Level Control; Important - Blaupunkt GTA 475 Instrucciones De Manejo E Instalación

GTA 475
tion.system).via.a.3.5.mm.jack.plug.optionally.
to.the.Front.and/or.rear.Direct.aux.input..
all.signal.sources.will.then.be.heard.simulta-
neously.and.their.volume.must.be.adjusted.
on.the.respective.source.device..
Note:
all. aF. sources. must. be. set. to. off. during.
installation.and.connection!
Installing the jack-plug cable
please.use.our.5.m.jack-plug.cable.(order.no..
7.607.001.55).to.make.the.connection.
a.special.feature.is.that.it.has.its.own.on/off.
switch..
Switch position is OFF:
During. installation. and. de-installation. and.
when.no.aF.source.is.connected.
Switch position is ON:
only. after. an. aF. source. has. been. con-
nected.
Caution:
When.making.the.connection,.always.set.the.
volume.control.to.minimum.and.switch.off.
the.amplifier.
if.you.want.to.listen.to.an.audio.source.over.
the.front.and.rear.loudspeakers,.you.must.
connect.the.Direct.aux.inputs.using.our.jack-
plug.Y.cable.(7.607.001.54).(see.Fig..6).

Level control

the. level. control. enables. the. input. sensitivity.
of. the. final. stage. to. be. matched. to. the. output.
voltage.of.your.car.radio.preamp.output.
the.range.of.adjustment.extends.from.0.1.v.to.
8.v..
adjust. the. input. sensitivity. in. accordance. with.
the.manufacturer's.specifications.when.connec-
ting.the.amplifier.to.other.radios.

Important:

turning. the. level. control. clockwise. increases.
the.input.sensitivity.of.the.amplifier,.and.there-
by.also.the.volume..the.level.control.is.however.
not. a. volume. control;. an. increase. in. volume. is.
not. achieved. in. the. maximum. position,. even. if.
this.subjectively.appears.to.be.the.case..the.sy-
stem.merely.increases.the.volume.more.quickly.
when.the.volume.is.turned.up.on.the.radio..
8
Loudspeaker connections
(if.the.amplifier.is.to.be.connected.in.a.bridged.
mode,. proceed. with. the. section. "Bridged. lou-
dspeaker.connections".)
as.with.any.audio.component,.connection.of.the.
amplifier.and.speakers.with.the.correct.polarity.
is.essential.for.good.bass.reproduction..ensure.
therefore.when.connecting.that.the.positive.(+).
amplifier. terminal. is. connected. to. the. positive.
(+). loudspeaker. terminal.. the. same. applies. to.
the.negative.(-).terminals..the.left-hand.ampli-
fier.channel.must.also.be.connected.to.the.left-
hand. loudspeaker. and. the. right-hand. amplifier.
channel.to.the.right-hand.loudspeaker.
Bridged loudspeaker connections
the.gta.can.also.be.bridged.in.a.mono.configu-
ration..this.enables.you.to.use.the.amplifier.for.
one.or.more.subwoofer(s).or.a.mid-range.spea-
ker..in.this.configuration.the.amplifier.sums.the.
right-hand. and. left-hand. channels,. delivering. a.
single.channel.(mono).output.
Note:
the.amplifier.can.sum.the.right-.and.left-hand.si-
gnal.information.only.if.both.the.right-.and.left-
hand.rca.connections.have.been.made.
CAUTION:
the.amplifier.must.be.presented.with.a.load.of.
4.ohms.or.higher.in.bridged.mode..a.lower.load.
will.cause.the.amplifier.to.overheat.or.switch.off..
this.can.lead.to.permanent.damage.of.the.unit.
Adjustment of the type and range of the
cross-over frequencies
the. type. of. crossover. (i.e.. "low-pass". or. "hi-
pass").and.the.desired.crossover.frequency.can.
be.selected.on.the.gta.475..if,.for.example,.you.
wish. to. drive. a. pair. of. subwoofers,. connect. in.
accordance.with.the.low-pass.diagram.(fig..3)..
the. crossover. frequency. is. dependent. upon.
the. loud-speaker. frequency. range. (consult. the.
loudspeaker.manufacturer's.data.for.the.recom-
mended.frequency.range)..
"High- Pass"
at.a.of.50.hz.,.the.loudspeaker.has.a.frequency.
range.of.50.hz..to.35.000.hz.
"Low-pass" frequency control
this.control.is.active.when.the.switch.is.set.to.
"low-pass".and.permits.selection.of.the.desired.
crossover.frequency..