Adcom GTP-600 User manual

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1

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/©COM

details

you

can

hear

GTP-600

Surround

Sound

Tuner/Preamplifier

OWNER

S

MANUAL

THE

FOLLOWING

PRECAUTIONS

AND

SAFETY

INSTRUCTIONS

ARE

REQUIREMENTS

OF

UL

AND

CSA

SAFETY

REGULATIONS

Warning:

To

reduce

the

risk

of

fire

or

electric

shock,

do

not

expose

this

unit

to

rain

or

moisture.

E3

CAUTION

m

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

—-

AVIS:

RISQUE

DE

CHOC

ELECTRIQUE-NE

PAS

OUVRIR.

A

The

graphic

symbol

of

a

lightning

flash

with

an

arrow

point

within

a

triangle

signifies

that

there

is

dangerous

voltage

within

the

unit

and

it

poses

a

hazard

to

anyone

removing

the

cover

to

gain

access

to

the

interior

of

the

unit.Only

qualified

service

personnel

should

make

any

such

attempt.

/|\

The

graphic

symbol

of

an

exclamation

point

within

an

/

W

\

equilateral

triangle

warns

a

user

of

the

device

that

it

is

/

f

\

necessary

to

refer

to

the

instruction

manual

and

its

/

•

\

warnings

for

proper

operation

of

the

unit.

Do

not

place

this

unit

on

an

unstable

cart,

stand,

tripod,

bracket,

or

table.

The

unit

may

fall,

causing

serious

injury

to

a

child

or

adult,

and

serious

damage

to

the

unit.

Use

only

with

a

cart,

stand,

tripod,

bracket,

or

table

recommended

by

the

manufacturer,

or

sold

with

the

unit.

Any

mounting

of

the

device

should

follow

the

man¬

ufacturer’s

instructions,

and

should

use

a

mounting

ac¬

cessory

recommended

by

the

manufacturer.

Read

all

the

safety

and

operating

instructions

before

connecting

or

using

this

unit.

Retain

this

notice

and

the

owner’s

manual

for

future

reference.

All

warnings

on

the

unit

and

in

its

operating

instructions

should

be

adhered

to.

All

operating

and

use

instructions

should

be

followed.

Do

not

use

this

unit

near

water;

tor

example,

near

a

bathtub,

washbowl,

kitchen

sink,

laundry

tub,

in

a

wet

basement,

or

near

a

swimming

pool.

The

unit

should

be

installed

so

that

its

location

or

position

does

not

interfere

with

its

proper

ventilation.

For

example,

it

should

not

be

situated

on

a

bed,

sofa,

rug,

or

similar

surface

that

may

block

the

ventilation

openings;

or

placed

in

a

built-in

installation,

such

as

bookcase

or

cabinet,

that

may

impede

the

flow

of

air

through

its

ventilation

openings.

The

unit

should

be

situated

away

from

heat

sources

such

as

radiators,

heat

registers,

stoves,

or

other

devices

(including

amplifiers)

that

produce

heat.

The

unit

should

be

connected

to

a

power-supply

outlet

only

of

the

voltage

and

frequency

marked

on

its

rear

panel.

The

power-supply

cord

should

be

routed

so

that

it

is

not

likely

to

be

walked

on

or

pinched,

especially

near

the

plug,

convenience

receptacles,

or

where

the

cord

exits

from

the

unit.

Clean

unit

only

as

recommended

in

its

instruction

manual.

The

power-supply

cord

of

the

unit

should

be

unplugged

from

the

wall

outlet

when

it

is

to

be

unused

for

a

long

period

of

time.

Care

should

be

taken

so

that

objects

do

not

fall,

and

liquids

are

not

spilled,

into

the

enclosure

through

any

openings.

This

unit

should

be

serviced

by

qualified

service

personnel

when:

A.

T

he

power

cord

or

the

plug

has

been

damaged;

or

B.

O

b

jects

have

fallen,

or

liquid

has

been

spilled,

into

the

unit;

or

C.

T

he

unit

has

been

exposed

to

rain,

or

liquids

of

any

kind;

or

D.

