

once.

The

button's

indicator

lights

up

to

show

that

the

Diffuse

function

is

working.

Each

press

of

the

[DIFFUSE]

button

toggles

the

Diffuse

function

on

or

off.

When

the

Diffuse

function

is

on,

its

but-

ton

indicator

lights

up.

Manual

On/Off

Switching

You

can

use

the

Manual

function

to

switch

on

or

switch

off

the

filters

that

have

been

set.

Each

press

of

the

[MANUAL]

button

toggles

the

Manual

function

on

or

off.

When

the

Manual

function

is

on,

its

but-

ton

indicator

lights

up.

*

The

steps

for

setting

filters

used

by

the

Manual

function

are

described

in

"Quick

Edit"

(p.

17).

Mute

Switch

on

Mute

when

you

want

to

lower

the

output

level.

The

mute

level

can

be

adjusted

to

match

the

desired

usage.

See

"Mute

Function"

(p.

19)

for

an

explanation

of

how

to

make

the

settings.

Each

press

of

the

[MUTE]

button

toggles

the

Mute

function

on

or

off.

When

the

Mute

function

is

on,

its

button

indica-

tor

lights

up.

Switching

the

Display

(FILTER

and

ANA-

LYZE)

The

AFB

mode

not

only

lets

you

display

a

91-band

spec-

trum

analyzer

showing

the

frequency

response

for

input

sound,

it

also

lets

you

switch

to

a

display

of

filter

charac-

teristics.

GRPH

>

SELECT

>

FILTER:

Shows

filter

characteristics

on

the

display.

ANALYZE:

Shows

the

frequency

response

of

input

sound

on

the

display

as

a

91-band

spectrum

equaliz-

er.

Zoom/Scroll

for

the

Display

The

display's

Zoom

and

Scroll

functions

work

the

same

in

every

mode.

See

"Zoom/Scroll

for

the

Display

(Common

for All

Modes)"

(p.

21)

for

a

description

of

the

steps

to

use.

13

About

the

PEQ

Mode

This

mode

lets

you

use

the

AP-700

as

a

stereo

parametric

equalizer

with

18

bands

per

channel,

and

allows

you

to

set

the

frequencies,

Q

values,

and

levels

for

each

band.

The

contents

of

the

settings

can

be

viewed

and

confirmed

in

the

form

of

frequency

response

curves

appearing

on

the

display.

You

can

also

use

the

HPF

and

LPF

independently

of

the

parametric

equalizer.

About

the

Display

on

the

Analyzer/Filter

Screen

The

following

information

appears

on

the

Analyzer/Filter

screen

for

the

PEQ

mode.

Filter

screen

Frequency

(Hz)

Peak

Point

Patch

Name

and

Peak

Point

Analyzer

screen

Display

of

the

center

frequency

for

the

peaking

filter

Low

shelving

High

shelving

FILT

o

“12

Ly

100

200

S00

ik &k

Sk

10k

20k

Basic

Usage

This

section

describes

the

simple

steps

that

are

needed

for

operation

using

the

PEQ

mode.

Practical

applications

such

as

independent

use

for

the

left

and

right

channels

(Link

Off),

as

well

as

the

following

items,

are

described

in

"Section

5:

Editing."

Take

a

look

at

that

section

if

this

is

what

you

need.

HPF

and

LPF

settings

Initialization

EDIT

>

Joae

1,0OKHz

-15.0d06

i

L

#2)»

FEAKING

@=13.4

iz

o

-i2

K

100 200

S00

ik &&

Sk

iDk

20k

1.

Use

the

cursor

buttons

to

move

the

cursor

to

the

band

number,

then

use

the

(VALUE)

buttons

to

select

the

band

you

want

to

modify.

2.

Use

the

cursor

buttons

to

move

the

cursor

to

the

parameter

you

want

to

modify,

then

use

the

(VALUE)

buttons

to

change

the

setting.

You

can

repeat

steps

1

and

2

to

change

the

settings

for

all

the

band

numbers.

[BAND

NUMBER]

(1

to

18)

This

selects

the

band

that

is

to

be

set.

