Arcam 290 Manuel utilisateur

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ARCAM

PELT

A

290

AMPLIFIER/

DELTA

290P

&

XETA

290P

POWER

AMPLIFIER

HANDBOOK

Delta

290P

Power

Amplifier

INTRODUCTION

This

manual

is

in

4

parts:

1.

This

section

has

information

relevant

to

both

the

Delta

290

and

Delta

290P.

This

includes

Warnings

and

Cautions

on

use

and

details

of

how

to

bi-wire

your

loudspeakers.

2.

D290

integrated

amplifier

operating

instructions.

3.

D290P

power

amplifier

operating

instructions.

(The

Xeta

290P

power

amplifier

has

different

front

panel

graphics

but

is

functionally

identical).

4.

Using

the

D290&D290P

together

to

bi¬

amp

your

loudspeakers.

N.B.

Circled

numbers

eg

©

refer

to

items

on

the

diagrams

inside

the

flap

of

the

front

cover.

INSTALLATION

®

Check

that

your

mains

supply

voltage

agrees

with

the

voltage

setting

indicated

on

the

rear

panel

of

the

unit.

■

If

your

mains

supply

voltage

is

different,

consult

your

Arcam

dealer.

MAINS

SAFETY

■

This

product

is

normally

supplied

with

a

moulded

mains

plug

already

fitted

to

the

lead.

If

for

any

reason

the

plug

needs

to

be

removed,

it

must

be

disposed

of

immediately

and

securely,

as

it

is

a

potential

shock

hazard

when

inserted

into

a

mains

socket.

■

If

the

plug

is

removed

then

the

remaining

lead

must

be

rewired

as

follows:

■

The

blue

wire

must

be

connected

to

the

terminal

which

is

coloured

blue

or

marked

with

the

letter

N.

■

The

brown

wire

must

be

connected

to

the

terminal

which

is

coloured

brown

or

marked

with

the

letter

L.

■

The

green

and

yellow

wire

must

be

connected

to

the

terminal

which

is

coloured

green

and

yellow,

or

marked

with

the

letter

E

or

the

safety

earth

symbol.

■

When

replacing

the

fuse

in

the

supplied

moulded

mains

plug,

the

integral

fuse

holder/cover

must

always

be

refitted.

■

Warning:

This

apparatus

must

be

SAFETY

STANDARD

■

This

product

has

been

designed

to

meet

the

IEC

65

international

electrical

safety

standard.

MAINS

SUPPLY

CONNECTIONS

<2>

Insert

the

IEC

line

socket

of

the

mains

lead

fully

into

the

power

inlet

on

the

rear

panel.

Connect

the

other

end

to

your

mains

supply.

CAUTION:

Your

Delta

290

and

D290P

generate

heat

when

in

use,

particularly

at

higher

volumes.

It

is

therefore

most

important

never

to

obstruct

the

ventilation

slots

on

the

top

and

bottom

of

the

unit

as

this

will

cause

overheating.

If

the

temperature

of

the

internal

heatsinks

rises

above

a

safe

level,

then

a

thermal

cut

out

within

the

amplifier

will

operate.

The

POWER

LED

on

the

front

panel

will

turn

amber

and

the

output

protection

relays

will

temporarily

remove

the

feed

to

the

loudspeakers.

The

system

will

reset

itself

as

the

heatsinks

cool

down.

Please

note

that

under

certain

extreme

conditions

it

is

possible

for

the

Delta

290

or

D290P's

thermal

cut

out

to

operate

when

playing

music

at

very

high

levels.

■

If

you

have

only

one

tape

deck

connect

it

to

the

TAPE

1

sockets.

©

TAPE

1

RECORD

OUT

-

Connect

to

your

tape

deck's

input

(RECORD).

©

TAPE

1

PLAY

IN

-

Connect

to

your

tape

deck's

output

(PLAY).

©

TAPE

2

RECORD

OUT

-

Connect

to

your

tape

deck's

input

(RECORD)

or

to

your

A/V

processor's

Tape

or

Line

©

TAPE

2

PLAY

IN

-

Connect

to

your

tape

deck's

output

(PLAY)

or

to

your

A/V

processor's

Tape

or

Line

outputs.

