Innersound RCP-1 Manuale utente

;

RCP-I lnnersound

Reference

Pream

ifier

Owner'sManual

Table

of Contents

INSTALIATION

OPERATION

CARE

AND

CLEANING

SPECIFICATIONS

WARRANry

INSTALLATION

rocArlorr

OurReference

Preamplifier

isbest

situated

onits

own

shelf

inarack

bookshelf

whereitwillperform

atitsbest.

lrrPUTcorilEcTtoilS 3|nd sysTE}| ruRr oll/oFF

signalinput

ismade

through

goldptated

RCA

(unbalanced)

orXLR

(balanced)

connectors.

Atotal

of sixinputs

are

available,

three

ofwhich

provide

bothXLR

andRCA.

The

other

threeinputs

areRCA

only- Thisis

a"line

stage"

preamp,

although

theinputs

have

specific

labels,

they

are

allatline

level,

areidentical

infunction,

and

canbe

used

with

any

line-level

component.

Thefirst5 inputs

(cD,

Tuner,

Video,

Aux,

processor)

are

"main"

inputs.

The

last

one

(Monitor)

a"loop"

with

afixed

level

output

associated

with

it. The

"Monitor"

loop

issometimes

calleda"Tape

Monitor."

lt is

designed

to beused

with anaudiorecorder

(cassette,

DAT,

CDR,

minidisk,

etc.)where

thecurrentlv

selected

input

source

isrecorded.

This

outputisunaffected

bytheoverall

system

volume,

sotherecording

level

isnot

alteredifyou

need

to adjust

thelistening

lever.

OUTPUTCOIIilEGTIOIIS

There

are

two separate

outputchannels

through

gordprated

RCA

(unbalanced)

orXLR

(balanced)

connectors.

The

balanced

and

unbalanced

connectors

arenot

to beused

simultaneously

onasingle

output

channel.

POWER COII]IECTTOIIS

certainallassociatedequipmentis

turnedoffbefore

plugging

the

preamp.

Insertthe

power

cord

into

theACLINE

INPUTonthe

back

panel

andthenconnectitto anappropriate

power

source.Then

youmayturn

vour

othercomoonents.

The

preamplifier

designedto be

left

oncontinually.

leaving

the

electronics

on,theystaywarm

andarealways

intheir

optimumoperating

stateand

readvfor immediateuse. However.

thereis

a power

switch

provided

ontherear

panel

foroccasionswhen

you

wouldliketo turn

yourpreamplifier

off(i.e.

yougo

awayonvacation

orthereis

alightning

storm).

The

preamplifier

uses

justafewwatts

of power

power

consumption

notanissue.Allindicator

lightsarelight

emitting

diodes

(LEDs),

including

thedigital

display,sotheywillneverburn

outor need

reolacement.

ETECTRTCAIPROTECTTO]I

Althoughnot

essential,

itisa

good

ideato useasurge

protector

prevent

damage

toyour

expensiveequipmentin

theeventofanelectrical

stormor othercausesof abnormallyhighvoltage.

These

are

inexpensive

andcan

obtainedfromanvhardwarestore.You

do notneedto usean

expensivelineconditioner,butif

you

do,thesenormallywillhave

surge

protection

built-inso

you

donotneed

to useadditional

surge

protection.

TheAClinevoltage

and

line

fuseofthepreamplifier

are

preset

atthe

factoryforyour

location.lf it isnecessary

to change

thesesettings,

contactthe

factory

for instructions.

OPERATION

TheInnersoundReferencePreamplifieris

asophisticated,computer

operatedunitthathas

manyfunctions.Despiteits

complexity,it appears

very

simple. Greatcareandthought

were

put into makingit "user

friendly"

and

ergonomicallywell

designed.Allof thefollowingfunctions

areavailablefrom thefront panel

controlsandbyremote

control. Each

functionislistedbelowwithdirections

onhowto operate

it.

IIIPUT SELECTIOII

Press

theappropriately

labeled

button

onthefront panel

to select

source.Whenactivated,

asmall,

blue

LED

abovetheswitchwilllight.