The

parameters

for

the

selected

band

appear

in

the

display.

[FILTER

TYPE]

(PEAKING,

LOW

SHELVING,

or

HIGH

SHELVING)

This

selects

the

type

of

filter.

PEAKING:

Sets

Frequency,

Q,

and

level

as

a

para-

metric

type

equalizer.

LOW

SHELVING:

Sets

frequency

and

level

as

a

low-shelv-

ing

type

equalizer.

HIGH

SHELVING:

Sets

frequency

and

level

as

a

high-shelv-

ing

type

equalizer.

[FREQUENCY]

(19.7

Hz

to

20.2

kHz)

This

sets

the

center

frequency

for

the

filter.

[Q]

(0.3

to

100)

This

sets

the

range

over

which

the

filter

is

applied,

center-

ing

on

the

frequency

set

with

"FREQUENCY."

Larger

values

for

Q

result

in

steeper

filter

characteristics.

*

The

Q

value

is

ignored

when

"LOW

SHELVING"

or

"HIGH

SHELVING"

is

selected

as

the

filter

type.

amen

eremeem

neem

eeenememmeenneaemememneeemnnenmneenmanenennneeenene

area naen

eee

TY

{LEVEL]

(-40.0

to

+12.0

dB)

This

sets

the

filter

level

(amount

of

boost

or

cut).

*

in

the

PEQ

mode,

settings

can

also

be

made

within

a

screen

called

up

(using

the

following

procedure)

from

the

Analyzer/Filter

screen.

MENU

>

PEQ

mode

P

EDIT

>

Switching

the

Display

(FILTER,

91BAND,

and

31BAND)

The

PEQ

mode

not

only

lets

you

display

a

31-

or

91-band

spectrum

analyzer

showing

the

frequency

response

for

input

sound,

it

also

lets

you

display

filter

characteristics.

GRPH

>»

SELECT

>

FILTER:

Shows

filter

characteristics

on

the

display.

91BAND:

Displays

the

frequency

response

of

input

sound

on

the

display

as

a

91-band

spectrum

equalizer.

31BAND:

Displays

the

frequency

response

of

input

sound

on

the

display

as

a

31-band

spectrum

equalizer.

Zoom/Scroll

for

the

Display

The

Zoom

and

Scroll

functions

for

the

display

work

the

same

in

every

mode.

See

"Zoom/Scroll

for

the

Display

(Common

for

All

Modes)"

(p.

21)

for

a

description

of

the

steps

to

use.

1§

About

the

GEQ

Mode

This

mode

enables

use

as

a

91-band

mono

or

31-band

stereo

graphic

equalizer.

You

can

make

the

settings

for

the

equalizer

as

you

view

them

on

the

display.

You

can

also

use

the

HPF

and

LPF

independently

of

the

graphic

equaliz-

er.

About

the

Display

on

the

Filter

Screen

The

following

information

appears

on

the

Filter

screen

for

the

GEQ

mode.

GER

$1

BAND

GEG

DEMO

*

12

mM

foo

200

s00

ik

2

Sk

10k20x

Frequency

(Hz)

Displays

the

Master

Level

Displays

the

Patch

name

Basic

Usage

This

section

describes

the

simple

steps

that

are

needed

for

operation

using

the

GEQ

mode.

Practical

applications

such

as

independent

use

for

the

left

and

right

channels

(Link

Off),

as

well

as

the

following

items,

are

described

in

"Section

5:

Editing."

Take

a

look

at

that

section

if

this

is

what

you

need.

HPF

and

LPF

settings

Initialization

¢

Master

Level

Setting

This

sets

the

amount

of

boost

or

cut

for

the

overall

output

level

(master

level)

of

the

equalizer.

EDIT

»

MSTR

>

Use

the

(VALUE)

buttons

to

set

the

master

level.

«Level

Settings

for

Each

Band

(Frequency)

This

adjusts

the

level

(amount

of

boost

or

cut)

for

each

of

the

bands.

EDIT

>

BAND

>

1

2

#91120.

2KHz

b[-12.