T

he

unit

does

not

appear

to

operate

normally,

or

exhibits

a

marked

change

in

performance;

or

E.

T

he

device

has

been

dropped,

or

the

enclosure

damaged.

DO

NOT

ATTEMPT

SERVICING

OF

THIS

UNIT

YOURSELF.

REFER

SERVICING

TO

QUALIFIED

SERVICE

PERSONNEL.

ATTENTION

POUR

PREVENIR

LES

CHOCS

ELECTRIQUES

NE

PAS

UTILISER

CETTE

FICHE

POLARISEE

AVEC

UN

PROLONGATEUR,

UNE

PRISE

DE

COURANT

OU

UNE

AUTRE

SORTIE

DE

COURANT,

SAUF

SI

LES

LAMES

PEUVENT

ETRE

INSEREES

A

FOND

SANS

EN

LAISSER

AU-

CUNE

PARTIE

A

DECOUVERT.

CAUTION

TO

PREVENT

ELECTRIC

SHOCK

DO

NOT

USE

THIS

POLARIZED

PLUG

WITH

AN

EXTENSION

CORD,

RECEPTACLE

OR

OTHER

OUTLET

UN¬

LESS

THE

BLADES

CAN

BE

FULLY

INSERTED

TO

PREVENT

BLADE

EXPOSURE.

CAUTION

POWER

LINES

Any

outdoor

antenna

must

be

located

away

from

all

power

lines.

OUTDOOR

ANTENNA

GROUNDING

If

an

outside

antenna

is

connected

to

your

tuner

or

tuner-preamplifier,

be

sure

the

antenna

system

is

grounded

so

as

to

provide

some

protection

against

voltage

surges

and

built-up

static

charges.

Section

810

of

the

National

Electrical

Code,

ANSI/NFPA

No.

70-1984,

provides

information

with

respect

to

proper

grounding

of

the

mast

and

supporting

structure,

grounding

of

the

lead-in

wire

to

an

antenna

discharge

unit,

size

of

grounding

conductors,

location

of

antenna

discharge

unit,

connection

to

grounding

electrodes,

and

requirements

for

the

grounding

electrode.

a.

Use

No.10

AWG

(5.3

mm*)

copper,

No.8

AWG

(8.4

mm*)

aluminum,

No.17

AWG

(1.0

mm

2

)

copper-clad

steel

or

bronze

wire,

or

larger,

as

a

ground

wire.

Secure

antenna

lead-in

and

ground

wires

to

house

with

stand-off

insulators

spaced

from

4-6

feet

(1.22-1.83

m)

apart.

c.

Mount

antenna

discharge

unit

as

close

as

possible

to

where

lead-in

enters

house.

d.

Use

jumper

wire

not

smaller

than

No.6

AWG

(13.3

mm

2

)

copper,

or

the

equivalent,

when

a

separate

antenna-grounding

electrode

is

used.

See

NEC

Section

810-21

(j).

EXAMPLE

OF

ANTENNA

GROUNDING

AS

PER

NATIONAL

ELECTRICAL

CODE

INSTRUCTIONS

CONTAINED

IN

ARTICLE

810

-

RADIO

AND

TELEVISION

EQUIPMENT

POWER

LINES

STANDOFF

INSULATORS,

b

POWER

SERVICE

GROUNDING

ELECTRODE

SYSTEM

{e.

g.

interior

metal

water

pipe)

ANTENNA

LEAD-IN

WIRE

TO

EXTERNAL

ANTENNA

TERMINALS

OF

RADIO

RECEIVER

BONDING

JUMPER,

d

GROUND

WIRE,

a.b

GROUND

CLAMPS

OPTIONAL

ANTENNA

GROUNDING

ELECTRODE

DRIVEN

8

FEET

(2.44

M)

INTO

THE

EARTH

IF

REQUIRED

BY

LOCAL

COOES.

