Panasonic Ramsa WS-A240 - Service Personnel Guidelines; Selecting Signal Processing Modes

Panasonic Ramsa WS-A240

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INFORMATION

FOR

QUALIFIED

SERVICE

PERSONNEL

CAUTIONS:

These

Servicing

instructions

are

for

use

by

qualified

personnet

only.

To

avoid

electric

shock

do

not

perform

any

servicing

other

than

that

contained

in

the

Operating

Instructions

unless

you

are

qualified

to

do

so.

Refer

all

servicing

to

qualified

service

personnel.

SELECTING

THE

OPTIMUM

SIGNAL

PROCESSING

The

WS-SP2A

Subwoofer

Processor

is

shipped

from

the

factory

with

the

internal

signal

processing

switches

set

in

position

1

for

VLF

I,

output

A

and

B

and

position

A

for

VLF

Ii

switches.

This

provides

optimum

bandpass

process-

ing

for

the

RAMSA

model

WS-A200

loudspeakers

when

used

with

WS-A240

subwoofers.

Other

main

loudspeak-

er

systems

may

require

different

switch

settings.

Although

the

signal

processing

in

the

WS-SP2A

has

been

optimized

for

various

RAMSA

loudspeaker

systems,

the

WS-A240

and

WS-SP2A

may

be

successfully

used

with

other

brands

of

main

loudspeakers

by

observing

these

instructions.

The

following

procedure

will

enable

the

selection

of

optimum

signal

processing

when

other

than

RAMSA

WS-A200

main

loudspeaker

systems

are

to

be

used.

If

the

WS-SP2A

is

installed

in

a

system,

switch

off

all

pow-

er

amplifiers

and

disconnect

the

input

and

output

signal

(Rear)

339094

CAUTIONS:

Before

proceeding

with

disassembly,

be

sure

to

turn

off

the

power

and

unplug

the

power

supply

cord

from

the

AC

outlet.

connectors.

If

the

WS-SP2A

is

mounted

in

a

rack,

remove

the

instrument

and

place

it

on

a

convenient

work

surface.

Be

certain

that

the

AC

power

cord

is

disconnected

from

the

AC

power

supply

outlet.

Remove

the

top

cover.

The

drawing

below

shows

the

loca-

tion

of

the

three

switches

that

select

the

internal

signal

processing

options.

The

switches

affect

only

the

VLF

and

channel

A

and

B

outputs-the

A

+

B

output

is

not

affected

by

the

signal

processing.

Select

the

switch

settings

for

the

signal

processing

that

is

appropriate

for

the

installation

from

the

table

on

next

page.

When

the

WS-SP2A

is

used

in

a

VLF

(subwoofer)

only

mode,

switch

position

1

for

VLF

I,

output

A

and

B

is

recommended.

(Front)

1204

-11—

Table of Contents

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