BB

ry

12

o

12

M

40D

205

S00

ik

&

Sk

i0k#Dk

1.

Use

the

cursor

buttons

to

move

the

cursor

to

the

band

(frequency),

then

use

the

(VALUE)

buttons

to

select

the

band.

2.

Use

the

cursor

buttons

to

move

the

cursor

to

the

level,

and

adjust

the

level.

with

the

(VALUE)

but-

tons.

You

can

repeat

steps

1

and

2

to

set

the

level

for

all

bands.

[LEVEL]

(-12.0

to

+12.0

dB)

This

sets

the

level

(amount

of

boost

or

cut).

Setting

the

Level

Curve

Automatically

The

AP-700

comes

with

a

function

that

lets

you

select

a

starting

band,

ending

band,

and

level,

then

automatically

sets

a

smooth

level

for

the

range

between

the

starting

and

ending

bands.

EDIT

>»

FORM

>

1.

Choose

the

starting

(upper)

and

ending

(lower)

bands

(frequencies).

The

current

levels

will

be

shown.

2.

Set

the

level

for

the

starting

(upper)

and

ending

(lower)

points.

3.

Move

the

cursor

to

where

the

type

(one

of

three

below)

is

displayed

and

change

it,

if

necessary,

using

(VALUE).

LINE:

Linearly

connects

the

starting

and

ending

points.

CURVE:

Connects

the

starting

and

ending

points

with

a

smooth

curve.

The

curve

will

change

depending

on

the

settings.

UNDO:

Returns

the

AP-700

to

the

state

before

making

automatic

settings.

4.

Press

(ENTER)

to

set

the

equalizer

to

work

auto-

matically.

To

cancel

what

has

been

automatically

set

up,

perform

an

"UNDO."

This

will

put

the

unit

back

into

the

status

it

was

in

before

it

was

set

to

work

automatically.

*

In

the

GEQ

mode,

settings

can

also

be

made

at

the

screen

called

up

by

using

the

following

procedure.

MENU

>

GEQ

mode

P

EDIT

>

Zoom/Scroll

for

the

Display

The

Zoom

and

Scroll

functions

for

the

display

work

the

same

in

every

mode.

See

"Zoom/Scroll

for

the

Display

(Common

for

All

Modes)"

(p.

21)

for

a

description

of

the

steps

to

use.

This

section

describes

the

parameters

that

can

be

changed

(edited)

in

the

different

modes,

and

explains

how

to

make

these

changes

--

in

other

words,

how

to

edit.

Editing

in

the

AFB

Mode

Quick

Edit

When

you

use

the

AP-700

in

the

AFB

mode,

filters

are

set

manually.

You

can

also

use

the

same

procedures

to

modify

filters

set

by

the

Auto

function.

*

Filters

produced

by

the

Dynamic

function

cannot

be

modi-

fied.

EDIT

>

1.

Move

the

cursor

to

the

filter

number

and

use

the

(VALUE)

buttons

to

select

the

filter

number

you

wish

to

modify.

1

2

Tas

1.

OOKH

[A-i)

peak

tne

FILT

Q

“12

“24

400

200

Sk

iDk

aDk

S00

ik

2.

Use

the

cursor

buttons

to

move

the

cursor

to

the

parameter

you

want

to

work

with,

and

make

the

settings

with

the

(VALUE)

buttons.

If

you

modify

the

parameters

for

a

filter

that

was

set

by

the

Auto

function,

the

filter

number

is

highlighted

(inversed),

indicating

that

the

setting

has

been

modified.

Also,

when

feedback

occurs

at

the

same

frequency

as

a

modified

filter,

the

feedback

is

eliminated

by

a

different

filter

set

to

the

same

frequency.

You

can

repeat

steps

1

and

2

fo

set

the

para-

meters

for

all

filters.

*

Settings

for

the

filters

can

also

be

made

in

the

screen

called

up

by

using

the

following

procedure.

MENU

>

AFB

mode

P

EDIT

P

[FILTER

NUMBER]

(A1

to

Ai8

and

M1

to

M18)

This

selects

the

filter

to

be

set.