SEE

NEC

SECTION

810-21

{1}

NOTE

TO

CATV

SYSTEM

INSTALLER

This

reminder

is

provided

to

call

the

CATV

system

installer's

attention

to

Article

820-22

of

the

National

Electrical

Code

that

provides

guidelines

for

proper

grounding

and,

in

particular,

specifies

that

the

cable

ground

shall

be

connected

to

the

grounding

system

of

the

building,

as

close

to

the

point

of

cable

entry

as

practical.

INTRODUCTION

a

w^sechdce"

3

°°

^

deC

'

S

'

°

n

t0

purchase

the

ADCOM

GTP-600

Surround

Sound

Tuner/Preamplifier.

You’ve

made

the

e

finI

s

P

t’in

temp

f

ir

?.^

ne

I

/pr

f

amplifier

specifical|

y

designed

for

both

audiophiles

and

videophiles

who

want

FM

anH

&M

h

theater

flexibility.

The

tuner

section

uses

superbly

accurate

quartz

synthesizer

technology

for

excellent

reception.

The

preamplifier

section

derives

extensive

sonic

benefits

from

ADCOM’s

exclusive

Class

A

biased

linear

amplifiers

and

precision

Roederstein

1%

metal

film

resistors

in

all

critical

circuiTpaths

The

GTP-

6

°0

combines

advanced

Dolby

Pro

Logic

decoding,

ADCOM’s

proprietary

Cinema

enhancement

circuit

$W

'“

n

9

°'

<Comp

“

t

e>

high

A

NOTE

ON

YOUR

OWNER’S

MANUAL

*

!pft

h

tnth

?

The

°H

/

?

S

W

f

lrSeCti0n

W

'"

S

OOn

have

you

up

and

runnin

9-

However,

we

strongly

recommend

that

you

ZX«zr^zt^

9

EVERYTHING

Y0U

NEED

T0

know

'

°

'

,ine

“

if

you’re

more

patient

or

want

more

background,

start

with

EVERYTHING

YOU

NEED

TO

KNOW

You’ll

be

rewarriPd

with

a

much

better

understanding

of

how

the

GTP-600

works

and

what

its

capabilities

are

This

unit

is

manufactured

under

license

from

Dolby

Laboratories

Licensing

Corporation.

It

is

additionally

licensed

under

one

or

more

of

the

following

patents:

U.S.

number

3,959,950,

Canadian

numbers

1,004,603

and

1,037,877.

“Dolby,”

“Pro

Logic”

and

the

double-D

symbol

are

trademarks

of

Dolby

Laboratories

Licensing

Corporation.

1

FRONT

and

REAR

PANELS

We

carefully

designed

the

GTP-600

with

your

enjoyment

in

mind.

We’ve

arranged

the

controls

in

functional

groups

so

that

their

use

is

almost

intuitive.

The

rear

panel

also

benefits

from

the

same

design

goals.

Take

a

few

moments

to

familiarize

yourself

with

them.

You'll

find

references

to

the

circled

ID

numbers

throughout

the

rest

of

this

manua.

GTP-600

FRONT

PANEL

DIAGRAM

2

GTP-600

REAR

PANEL

DIAGRAM

3

GTP-600

REMOTE

CONTROL

DIAGRAM

©

Learn

indicator

LED

©

Learn/Use

mode

switch

©

Power

On/Off

©

Input

selectors

©

Numeric

keypad

©

Forward/Reverse

scan

(CD)

©

Surround

mode

selector

©

Display

(On

Screen

Display)

On/Off

©

Check

(Balance

Check)

On/Off

©

Delay

selector

©

Rear

level

set

Up/Down

©

Center

level

set

Up/Down

©

Sub(woofer)

level

set

Up/Down

©

Transmit

LED

CD

Reset

button

©

Audio

mute

On/Off

©

CD

player

controls

©

FM/AM

select

&

CD

disc

select

©

FM/AM

tuning

Up/Down

&

CD

track

change

buttons

©

Master

volume

Up/Down

©-

©-

©-

©-

©

©

©

©

©

©

D—I

-

learn

□

mule

c=>

CD

tuner

tape

1

tape

2

c=]

CZI

CZJ

CD

video

1

video

2

video

3

video

41

□

□□□

:

CD

CD

CD

7

B

9

CD

0

CD

CD

+

10

pause

CD

disc

random

CP

hCD

-1

<

tunin

CD

(-

{

—«

»»

_|j

delay

che

ck

display

surround

^

H-1

L_D

CD

CD

1

1

i

CD

CD

1_1

rear

center

sub

CD

CD

CD

LI_I

™

T

□

master

B

/CCOM

-©

©

©

-©

©

©

©

QUICK

START

©

©

©

OUT

OF

THE

BOX---

1)

UNPACKING:

Unpack

the

GTP-600

carefully.