©

A/V

-

Suitable

for

connecting

an

Audio/Visual

product

such

as

a

VCR,

Laserdisc

player

or

Nicam

tuner.

©

CD

-

For

connecting

your

CD

player

or

DAC.

©

TUNER

-

For

connecting

your

radio

tuner.

©

AUX

-

For

connecting

any

unit

with

a

line

level

output,

eg.

tape

deck,

tuner

etc.

■

PHONO

OPTION

-

Please

note:

The

phono

inputs

are

on

a

separate

plug-in

module

which

your

Arcam

dealer

or

distributor

can

supply

and

fit.

This

module

is

compatible

with

most

high

output

moving

coil

and

moving

magnet

cartridges

(MM)

and

low

output

moving

coil

cartridges

(MC).

MM

or

MC

is

selected

via

an

internal

switch.

Your

cartridge

type

should

be

specified

when

the

module

is

fitted.

©

MM

-

For

connecting

a

turntable

fitted

with

a

high

output

moving

coil

or

a

moving

magnet

(MM)

cartridge.

©

MC

-

For

connecting

a

turntable

fitted

with

a

low

output

moving

coil

(MC)

cartridge.

©

GROUND

TERMINAL

-

For

connecting

your

turntable's

earth

lead

(if

fitted).

OPERATION

OF

THE

DELTA

290

©

NORMAL/

A/V

READY

SWITCH

-

With

the

switch

set

to

NORMAL

the

unit

functions

as

a

standard

amplifier.

For

use

with

A/V

decoders

with

its

own

volume

control,

such

as

the

Arcam

Xeta

2,

set

the

switch

to

'A/V

READY'.

This

bypasses

the

Delta

290's

volume

control

when

'PROCESSOR/TAPE

2'

input

is

selected,

to

provide

a

fixed

gain

amplifier.

The

volume

control

and

MUTE

cannot

be

operated

by

remote

in

this

situation.

©

LISTEN

SELECTOR

-

Selects

the

input

you

wish

to

listen

to.

This

signal

also

goes

to

the

TAPE

2

output

sockets

for

recording

on

a

cassette

deck

or

for

external

processing.

The

selector

can

also

be

operated

by

remote

control.

(See

Remote

Control

Functions).

©

RECORD

SELECTOR

-

Selects

the

input

you

wish

to

record

on

TAPE

1.

This

operates

independendy

of

the

LISTEN

function.

@

VOLUME-

Adjusts

the

volume

level

of

the

loudspeakers

and

headphones.

Note

that

with

the

volume

at

minimum

it

may

be

possible

to

still

hear

music

very

faindy.

This

is

normal.

VOLUME

can

also

be

operated

by

remote

control

(See

Remote

Control

functions).

©

PROCESSOR/TAPE

2-

This

is

a

tape

loop

to

enable

monitoring

of

a

recording

on

a

3

head

cassette

deck.

It

can

also

be

used

to

enable

line

inputs

to

be

sent

to

an

external

surround

decoder

such

as

the

Arcam

Xeta

2

for

processing

before

being

routed

back

to

the

amplifier.

For

playback

of

a

cassette

deck

or

if

using

an

A/V

processor

attached

to

TAPE

2

press

the

button

in.

Note:

PROCESSOR/TAPE

2

is

not

remote

controllable.

©

DIRECT

-

Bypasses

bass,

treble

and

balance

controls.

This

affects

all

inputs,

and

will

generally

give

a

small

improvement

in

sound

quality

and

a

useful

reduction

in

the

level

of

background

hiss.

©

BASS

-

Rotate

clockwise

to

boost

the

bass

response

and

and-clockwise

to

cut

the

bass

response.

For

a

flat

response

leave

in

the

central

'click'

position.

@

TREBLE

-

Rotate

clockwise

to

boost

the

treble

response

and

anti-clockwise

to

cut

the

treble

response.

For

a

flat

response

leave

in

the

central

'click'

position.

©

BALANCE

-

Rotate

clockwise

or

anti¬

clockwise

to

move

the

position

of

the

stereoimage.