The

parameters

for

the

cho-

sen

filter

appear

on

the

display.

A:

Displays

a

filter

set

by

the

Auto

function.

M:

Displays

a

filter

toggled

on

or

off

by

the

Manual

func-

tion.

*

A

filter

set

by

the

Auto

function

can

be

made

into

a

Manual

function

filter,

and

a

filter

reserved

for

the

Manual

function

can

also

be

made

into

a

filter

reserved

for

the

Auto

func-

tion.

This

change

is

made

by

selecting

the

filter

number

to

be

changed

and

pressing

[ENTER].

When

you

do

this,

a

message

asking

you

to

confirm

the

change

appears

on

the

display.

Press

[ENTER]

to

change

the

Auto

or

Manual

func-

tion.

If

you

want

to

start

over,

move

the

cursor

to

[CAN-

CEL]

and

press

[ENTER].

If

you

choose

not

to

make

the

above

change,

only

the

para-

meters

will

be

changed.

(If

a

change

has

been

made

in

the

reservations,

the

filters

numbers

will

be

rearranged.)

[FILTER

TYPE]

(PEAKING,

LOW

SHELVING,

or

HIGH

SHELVING)

This

selects

the

type

of

filter.

PEAKING:

Sets

Frequency,

Q,

and

level

as

a

para-

metric

type

equalizer.

LOW

SHELVING:

Sets

frequency

and

level

as

a

low-shelv-

ing

type

equalizer.

HIGH

SHELVING:

Sets

frequency

and

level

as

a

high-shelv-

ing

type

equalizer.

*

The

type

of

a

filter

reserved

for

the

Auto

function

is

fixed

at

"PEAKING"

and

cannot

be

changed.

[FREQUENCY]

(19.7

Hz

to

20.2

kHz)

For

a

parametric

type

filter,

this

sets

the

center

frequency.

With

a

shelving

type

filter,

this

sets

the

frequency

at

which

the

filter

begins

to

be

applied.

[Q]

(0.3

to

100)

This

sets

the

range

over

which

the

filter

is

applied,

center-

ing

on

the

frequency

set

with

"FREQUENCY."

Larger

values

for

Q

result

in

steeper

filter

characteristics.

*

The

Q

value

for

a

filter

set

by

the

Auto

function

is

set

auto-

matically

according

to

the

level.

However,

this

parameter

can

be

used

to

change

the

value

set

for

Q.

*

The

Q

value

is

not

displayed

when

"LOW

SHELVING"

or

"HIGH

SHELVING’

is

selected

for

Filter

Type.

[LEVEL]

(AUTO:

-40.0

to

0.0

dB;

MANUAL:

—40.0

to

+12.0

dB)

This

sets

the

filter

level

(amount

of

boost

or

cut).

*

Setting

the

level

to

"0

dB"

clears

the

filter.

7

HPF

and

LPF

Settings

The

same

procedure

is

used

in

each

mode

to

make

the

set-

tings

for

the

HPF

and

LPF.

See

"HPF

and

LPF

Settings

(Common

for

All

Modes)"

(p.

20)

for

a

description

of

this

procedure.

Initializing

the

AFB

Mode

This

initializes

the

AFB

mode.

There

are

parameters

that

initialize

the

entire

AFB

mode,

as

well

as

parameters

that

initialize

individual

functions.

[FILTER

RESERVE:

Number

of

Reserved

Filters]

(AUTO:

0

to

18,

DYNAMIC:

0

to

18)

MENU

>

AFB

mode

>

RESERVE

>

The

number

of

filters

that

can

be

used

simultaneously

is

a

total

of

18

bands

for

each

channel.

This

parameter

sets

how

the

18

bands

are

allocated

to

the

three

functions

(A

—

Auto,

D

~

Dynamic,

and

M

—

Manual).

The

number

of

filter

bands

that

can

be

set

with

each

function

is

within

the

value

set

here.

[LINK]

(ON

or

OFF)

MENU

>

AFB

mode

>

LINK

>

This

makes

the

setting

for

linking

the

channels.