MAKE

SURE

YOU

REMOVE

THE

REMOTE

CONTROL

FROM

THE

BOX.

Put

the

foam

inserts

and

other

packing

materials

back

in

the

carton

and

save

it.

2)

PLACEMENT:

Select

a

stable,

vibration-free

location

for

the

GTP-600

as

close

as

possible

to

your

other

audio

and

video

components.

3)

POWER

OFF!:

Turn

off

all

the

other

components

in

your

system.

This

means

everything.

And

don't

plug

the

GTP-

600

into

the

AC

outlet

yet.

CONNECTIONS

4)

FM

ANTENNA:

Depending

on

the

antenna

you

use,

connect

it

to

either

the

75

Ohm

terminal

©

or

the

300-Ohm

screw

terminals

©

on

the

GTP-600’s

rear

panel.

The

“T"

shaped

FM

antenna

supplied

with

the

GTP-600

is

a

300

ohm

"dipole”

and

should

be

connected

accordingly.

You’ll

find

it

adequate

for

most

installations.

5)

AM

ANTENNA:

Connect

an

AM

antenna

to

the

“Ground"

and

“AM"

screw

terminals

©on

the

GTP-600’s

rear

panel.

The

supplied

AM

loop

antenna

is

sufficient

for

all

but

the

most

difficult

reception

areas.

However,

it

must

be

oriented

for

best

reception.

4

6

)

^

DIO

rf^

URCE

H0

°

K

UP:

Connect

up

to

three

external

hi

9

h

tevel

audio

sources

(CD

players,

cassette

decks

MD

or

DCC

devices,

etc.)

to

the

appropriate

input

jacks

(©

©

and

©)

on

the

rear

panel.

Be

sure

to

observe

proper

channel

continuity

(Left

channel

to

Left

channel,

Right

to

Right.)

..

jacks^oS©

T

a

"

aUd

'

°

reCOrd

'

n

9

dev

'

c

es

should

be

connected

10

ltie

GTP-600

'

s

corresponding

tape

output

7)

VIDEO

SOURCE

HOOK

UP:

Make

all

video

connections

to

and

from

the

GTP-600

(including

TV

monitor)

using

EITHER

the

standard

(composite)

video

jacks

OR

the

high

definition

S-video

connectors.

DO

NOT

INTERMIX

Connect

up

to

four

video

sources

(videodisc

players,

video

cassette

players,

camcorders,

video

cassette

recorders

etc.)

to

the

appropriate

jacks

on

the

rear

panel

Video

1

and

2

inputs

are

for

play-only

devices

(videodisc

players

for

example)

while

Video

3

and

Video

4

have

complete

input

and

output

connections

for

a

play/record

device

such

as

a

VCR.

Standard

(composite)

video

connections

go

to

the

appropriate

yellow

color-keyed

RCA

jacks

(©

©

©

©

©

and

©).

w

8

)

9)

High

definition

S-video

connections

go

to

the

appropriate

multi-pin

connectors

(©

through

©).

Left

and

Right

channel

audio

connections

for

your

video

components

go

to

the

appropriate

white

and

red

color-keyed

RCA

jacks

(©©©©©

and

©).

TV

HOOK

UP:

Connect

your

TV

monitor

or

receiver

to

either

of

the

two

Standard

(composite)

Monitor

outputs

®

°!

th

®

S

'

vldeo

Monitor

output

©

by

using

the

appropriate

cable

from

the

GTP-600

to

the

corresponding

input

on

the

TV.