This

may

be

necessary

if

it

is

not

possible

to

sit

centrally

between

the

speakers.

In

normal

use

leave

in

the

central

'click'

position.

@

SP1

-

Selects

or

defeats

the

main

pair

of

speakers.

Push

the

button

in

to

select.

®

SP2

-

Selects

or

defeats

the

secondary

pair

of

speakers.

Push

the

button

in

to

select.

©

HEADPHONES

SOCKET

-

Accepts

headphones

rated

between

8

ohms

and

2kohms

fitted

with

a

6.3mm

stereo

jack

plug.

If

your

headphones

are

fitted

with

a

different

plug

contact

your

dealer

for

a

suitable

adaptor.

If

you

wish

to

listen

on

headphones

only,

use

SP1

and

SP2

(if

necessary)

to

mute

the

speakers.

■

The

headphone

socket

is

always

switched

on,

irrespective

of

the

positions

-of

switches

©

and

®.

@

REMOTE

RECEIVER

-

Ensure

the

remote

receiver

is

not

obscured

or

commands

from

the

remote

control

handset

will

not

be

received.

®

POWER

-

Switches

the

unit

on

and

off.

©

POWER

LED

-

The

LED

above

the

POWER

switch

will

initially

glow

amber.

After

a

few

seconds,

it

will

glow

green.

When

the

LED

glows

amber,

the

speakers

are

disconnected

and

an

internal

protection

circuit

is

activated

or

the

unit

has

been

muted

by

use

of

the

remote

control.

If

this

LED

glows

amber

dining

normal

use

it

may

be

due

to

the

amplifier

overheating

or

an

output

overload.

Check

the

amplifier

is

properly

ventilated.

Switch

the

amplifier

off

and

wait

for

2-3

minutes

before

switching

on

again.

If

the

LED

continues

to

glow

amber,

switch

the

unit

off,

remove

all

the

speaker

cables

and

switch

on

again.

If

the

LED

goes

to

green

upon

switch

on

then

check

the

speaker

and

speaker

cables

for

short

circuits

before

reconnecting

them.

If

the

LED

continues

to

glow

amber

with

no

speakers

connected

contact

your

Arcam

dealer.

TAPE

RECORDING

■

Both

sets

of

tape

sockets

(TAPE

1

and

TAPE

2)

are

identical

in

sensitivity

and

suitable

for

use

with

almost

any

type

of

recorder

(cassette,

hi-fi

VCR,

reel

to

reel,

DAT,

etc.).

■

RECORDING

(TAPE

1):

Any

input

signal

available

on

the

Delta

290

may

be

routed

to

the

TAPE

1

output

sockets

by

using

the

RECORD

selector

to

select

the

appropriate

input.

Set

your

tape

recorder

into

its

recording

mode

and

the

selected

input

will

be

recorded.

Selecting

the

same

input

to

listen

to

will

not

affect

the

signal

sent

out

to

the

recorder

and

will

now

enable

you

to

listen

to

the

input

being

recorded.

You

may

listen

to

another

input

whilst

recording

on

TAPE

1

by

use

of

the

LISTEN

selector.

If

your

tape

recorder

is

a

3

head

design,

this

will

allow

A-B

monitoring

of

the

actual

recording

while

it

is

taking

place.

Switching

the

listen

switch

between

the

original

source

and

TAPE

1

during

recording

will

then

allow

you

to

make

a

true

'before

and

after

1

(A-B)

comparison.

■

PLAYBACK

(TAPE

1):

Set

LISTEN

to

TAPE

1

and

set

your

tape

recorder

in

its

playback

mode.

■

RECORDING

AND

PLAYBACK,

TAPE

2:

Proceed

as

above,

except

use

the

TAPE

2

sockets

and

select

the

input

to

be

recorded

by

use

of

the

LISTEN

selector.

Use

the

PROCESSOR/TAPE

2

button

when

monitoring

or

playing

back

the

recording.

Do

not

move

the

listen

selector

whilst

recording

or

you

will

lose

the

signal.