Thefour"main"

inputs

(CD,

Tuner,Video,Aux)

operatetogethersothat

selectinganyoneof theseinputsswitchesouttheothers.

The

"Monitor"

buttontoggles

between

your

recorder

andwhatevermain

inputisselected.lftherecorder

hasa monitoringfunction

(where

the

recordingcanbe

played

backduringrecording),

you

can

set

your

recorderfor playback

andbypressing

the"Monitor"

button,

youcan

switchbetweentheinputsourceandtherecorder's

playback.

Thisway

you

can

"monitor"

andcompare

the

quality

ofyour

recording

to the

source.

STAilDBYE

Use

this switchto togglebetweenstandbyemode

andoperationmode.

Wheninstandbye,

the

displayis

turnedoffwhiletheblue

"standbye"

LED

isilluminated.

Standbyeturnsoffthesignaloutputswhile

stillkeepthe

remaining

audiocircuits

infull

operation.

RESET

Use

this

function

to resetall

preamplifier

settings

totheirdefault

factory

setting.Resetting

theunitis

done

byholding

inthe"RESET"

buttonuntil

"rE'is

displayed

inthecenter

display.

Since

someof

the

preamplifier

functions

areonly

accessed

theremotecontrol,

theresetbutton

provided

to getback

to a"normal

operating

mode

iftheremote

control

notavailable.

UOTUTE

Thestargate

knobsurrounding

thenumber

displayadjusts

the

output

levelofthepreamplifier

inprecise

dBstepsacross

a rangeof t00dB.

Thiscontrol

rotates

continually

- it isnotlimitedto the280degree

rotation

of conventional

rotarycontrols.Thedigitalreadout

shows

the

output

levelin I dBincrements

between

thenumbers

"00"

and

"99"

Thevolume

control

isnotaconventional

potentiometer

- it isanoptical

device

that

controlsa microprocessor.

Unlike

conventional

stepped

resistor

ladderattenuators,

thismicroprocessor

has

notransient

clicksor

pops

you

change

the

volume.Likearesistor

ladder,thelevelof each

channel

isclosely

matched

sotheleft/rightbalance

willremain

constant

you

adjust

thelevelupand

down. Thetolerance

iswithin0.1%,

which

isvastlybetterthaneven

the bestconventional,

dualstereo

potentiometers.

BAIA]IGE

Use

themode

button

andthestargate

volume

knobto controlthe

left/right

balance.

Pressing

themode

button

willtogglebetween

"Main",

"Right",

and

"Left."

Inthewindow

tothenumber

display

aretwo

indicatordiodes

identifyingtheright

(red)

and

left

(green)

modes.

Inthe

"Right"

and

"Left"

modes

thestargate

functions

to control

therightor left

channel

volume.

A level

of"00"

inthe

number

displav

means

zero

attenuation

(ormaximum

volume).

SYSTET GAI]I

Innersound's

unique

balancecontrol

makes

it possible

to adjust

the

overall

system

gain. Forexample,

let's

assume

you

wantto reduce

the

gain

by l0 dB. Simply

press

the

"MODE"

button

once'

which

willswitch

you

tothe

rightchannel.

Reduce

the

gain

byl0 dB

with

the

volume

knob. Press

the"MODE"

button

again,

which

willswitch

you

to theleft

channel.

Reduce

the

gain

that

channel

byl0 dB. Pressthe

"MODE"

button

again

to return

to "MA|N."

Thechannels

willbein perfect

balance,

but

their

levels

willbereduced

exactly

l0 dB. Asproof

ofthis,

you

willsee

that

for agiven

acoustic

output

level,

you

willhaveto turnup

the

volume

sothenumber

indicator

reads

l0 dB

higher.

Why

would

you

want

to dothis?

There

are

many

reasons.

Forexample,

you have

retatively

deticate

speakers

and

anextremely

powerful

amplifier,

you

canoverdrive

thespeakers

and

damage

them. Byreducing

thegain,

you

can

limit

the

output

to any

safe

level

you

wish.