Use

the

same

format

(standard

or

S-video)

already

chosen

for

other

video

components.

If

you

own

an

older

TV

with

only

an

antenna

input

(either

screw

terminals

or

an

"F”

type

connector)

you

will

need

to

purchase

an

RF

modulator

at

an

electronic

parts

store.

Check

your

TVs

Owner's

Manual

for

additional

information.

VIDEO

MODE

SELECTION:

Set

the

Video

Mode

switch

©to

either

Standard

(composite)

or

S-video,

depending

on

which

format

you

have

chosen

for

video

signal

transfer.

10)

CENTER

CHANNEL

MODE

SELECTION:

Adjust

the

Center

Mode

switch

©

to

the

appropriate

position.

"Normal"

restricts

bass

information

below

100

Hz.

It

is

used

when

a

center

channel

speaker

has

somewhat

limited

bass

capability.

Choose

"Wideband"

when

the

center

channel

speaker/amplifier

combination

is

capable

of

extended

bass

response.

Choose

“Phantom”

only

when

a

center

channel

speaker

is

not

being

used.

!

11)

PREAMP

TO

POWER

AMP

CONNECTIONS:

Connect

the

GTP-600's

5

Main

Preamplifier

Outputs

(©

-

©)

to

the

corresponding

power

amplifier

inputs.

Remember

to

maintain

proper

channel

continuity:

Connect

the

GTP-

600

s

right

front

output

to

the

power

amplifier’s

right

front

input,

etc.

The

multi-pin

ADIink""

connector

©

simplifies

these

connections

when

used

with

ADCOM

5

or

6

channel

power

amplifiers.

.

^

12)

SUBWOOFER

CONNECTIONS:

Connect

a

powered

(self-amplified)

subwoofer

to

the

Subwoofer

output

©

using

anRCA

to

RCA

patchcord

to

the

line-level

(or

amplifier)

input

of

the

subwoofer.

Adjust

the

Low-pass

Filter

switch

©

in

accordance

with

the

instructions

supplied

with

the

subwoofer.

A

non-amplified

subwoofer

used

with

a

separate

power

amplifier

should

be

connected

in

the

same

manner-

Subwoofer

output

©to

amplifier

input.

Connect

the

subwoofer

to

the

amplifier

according

to

the

instructions

supplied

with

those

units.

13)

REMOTE

EXTENSION

ACCESSORIES:

Connect

up

to

two

(optional)

remote

control

repeater

units

(IRA-500)

to

the

Infrared

Repeater

outputs

©

if

needed.

Connect

the

(optional)

remote

control

sensor

(XR-500

II

or

SPM-500

II)

to

the

Remote

Sensor

Extension

©

according

to

the

instructions

supplied

with

these

units.

5

14)

AC

CONVENIENCE

OUTLETS

(Certain

models

only):

A)

Switched

outlets:

Plug

up

to

two

sources

(CD

player,

etc.)

into

the

switched

AC

outlets

©

These

components

will

receive

AC

whenever

the

GTP-600

is

"ON"

(provided,

of

course,

that

the

GTP-600

itself

is

plugged

into

a

live

AC

outlet.)

B)

Unswitched

outlet:

This

outlet

©

supplies

AC

whenever

the

GTP-600

is

plugged

into

a

live

AC

outlet

regardless

of

whether

the

GTP-600

is

“ON"

or

not.

The

unswitched

outlet

is

usually

reserved

for

mechanical

devices

(such

as

a

tape

deck)

that

might

De

damaged

if

power

was

inadvertently

cut

off

before

the

mechanism

disengages.

15)

AC

LINE

FUSE:

This

socket

©

holds

the

AC

line

fuse.

In

the

unlikely

event

that

the

AC

fuse

opens,

replace

it

ONLY

with

a

fuse

of

the

exact

type

and

rating.

A

subsequent

fuse

failure

means

that

your

GTP-600

needs

service.

16)

AC

LINE

CORD:

Plug

the

AC

cord

©

into

an

unswitched

AC

wall

outlet

so

that

power

to

the

GTP-600

can

t

be

accidentally

interrupted

by

turning

off

an

AC

switch.