■

TAPE

TO

TAPE

DUBBING:

The

Delta

290

allows

2

way

tape

dubbing

(copying)

from

TAPE

1

to

TAPE

2

or

For

example,

to

copy

from

a

recorder

connected

to

the

TAPE

2

sockets

to

a

recorder

connected

to

TAPE

1,

first

switch

the

RECORD

selector

on

the

Delta

290

to

TAPE

2.

This

routes

the

TAPE

2

signal

to

TAPE

l's

output.

Then

set

the

first

tape

recorder

into

its

'record'

mode

and

the

second

to

'playback'

mode

to

enable

the

transfer

to

take

place.

If

you

wish

to

monitor

the

transfer

while

it

is

taking

place

switch

LISTEN

to

TAPE

1.

To

record

from

TAPE

1

to

TAPE

2

set

listen

to

TAPE

1.

To

monitor

push

the

PROCESSOR/TAPE

2

button

in.

PRE/POWER

CONNECTIONS

®

PWR

AMP

IN-To

use

your

Delta

290

as

a

power

amplifier,

connect

the

output

of

your

pre-amplifier

to

PWR

AMP

IN.

Set

the

internal

selector

switch

to

EXT

INPUT

position.

Under

these

circumstances

it

has

exactly

the

same

specification

and

performance

as

a

Delta

290P

power

amplifier.

Contact

your

dealer

or

Arcam

for

more

details.

®

PREAMP

OUT

-

To

use

your

Delta

290

as

a

pre-amplifier,

connect

PREAMP

OUT

to

your

power

amplifier's

input.

Please

note:

the

PREAMP

OUT

sockets

are

permanently

active.

REMOTE

CONTROL

FUNCTIONS

■

Your

Delta

290

amplifier

is

supplied

with

the

Arcam

CR25

"Handi

Remote"

infra-red

remote

control

handset,

which

has

buttons

to

allow

the

simple

operation

of

other

products.

It

is

supplied

with

2AA

batteries

-

ensure

these

are

inserted

correcdy.

The

remote

allows

you

to

operate

the

Delta

290

plus

some

basic

functions

of

an

Arcamf

or

Philips

based

CD

player,

a

remote

controlled

tuner

(such

as

the

Arcam

Delta

280*),

the

Arcam

Delta

Black

Box

500

DACC

and

an

Arcam

amplifier

with

remote

control

facilityf

the

Alpha

6/

Alpha

6

Plus,

Delta

110/110S

pre

amplifiers

and

the

Xeta

One/

Two

Home

Cinema

amplifiers).

Note:

versions

of

the

Delta

280

FM

tuner

manufactured

before

April

1995

will

not

respond

to

the

programme

up/down

buttons

on

the

"Handi

Remote".

REMOTE

MODE

-

The

Delta

290

is

fitted

with

an

internal

Remote

Mode

selector

switch,

which

is

factory-set

to

NORMAL.

In

NORMAL

mode,

the

Arcam

"Handi-

Remote"

or

Arcam

CR200

System

Remote

will

synchronise

the

operation

of

any

Arcam

CD

player

or

transport,

cassette

deck

or

remote

control

tuner

with

the

LISTEN

selector

on

the

Delta

290,

all

at

the

touch

of

a

single

button.

For

example,

using

the

remote

in

CD

mode,

press

PLAY,

and

the

CD

player

will

start

the

disc

and

the

LISTEN

function

selects

CD.

If

this

facility

is

not

required,

the

internal

selector

switch

should

be

set

to

UNIQUE.

The

LISTEN

selector

switch

can

still

be

operated

by

either

remote

control

handset.

The

MUTE

button

mutes

the

speaker

connections

and

pre-amp

outputs.

Both

tape

outputs

however

remain

active.

In

MUTE

mode

the

power

LED

will

turn

amber

until

mute

is

disabled

by

either

pressing

MUTE

again

or

pressing

volume

-/+.

■

Input

selection

may

also

be

made

via

the

CR25

and

CR200

remote

control

handsets.

Where

fitted,

the

phono

stage

is

selected

with

the

PHONO

button.

All

other

inputs

are

made

active

when

the

relevant

button

is

pressed.

