Installation.and; Setup.manual - Bowers & Wilkins ISW-4 Mode D'emploi

English

Installation.and.

Setup.Manual.

Introduction
Dear.customer,
Thank.you.for.choosing.Bowers.&.Wilkins..Please.read.
this.manual.and.the.matching.amplifier.manual.fully.
before.unpacking.and.installing.the.product..They.will.
help.you.to.optimise.its.performance..B&W.maintains.a.
network.of.dedicated.distributors.in.over.60‑countries.
who.will.be.able.to.help.you.should.you.have.any.
problems.your.dealer.cannot.resolve.
Environmental Information
All.B&W.products.are.designed.to.comply.
with.international.directives.on.the.
Restriction.of.Hazardous.Substances.
(RoHS).in.electrical.and.electronic.equipment.and.the.
disposal.of.Waste.Electrical.and.Electronic.Equipment.
(WEEE)..These.symbols.indicate.compliance.and.that.
the.products.must.be.appropriately.recycled.or.
processed.in.accordance.with.these.directives..Consult.
your.local.waste.disposal.authority.for.guidance.
This.manual.covers.the.ISW‑4.in‑wall.subwoofer.and.
its.Back.Box..Operation.of.and.connections.to.the.
matching.SA250.Mk2.rack.mount.amplifier.are.covered.
in.a.separate.manual.supplied.with.the.amplifier.
Carton Contents
The.product.is.shipped.in.three.cartons:.the.ISW‑4.
Carton,.the.Back.Box.Carton.and.the.SA250.Mk2.
carton.
In.addition.to.the.Driver.Panel,.check.the.ISW‑4.carton.
for:
This.manual
1.x.Wall.Frame
1.x.Grille
1.x.Cut‑out.template
1.x.Adhesive.B&W.logo
1.x.Paint.mask
6.x.M5.bolts
1.x.Frame.Gasket
In.addition.to.the.Back.Box.itself,.check.the.Back.Box.
Carton.for:
1.x.Installation.Instructions
1.x.Gasket.roll
4.x.Brackets
12.x.M5.bolts
12.x.special.washers
12.x.locking.washer
The.ISW‑4.is.designed.both.for.Home.Theatre.
installations.and.to.augment.the.bass.performance.of.
'full.range'.speakers.in.2‑channel.audio.systems..All.
audio.installations.require.some.thought.in.installation.
if.they.are.to.reach.their.full.performance.potential.and.
this.manual.will.guide.you.through.the.process.
Subwoofer Positioning
The.ear.poorly.perceives.the.source.location.of.low.
frequency.sound.so.the.position.of.subwoofers.in.
the.listening.room.is.generally.less.critical.compared.
to.full‑range.speakers..That.said,.however,.best.
results.are.usually.obtained.if.the.subwoofer.is.placed.
between.the.left.and.right.speakers.or.in.the.vicinity.of.
one.of.them..If.two.subwoofers.are.used.it.is.best.to.
put.one.near.the.left.and.one.near.the.right.speaker..
Locating.a.subwoofer.on.one.side.wall.of.the.listening.
room,.even.behind.the.listening.position,.is.also.possible.
but.generally.results.in.inferior.imaging..It.may.be.an.
acceptable.compromise,.however,.especially.in.multi‑
channel.AV.systems,.if.domestic.considerations.dictate.
As.with.all.speakers,.the.proximity.of.room.boundaries.
affects.the.sound.of.a.subwoofer..Bass.volume.
increases.as.more.surfaces.come.into.close.proximity.
with.the.speaker..Unlike.full‑range.speakers,.however,.
the.overall.system.balance.can.be.corrected.by.
adjusting.the.volume.level.of.the.subwoofer..The.more.
boost.gained.from.the.room,.the.lower.the.volume.
can.be.set.and.the.less.hard.the.subwoofer.has.to.
work;.but.there.is.a.down.side..Subwoofers.positioned.
near.corners.often.generate.more.low‑frequency.
room.resonances,.making.the.bass.more.uneven.with.
frequency..
Using.multiple.subwoofers.in.a.single.installation.can.
improve.performance.in.the.following.ways:.
•. . M aintains.stereo.separation.to.the.lowest.
frequencies.
•. . S moothes.out.the.effects.of.low.frequency.room.
resonances.
•. . E nables.a.higher.maximum.sound.output.
In.the.case.of.two.subwoofers.used.in.a.2‑channel.
audio.system,.stereo.separation.will.only.be.improved.
if.each.channel.has.its.own.subwoofer.located.close.to.
the.appropriate.satellite.speaker.
Subwoofer Installation
The.ISW‑4.in‑wall.subwoofer.is.intended.for.
installation.within.new.build.drywall.(stud.wall).or.solid.
construction.(brick.or.block‑work).walls..In.both.cases.
installation.must.begin.before.plaster.and/or.sheetrock.
(plasterboard).is.applied.to.the.wall..It.is.possible.to.
install.the.subwoofer.in.an.existing.drywall.but.the.
amount.of.subsequent.wall.re‑build.may.make.such.an.
exercise.impractical..Carefully.consider.the.implications.
of.installation.in.an.existing.wall.before.going.ahead..
The.Back.Box.supplied.with.ISW‑4.defines.its.acoustic.
loading.and.must.be.used.for.correct.operation.
Stage 1: Fitting the Back Box
Drywall (stud wall) construction
Ensure.the.wall.studding.is.properly.prepared.so.that.
there.is.sufficient.clearance.for.the.Back.Box.and.its.
cable.entry.gland..The.Back.Box.is.intended.to.fit.
between.two.adjacent.wall.studs.(battens).on.standard.
40cm.(16.in).spacing..A.cross.brace.(a.noggin).should.
be.positioned.directly.above.the.subwoofer..The.
subwoofer.driver.aperture.should.be.located.at.the.
bottom..See.Figure.1.
7