BASIC

OPERATION

NOTE:

This

section

assumes

that

you've

set

up

the

rest

of

your

system

(sources,

power

amplifiers

and

speakers,

etc.)

in

accordance

with

the

instructions

supplied

with

these

units.

17)

VOLUME

DOWN—POWER

ON!:

Turn

the

GTP-600's

volume

control

©

all

the

way

down

(fully

counterclockwise.)

Turn

the

unit

on

by

pressing

the

power

switch

O

•

Then

turn

the

other

system

components

on:

sources

first,

then

power

amplifiers.

18)

SOURCE

SELECTION

and

RECORDING:

Choose

a

source

by

pressing

the

GTP-600's

appropriate

Audio

or

Video

source

selectors

(©&

©respectively).

Then

operate

the

source

component

according

to

the

supplied

instructions.

NOTE:

Signals

from

the

chosen

source

are

available

at

all

recording

outputs.

This

means,

for

example,

that

you

can

record

a

CD

on

a

Hi

Fi

VCR

without

changing

any

of

the

rear

panel

connections.

Conversely,

you

can

record

the

audio

portion

of

a

video

tape

on

an

audio

cassette

recorder.

19)

THE

TUNER:

The

Tuner

button

selects

the

internal

AM/FM/FM

Stereo

tuner.

Choose

FM

or

AM

by

using

the

FM/

AM

selector

button

©..Tune

in

the

desired

station.

20)

TONE

CONTROLS:

The

Bass

and

Treble

controls

(©&©

respectively)

emphasize

or

decrease

low

and

high

frequencies

to

suit

your

taste.

These

controls

are

active

only

when

the

Tone

in

switch

©

is

depressed.

A

separate

Bass

EQ

switch

©adds

a

predetermined

amount

of

bass

energy

to

all

signals.

You

may

find

this

particularly

convenient

to

enhance

video

soundtracks.

This

circuit

operates

independently

of

the

Tone

in

switch.

21

)

BALANCE

CONTROL:

The

Balance

control

©allows

you

to

compensate

for

source

eccentricities

or

unusual

listening

room

acoustics

by

adjusting

relative

output

from

the

main

system

speakers.

If

you

want

more

output

from

the

right

speaker,

for

example,

turn

the

control

to

the

right.

22)

VOLUME

CONTROL:

The

Volume

control

©

is

the

master

gain

control

for

the

entire

system.

Turn

it

clockwise

to

increase

volume

and

counterclockwise

to

decrease

volume.

NOTE:

The

LED

on

the

front

panel

Volume

control

glows

steadily

when

in

normal

operation.

When

the

Audio

mute

switch

©is

engaged,

the

LED

blinks.

23)

AUDIO

MUTE

CONTROL

©:

Push

this

to

fully

mute

the

output.

The

Volume

control

LED

blinks

when

mute

is

engaged.

24)

MONO

SWITCH

©:

Push

this

for

a

mono

signal.

You’ll

also

find

this

useful

to

reduce

background

noise

on

very

weak

FM

broadcasts.

25)

THE

REMOTE

CONTROL:

The

RC-65

hand

held

remote

controller

duplicates

all

front

panel

controls.

It

also

contains

additional

controls

that

are

used

only

from

remote

locations.

Basic

operating

instructions

are

on

the

rear

of

the

RC-65.

The

RC-65

is

a

“learning”

remote

and

can

be

programmed

to

operate

many

other

components.

6

ADVANCED

OPERATION

26)

SYSTEM

BALANCING:

After

you’ve

physically

set

up

your

system,

use

the

RC-65

remote

controller

to

balance

the

relative

outputs

of

all

speakers

to

fully

enjoy

the

spatial

benefits

of

Dolby

Pro

Logic

decoding.

A)

Verify

that

you're

in

Cinema

or

Dolby

Pro

Logic

mode

by

making

sure

that

the

appropriate

LEDs

(the

ones

to

the

left

of

“Cinema”

and

“Dolby

Pro

Logic")

are

lighted.