Another

reason

forcomfort.lt iseasy

to accidently

set

the

volume

too

high

and

get

avery

loud

"blast"

of music

you

didn't

expect.By

setting

the

gain

that

the

maximum

loudness

level

indicated

dB,the

level

willnever

excessive.

RETOTE COIITROT

The

RCP-l

Preamplifier

isdesigned

to operate

viathe

frontpanel

controls

and

remote

control.

The

following

functions

are

controllable

byremote

control.

5TA]IDBVE

Usethisfunctiontotogg|ebetweenoperationmodeandstandbyemode.

rtofutE UP/nosil

Use

this

function

to increase

ordecrease

the

overall

volume

level'

GD/D|3C

Select

use

this

function

toselect

the

source

connected

the

cD/Dlsc

input'

TUITER/Iil2 9ele6

use

this

function

toselect

the

source

connected

tothe

TUNER/|N2

inOut'

UrDEO/rill select

Use

this

function

toselect

the

source

connected

tothe

VIDEO/lN3

input'

AUX/lntt Select

use

this

function

toselect

the

source

connected

tothe

AUX

/lN4

input'

toruTOR Select

use

thisfunction

to select

the source

connected

to the MoNITOR

inputor

to listen

to the

output

ofyourrecording

device'

PnocEssoR Sebct

use

this

function

toselect

the

source

connected

tothe

PROCESSOR

input

tolisten

tothe

output

your

video

processor'

If,UTE

use

this

function

totemporarily

turn

off

the

output

the

preamplifier'

roilo

Use

this

function

to toggle

between

monaural

and

stereo

output' The

light

indicates

the

mono

position'

This

function

is*:,1t^"-Y-i:

checking

to see

that

yourspeakers

are

inphase

solid

c:T: t;1lt-:

should

bepresent

inmono)

and

forchecking

system

left/right

balance'

PHASE NET'ER5E

use

this

function

toshift

the

phase

the

output

audio

180

degrees'

D|SPI.AY BRIGHT]IESS

Use

this

function

to adjust

thebrightness

ofthecenter

display

between

fourdifferent

settings-

toDE Select

use

this

function

to shift

between

"right".

"left",and

"main"volume

settings.

CARE

AND CLEANING

lfyouwishtocleanyourpre-amplifier,useag0%lsopropylAlcohol'

Window

cleaners

"Windex"also

work

well' Do

notuse

anv

abrasive

cleaners

or chemical

solvents

"AjaX",Acetone,

or paint

thinners'

use

particular

care

not

todamage

the

aluminum

chassis'

Aluminum

medium

hardness

metat

and

although

it isanodized,

it can

easily

scratched

thecareless

use

oftools

during

installation'

or byrough

handling.

Theunit may

overheat

and

thefinishmay

fadeif exposed

to direct'

unfiltered

sunlight

or intense

heat

for prolonged

periods'

save

yourboxandpacking

materials.

They

wiltbe

very

helpful

for

moving

or ifyouneed

to ship

theunit

forany

reason'

SPECIFICATIONS

CIRCUIT SPECIFIGATIOIIS

ffiprrts

Six

inputs

atline

level,

inctuding

atape

loop-Three

inputs

offering

balanced

using

XLR

connector-

Outputs

Three

outputs

atline

level.

One

fixed

level

output

(monitor

loop)

andtwo

controlted

byelectronic

attenuator,

(both

with balanced

andsingle

ended).

Bcndwtdth

Dlstortlon

Less

than

0.01%

froml0

higher,

shunted

1000

Goln

to 40 kHz@

5voltsoeak

into600ohms

orless.

Input lmpedonce

47kohms

balanced

or single-ended

ilolse

Greater

than 100dB

below

1volt reference

Ontput lmpedrrnce

ohms,

non-reactive,

batanced

or single-ended

torlrnum OutPUt

ct1osstoltr

Better

than70dB

20kHz

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