ON:

—

The

two

channels

operate

in

the

same

way.

OFF:

The

channels

operate

independently.

Because

all

set-

tings

are

independent,

separate

settings

are

made

for

each

channel.

«When

Link

Is

Switched

from

OFF

to

ON

This

sets

which

channel

—

left

or

right

—

will

serve

as

the

basis

for

the

settings

that

are

applied

commonly

to

both

channels

when

Link

is

set

to

ON.

L

CH:

The

settings

for

the

left

channel

become

the

com-

mon

settings

for

both

channels.

RCH:

The

settings

for

the

right

channel

become

the

com-

mon

settings

for

both

channels.

eWhen

Link

Is

Switched

from

ON

to

OFF

This

sets

which

channel

~

left

or

right

—

is

affected

by

panel

operations

for

the

Auto

or

Dynamic

functions.

L

CH:

Settings

affect

only

the

left

channel.

RCH:

L+RCH:

Settings

affect

both

the

left

and

right

channels.

Settings

affect

only

the

right

channel.

*

Settings

made

here

can

be

switched

from

the

Analyzer/Filter

screen.

18

¢

Operation

When

Link

Is

Set

to

OFF

Because

the

channels

act

independently

when

Link

is

set

to

OFF,

the

following

settings

are

possible.

Selecting

the

Channel

to

Edit

This

selects

the

channel

affected

by

panel

operations.

The

current

setting

is

shown

on

the

Analyzer/Filter

screen.

L

CH:

Panel

operations

affect

only

the

left

channel.

RCH:

Panel

operations

affect

only

the

right

channel.

L+R

CH:

Panel

operations

affect

both

the

left

and

right

chan-

nels.

To

change

the

channel

setting,

move

the

cursor

to

the

channel

display

("L

CH,"

"R

CH,"

or

"L+R

CH"),

and

press

[ENTER].

This

switches

you

to

the

setting

screen.

Filter

Operation

During

a

Quick

Edit

Session

The

channel

("L"

or

"R")

appears

to

the

left

of

the

filter

num-

ber.

Auto

Function

This

perform

initialization

when

using

the

Auto

function.

[STEP]

(0.5

to

40.0

dB)

MENU

>

AFB

mode

>

AUTO/DYNA

>

This

adjusts

the

amount

of

change

in

the

level

that

takes

place

at

one

time

for

the

filter

suppressing

feedback

(howl-

ing).

If

the

amount

of

change

is

small,

some

time

is

required

to

suppress

feedback,

but

changes

in

sound

quali-

ty

can

be

reduced.

A

large

amount

of

change

allows

feed-

back

to

be

suppressed

quickly,

but

sound

quality

may

change

considerably.

[RESPONSE]

(SLOW1

to

FAST10)

MENU

>

AFB

mode

»

AUTO/DYNA

>

This

adjusts

the

time

until

a

signal

above

the

threshold

is

recognized

as

feedback

(howling).

Settings

close

to

"Fast"

result

in

signals

above

the

threshold

being

recognized

as

feedback

in

a

more

immediate

manner.

Conversely,

set-

tings

close

to

"SLOW"

result

in

a

slower

response.

If

you

should

obtain

undesirable

results,

such

as

when

there

is

frequent

noise

at

the

mike,

it

can

be

set

to

"SLOW."

[THRESHOLD]

(-60.0

to

+20.0

dB)

MENU

>

AFB

mode

>»

AUTO/DYNA

>

This

adjusts

the

level

at

which

the

Auto

function

recog-

nizes

the

input

signal

as

feedback

(howling).

If

the

input

level

rises

above

the

threshold,

the

input

signal

is

considered

to

be

feedback

and

the

frequency

response

is

corrected.

[MARGIN]

(0.0

to

+12.0

dB)

MENU

>

AFB

mode

»

AUTO/DYNA

>

When

the

Auto

function

is

searching

for

a

feedback

point

(in

other

words,

during

operation

of

the

Auto

function),

the

output

level

can

increase

by

only

the

level

set

here.