If

some

other

mode

is

indicated,

press

the

“Surround”

button

(front

panel

©or

remote

©)

until

the

proper

LEDs

appear.

B)

Activate

the

Balance

Check

circuit

by

pressing

the

“bal

check"

button

(front

panel

©or

remote

©).

A

test

tone

that

sounds

like

rushing

water

will

start

in

the

left

front

loudspeaker.

C)

Adjust

the

center

and

rear

channel

outputs

so

that

the

sequential

“rushing

water"

noise

is

equally

loud

when

heard

through

each

speaker.

Sit

in

your

favorite

chair

and

use

the

remote

control

for

this

adjustment.

D)

Turn

off

the

sequential

test

tone

by

pushing

the

“bal

check”

control

(©or

©)

again.

27)

SURROUND

and

DELAY

CHOICES:

The

GTP-600

gives

you

7

operating

modes

to

choose

from.

Choose

the

mode

best

suited

for

your

source

by

pushing

the

front

panel

or

remote

Surround

button(©&

©

respectively)

until

the

LED

beside

the

chosen

mode

lights.

If

no

LED

is

visible,

you

have

chosen

2

channel

stereo

(or

surround

bypass.)

Each

surround

mode

has

a

pre-programmed

delay

setting

chosen

to

best

complement

that

mode.

You

may

select

another

by

sequentially

pushing

the

delay

button

(©

&

©).

Note

that

not

all

delay

settings

are

available

with

all

surround

choices.

28)

ON-SCREEN

DISPLAY:

The

on-screen

display

gives

an

instant

status

check

of

selected

inputs,

operating

modes,

delay

choices,

etc.

Press

the

remote

control’s

Display

button

©

to

turn

on

the

display,

Press

it

again

to

turn

it

off.

EVERYTHING

YOU

NEED

TO

KNOW

This

section

uses

the

same

paragraph

numbers

as

the

preceding

QUICK

START

section.

We

hope

you

find

the

additional

information

useful

and

enjoyable.

OUT

OF

THE

BOX

-

-

1)

UNPACKING:

As

part

of

ADCOM’s

quality

control

procedures,

your

GTP-600

was

carefully

inspected

for

physical

imperfections

and

electrical

performance

before

it

left

our

plant.

In

the

event

of

physical

damage,

notify

your

ADCOM

dealer

immediately

and

request

help

in

filing

a

written

damage

claim.

THE

RIGHT

TO

A

CLAIM

AGAINST

A

COMMON

CARRIER

CAN

BE

FORFEITED

IFTHE

CARRIER

IS

NOT

NOTIFIED

PROMPTLY

IN

WRITING

AND

IF

THE

SHIPPING

CARTON

AND

PACKING

MATERIALS

ARE

NOT

AVAILABLE

FOR

INSPECTION.

SAVE

ALL

PACKING

MATERIALS

UNTIL

THE

CLAIM

HAS

BEEN

SETTLED.

The

foam

packing

and

carton

were

specifically

designed

to

protect

your

GTP-600.

Even

though

space

is

often

at

a

premium

in

today's

homes,

we

recommend

that

you

save

the

packing

materials

in

case

you

need

to

ship

the

unit

anywhere

in

the

future.

2)

PLACEMENT:

A

stable

supporting

surface

is

necessary.

The

more

massive

and

firmly

anchored

the

supporting

surface

is,

the

less

likely

you’ll

be

to

experience

any

problems.

3)

POWER

OFF!:

Turn

off

system

components

before

initial

installation

and

connection.

Remember

to

give

any

power

amplifiers

sufficient

time

to

fully

discharge

their

power

supplies

before

you

begin

your

connections:

30

seconds

after

turn-off

is

usually

sufficient.

CONNECTIONS

4)

F

M

ANTENNA:

The

“T”

shaped

300

ohm

dipole

antenna

supplied

with

the

GTP-600

will

probably

be

adequate

for

most

installations.

After

you’ve

connected

the

rest

of

your

system

and

turned

it

on,

select

Tuner

from

the

Audio

Source

selectors

©.