TAPE

2

may

be

chosen

via

the

front

panel

switch

but

not

by

the

remote

control

handset.

Note:

The

SHIFT

button

does

not

initiate

any

functions

within

the

Delta

290/290P.

DELTA

290P

POWER

AMPLIFIER

Please

refer

to

drawing

inside

front

cover.

LOUDSPEAKER

CONNECTIONS

*

The

speaker

terminals

are

colour

coded

red

for

positive

and

black

for

negative.

These

terminals

are

also

labelled

'R'

for

the

right

channel

speakers

and

'L'

for

the

left

channel

speakers.

®,@

Connect

terminals

®

to

your

right

speaker

and

terminals

@

to

your

left

speaker.

■

Connect

the

red

cable

termination

to

the

red

terminals

and

the

other

cable

termination

to

the

black

terminal.

If

your

speaker

cable

has

bare

ends,

the

positive

conductor

can

usually

be

identified

by

a

ridge

or

coloured

marking.

Ensure

that

no

stray

strands

are

allowed

to

touch

another

cable

or

the

amplifier's

casing.

This

can

cause

a

short

circuit

and

damage

your

amplifier!

®,®

To

drive

a

second

pair

of

speakers,

connect

terminals

©

to

the

right

speaker

and

terminals

®

to

the

left

speaker.

f

Except

the

Alpha

One

CD

player,

which

different

remote

control

language.

FRONT

PANEL

The

Delta

290P

can

drive

two

pairs

of

loudspeakers,

simultaneously

if

required,

providing

both

pairs

are

rated

between

8

and

16

ohms.

Either

pair

can

be

selected

using

the

switches

labelled

SP1

and

SP2

on

the

front

panel.

To

avoid

overheating,

the

combined

load

impedance

as

seen

by

the

amplifier

should

not

fall

below

4

ohms

per

channel.

CONNECTING

YOUR

SOURCE

COMPONENT

®

PWR

AMP

IN

-Connect

to

your

pre¬

amplifier

outputs.

®

PREAMP

OUT:

The

290P

can

be

connected

to

provide

two

mono

outputs

from

a

single

input.

Using

the

U-link

®

supplied,

connect

the

PREAMP

OUT

sockets

©

together.

Utilising

one

Delta

290P

per

loudspeaker

in

this

manner

will

allow

bi-amplifying

of

bi-

wireable

loudspeakers.

This

is

particularly

beneficial

for

top

quality

stereo

installations

with

a

separate

pre-amplifier,

or

for

the

left,

centre

and

right

channel

loudspeakers

in

a

five

speaker

Dolby

Pro

Logic

system.

Contact

your

Arcam

dealer

for

more

detailed

information.

»

Daisy

Chain

-

The

Delta

290P

is

capable

of

driving

further

Delta

290P

amplifiers

(or

any

other

power

amplifier),

to

drive

more

speakers

(eg.

those

in

other

rooms

or

tri-

amplified

speakers

etc).

Connect

the

extra

power

amplifier

inputs

to

the

PREAMP

OUT

outputs

®

left

to

left,

right

to

right.

t,®

SP1

and

SP2

-

Pressing

the

SP1

switch

turns

on

the

speakers

connected

to

the

SP1

(upper)

set

of

output

terminals

on

the

rear

panel.

Similarly

the

SP2

switch

turns

on

the

speakers

connected

to

the

SP2

(lower)

set

of

output

terminals.

■

Both

the

SP1

and

SP2

switches

can

be

turned

on

at

the

same

time,

provided

that

the

combined

impedance

of

the

two

pairs

of

speakers

does

not

fall

below

4

ohms

per

channel.

Important

note:

If

both

switches

are

turned

off

then

the

amplifier

will

appear

not

to

be

functioning,

as

all

speakers

will

be

switched

off!

©

HEADPHONES

SOCKET

-

Accepts

headphones

rated

between

8ohms

and

2kohms

fitted

with

a

6.3mm

stereo

jack

plug.

If

your

headphones

are

fitted

with

a

different

plug

contact

your

dealer

for

a

suitable

adaptor.