When

the

Auto

function

is

exited,

the

level

returns

to

its

original

value,

providing

a

margin

against

feedback.

Dynamic

Function

Like

the

Auto

function,

the

Dynamic

function

is

also

pro-

vided

with

independent

parameters.

To

guard

against

sud-

den

feedback,

however,

its

settings

are

normally

different

from

the

Auto

function.

The

step

is

larger,

the

response

is

set

closer

to

"FAST,"

and

the

threshold

is

set

higher

to

pre-

vent

operation

from

being

triggered

by

an

input

signal

(an

ordinary

signal

other

than

feedback).

[STEP]

(0.5

to

40.0

dB)

MENU

>

AFB

mode

>

AUTO/DYNA

>

[RESPONSE]

(SLOW1

to

FAST

10)

MENU

>

AFB

mode

>

AUTO/DYNA

>

[THRESHOLD]

(—60.0

to

+20.0

dB)

MENU

>

AFB

mode

>»

AUTO/DYNA

>

Diffuse

Function

This

makes

the

settings

for

the

Diffuse

function.

Because

the

frequency

at

which

feedback

occurs

is

normally

deter-

mined

by

the

distance

between

the

mike

and

the

sound

reinforcement

device,

feedback

can

be

eliminated

by

mov-

ing

the

microphone.

The

Diffuse

function

creates

this

effect

electrically.

[CYCLE]

(0.1

to

20.0

sec)

MENU

>

AFB

mode

>

DIFFUSE

>

This

adjusts

the

cycle.

[DISTANCE]

(0.01

to

14.0

m)

MENU

>

AFB

mode

>

DIFFUSE

>

This

adjusts

the

distance.

Mute

Function

[MUTE

LEVEL]

(—

~

to

0.0

dB)

MENU

>

AFB

mode

>

MUTE

>

This

sets

the

amount

by

which

output

will

be

attenuated

when

the

Mute

function

is

on.

Editing

in

the

PEQ

Mode

HPF

and

LPF

Settings

The

same

procedure

is

used

in

each

mode

to

make

the

set-

tings

for

the

HPF

and

LPF.

See

"HPF

and

LPF

Settings

(Common

for

All

Modes)"

(p.

20)

for

a

description

of

this

procedure.

Initializing

the

PEQ

Mode

This

initializes

the

PEQ

mode.

[LINK]

(ON

or

OFF)

MENU

>

PEQ

mode

>

LINK

>

This

makes

the

setting

for

linking

the

channels,

ON:

The

two

channels

operate

in

the

same

way.

OFF:

The

channels

operate

independently.

Because

all

set-

tings

are

independent,

separate

settings

are

made

for

each

channel.

e

When

Link

Is

Switched

from

OFF

to

ON

This

sets

which

channel

--

left

or

right

--

will

serve

as

the

basis

for

the

settings

that

are

applied

commonly

to

both

channels

when

Link

is

set

to

ON.

L

CH:

The

settings

for

the

left

channel

become

the

com-

mon

settings

for

both

channels.

RCH:

The

settings

for

the

right

channel

become

the

com-

mon

settings

for

both

channels.

e

Operation

When

Link

Is

Set

to

OFF

Because

the

channels

act

independently

when

Link

is

set

to

OFF,

the

following

settings

are

possible.

Selecting

the

Displayed/Manipulated

Channel

This

selects

the

channel

whose

settings

are

shown

and

can

be

manipulated

in

the

Analyzer/Filter

screen.

L

CH:

Settings

for

the

left

channel

are

displayed/become

manipulable.

RCH:

Settings

for

the

right

channel

are

displayed/become

manipulable.

To

change

the

channel

setting,

move

the

cursor

to

the

channel

and

press

[ENTER].

This

switches

you

to

the

set-

ting

screen

for

the

channel.

Filter

Operation

During

a

Quick

Edit

Session

The

channel

("L"

or

"R")

appears

to

the

left

of

the

filter

num-

ber.

[RESOLUTION]

(91BAND

or

31BAND)

MENU

>

PEQ

mode

>

ANALYZER

>

This

chooses

the

number

of

bands

for

the

spectrum

analyz-

er.