Then

choose

FM

by

pressing

the

FM/AM

selector

©

until

“FM"

appears

in

the

display

7

window.

Tune

to

an

FM

station.

Extend

the

top

of

the

“T"

antenna

and

rotate

it

to

the

position

that

results

in

the

best

reception.

Once

you've

determined

that,

fasten

the

antenna

to

the

wall,

a

cabinet

back

or

even

the

ceiling

so

t

at

the

T

is

aligned

as

closely

as

possible

to

the

direction

that

gave

you

the

best

reception.

Remember

that

the

dipole

antenna

is

directional

—

it

is

most

sensitive

to

signals

arriving

at

right

angles

to

the

extended

T

and

relatively

insensitive

to

signals

arriving

from

the

ends

of

the

"T."

The

dipol

e

antenna

rapidly

looses

its

effectiveness

when

rolled

up

or

carelessly

dropped

behind

a

cabinet,

etc

If

the

“T"

antenna

is

undesirable

from

a

functional

or

decor

point

of

view,

your

ADCOM

dealer

will

be

pleased

to

show

you

a

variety

of

indoor

antennas

that

might

be

more

appropriate.

We

do

suggest,

however,

that

you

ask

for

a

home

trial

as

reception

conditions

vary

enormously

from

location

to

location.

The

GTP-600

can

also

be

used

with

a

75

ohm

antenna.

These

are

usually

large

roof

mounted

antennas

and

can

provide

superior

reception

when

compared

to

the

300

ohm

‘'dipole.”

In

addition,

most

cable

companies

use

75

ohm

cable

to

distribute

FM

signals.

Connect

the

GTP-600

to

a

75

ohm

antenna

system

by

terminating

the

connecting

cable

with

an

“F”

connector

(available

at

most

electronic

parts

stores)

and

attaching

it

to

the

rear

panel

75

ohm

antenna

terminal

©.

The

grounding

schemes

used

by

cable

companies

are

very

complex

and

occasionally

cause

hum

when

the

cable

is

attached

to

the

75

ohm

antenna

input.

An

isolation

transformer

(again,

available

at

most

electronic

parts

stores)

will

usually

solve

the

problem.

5)

AM

ANTENNA:

The

supplied

movable

ferrite

“loop”

will

provide

reasonable

AM

reception

in

most

locations.

The

loop

should

be

rotated

away

from

the

body

of

the

GTP-600

and

some

experimentation

will

undoubtedly

improve

AM

reception.

K

In

the

event

that

you

need

better

reception,

you

can

make

your

own

AM

antenna

from

a

single

length

of

insulated

wire.

Connect

one

end

of

the

wire

to

the

terminal

marked

“AM"

and

run

the

other

end

to

a

high

location

in

your

home

or

hang

it

from

a

window.

In

most

cases,

a

second

wire

run

from

the

“Ground”

terminal

to

a

solid

earth

ground

(a

cold

water

pipe

for

example)

will

also

improve

AM

reception

as

well

as

provide

a

safe

“path

to

ground”

in

the

event

that

liqhtninq

strikes

an

outdoor

AM

antenna.

6)

AUDIO

SOURCE

HOOK

UP:

Patience

and

common

sense

will

help

you

avoid

almost

all

the

errors

you

might

make

when

rushing

the

initial

installation.

Remember

to

connect

Left

Channel

to

Left

Channel

and

Right

Channel

to

Right

Channel,

etc.

The

jacks

on

all

ADCOM

products

follow

conventional

color

coding:

White

for

Left

Channel

and

red

for

Right

Channel.

Most

interconnect

cables

observe

this

general

guideline:

the

connectors

on

each

end

ot

the

cable

are

usually

color

coded.

We

ve

received

many

questions

about

the

sonic

attributes

of

premium

interconnect

cables.

We

do

suggest

that

you

make

sure

any

cable

you

use

is

a

“low

capacitance"

design.

(Most

are.)

Your

ADCOM

salesperson

will

be

happy

to

make

cost-effective

recommendations

based

on

individual

component

characteristics

and

system

complexity.

8