■

The

headphone

socket

is

always

switched

on,

irrespective

of

the

positions

of

switches

©

and

©.

©

POWER

-

Switches

the

power

on

and

off.

©

POWER

LED

-

This

will

initially

glow

amber.

After

a

few

seconds,

it

will

glow

green.

When

the

LED

glows

amber,

the

speakers

are

disconnected

and

an

internal

protection

circuit

is

activated.

■

If

this

LED

glows

amber

during

normal

use

it

may

be

due

to

the

amplifier

overheating

or

an

output

overload.

Check

the

amplifier

is

properly

ventilated.

Switch

the

amplifier

off

and

wait

for

2-3

minutes

before

switching

on

again.

If

the

LED

continues

to

glow

amber,

switch

the

unit

off,

remove

all

the

speaker

cables

and

switch

on

again.

If

the

LED

goes

to

green

on

switch

on

then

check

the

speaker

and

speaker

cables

for

short

circuits

before

reconnecting

them.

If

the

LED

continues

to

glow

amber

with

no

speakers

connected

contact

your

Arcam

dealer.

ADDING

A

DELTA

290P

TO

AN

EXISTING

DELTA

290

If

you

are

using

a

Delta

290,

a

Delta

290P

can

be

added

to

bi-amplify

a

pair

of

bi-wireable

loudspeakers.

This

will

reap

substantial

improvements

in

sound

quality

if

the

following

precautions

are

observed.

■

Always

switch

on

the

Delta

290

and

allow

it

to

stabilise

(indicator

light

turns

green)

before

switching

on

the

Delta

290P.

■

The

Delta

290

and

Delta

290P

power

amplifier

are

placed

on

separate

shelves.

Stacking

the

units

on

top

of

each

other

will

reduce

the

sound

quality

slightly.

It

will

also

reduce

ventilation

and

consequently

the

power

handling

capability.

■

The

existing

Delta

290

should

be

used

to

drive

the

loudspeakers'

HF

(high

frequency)

units.

The

new

Delta

290P

is

utilised

for

the

LF

(bass)

drivers,

as

shown

in

the

wiring

diagram

below.

■

At

the

end

of

a

listening

session

the

Delta

290P

should

always

be

turned

off

first.

■

High

quality

interconnect

cables

should

be

used

between

the

Delta

290

and

Delta

290P.

■

The

use

of

high

quality

interconnect

and

speaker

cables

in

your

system

is

essential

to

obtain

good

sound

quality.

Cables

from

the

AudioQuest

range

are

ideal

partners

for

Arcam

products.

Contact

your

dealer

for

further

details.

■

WARNING

-

Ensure

that

the

links

connecting

the

red

terminals

and

the

black

terminals

on

the

speakers

are

removed

before

switching

on

the

amplifiers.

Failure

to

do

this

could

cause

damage

to

one

or

both

amplifiers

and

this

is

not

covered

under

the

warranty.

TECHNICAL

SPECIFICATION

Delta

290P

Power

Amplifier

Output

power

(20Hz-20kHz

at

0.5%THD)

70W,

both

channels,

8Q

"-140W,

single

channel,

4Q,

1kHz

Harmonic

Distortion,

60W,

8Q

at

1kHz

0.02%

typical

Peak

current

rating

±18

amps

Input

impedance

7.5kQ

Input

sensitivity

670mV

for

75W/

8fi

Gain

(1kHz)

31.3dB±0.2dB

Frequency

response

10Hz-20kHz

±

0.5dB

Noise

(CCIR)

ref.

rated

power

-lOOdB

Mains

voltage

230V/115V

±12%

Power

consumption

(max)

550VA

Size

W/D/H

mm.

430x300x92

Weight

nett

6.0kg

packed

7.0kg

Supplied

accessories

Mains

lead

E

&

O

E

PROBLEMS?

If

your

dealer

is

unable

to

answer

any

query

regarding

this

or

any

other

Arcam

product

please

contact

Arcam

Customer

Services

on

+44

(0)1223

440964

or

write

to

us

at

the

address

on

the

back

cover

of

this

handbook.