91BAND:

31BAND:

Functions

as

a

91-band

spectrum

analyzer.

Functions

as

a

31-band

spectrum

analyzer.

Editing

in

the

GEQ

Mode

HPF

and

LPF

Settings

The

same

procedure

is

used

in

each

mode

to

make

the

set-

tings

for

the

HPF

and

LPF.

See

"HPF

and

LPF

Settings

(Common

for

All

Modes)"

for

a

description

of

this

proce-

dure.

Initializing

the

GEQ

Mode

This

initializes

the

GEQ

mode.

[TYPE]

(91BAND

or

31BAND)

MENU

>

GEQ

mode

P

TYPE

>

This

sets

the

type

of

graphic

equalizer.

91BAND

This

makes

the

AP-700

function

as

a

91-band

monaural

graphic

equalizer.

When

this

type

is

selected,

you

can

select

Bypass

or

Mute

for

the

channel

that

uses

the

equaliz-

er

and

the

channel

that

doesn't.

31BAND

This

makes

the

AP-700

function

as

a

31-band

stereo

graph-

ic

equalizer.

When

this

type

is

selected,

you

can

set

Link

to

ON

or

OFF.

ON:

The

two

channels

operate

in

the

same

way.

OFF:

The

channels

operate

independently.

Because

all

set-

tings

are

independent,

separate

settings

are

made

for

each

channel.

e

When

Link

Is

Switched

from

OFF

to

ON

This

selects

which

channel

—

left

or

right

—

will

serve

as

the

basis

for

the

settings

that

are

applied

commonly

to

both

channels

when

Link

is

set

to

ON.

LCH:

The

settings

for

the

left

channel

become

the

com-

mon

settings

for

both

channels.

RCH:

The

settings

for

the

right

channel

become

the

com-

mon

settings

for

both

channels.

e

Operation

When

Link

Is

Set

to

OFF

Because

the

channels

act

independently

when

Link

is

set

to

OFF,

the

following

settings

are

possible.

Selecting

the

Displayed/Manipulated

Channel

This

selects

the

channel

whose

settings

are

shown

and

can

be

manipulated

in

the

Analyzer/Filter

screen.

L

CH:

Settings

for

the

left

channel

are

displayed/become

manipulable.

RCH:

Settings

for

the

right

channel

are

displayed/become

manipulable.

To

change

the

channel

setting,

move

the

cursor

to

the

channel

and

press

[ENTER].

This

switches

you

to

the

set-

ting

screen

for

the

channel.

Filter

Operation

During

a

Quick

Edit

Session

The

channel

("L"

or

"R")

appears

to

the

left

of

the

filter

num-

ber.

Common

Operations

for

All

Modes

HPF

and

LPF

Settings

(Common

for

All

Modes)

This

sets

the

parameters

for

the

high-pass

filter

(HPF)

and

low-pass

filter

(LPF).

The

high-pass

filter

cuts

frequency

components

lower

than

the

setting,

and

the

low-pass

filter

cuts

frequency

components

higher

than

the

setting.

MENU

>

AFB

mode(PEQ

mode)(GEQ

mode)

>

HPF/LPF

>

<LPF>

[FREQUENCY]

(500.0

Hz

to

20.0

kHz)

This

sets

the

cutoff

frequency

(the

frequency

at

which

the

effect

starts)

for

the

low-pass

filter.

[TYPE]

(OFF,

-6

dB/oct,

or

-12

dB/oct)

This

sets

the

type

of

low-pass

filter.

OFF:

No

LPF

is

used.

—6

dB/oct:

-12

dB/oct:

This

type

cuts

—-12

dB

per

octave.

This

type

cuts

-6

dB

per

octave.

<HPF>

[FREQUENCY]

(20.0

Hz

to

2.0

kHz)

This

sets

the

cutoff

frequency

(the

frequency

at

which

the

effect

starts)

for

the

high-pass

filter.

20

Roland AP-700 User manual

Popular Stereo Equalizer manuals by other brands