The.rear.panel - Blackheart BH1H Killer Ant User Manual

The Rear Panel
The.rear.panel.has.connections.for.the.AC.
power.cord.and.external.speaker.cabinets.
WARNING!.Never.turn.on.or.use.the.ampli-
fier.without.a.load.or.speaker.connected.to.
the.amplifier..
5. AC Power Input with Mains Fuse:.
Your.amplifier.is.equipped.with.a.
detachable.power.cable.that.plugs.into.
the.IEC.Mains.socket.on.the.back.of.the.
amplifier..The.AC.power.cord.should.
only.be.plugged.into.a.grounded.power.
outlet.that.meets.all.applicable.electri-
cal.codes.and.is.compatible.with.the.
voltage,.power,.and.frequency.require-
ments.stated.on.the.rear.panel.of.the.
amplifier..Do.not.attempt.to.defeat.the.
safety.ground.connection..The.AC.Mains.
fuse.is.located.in.the.IEC.Mains.socket.
and.is.used.to.protect.the.amplifier.
from.electrical.faults..If.the.fuse.needs.
to.be.replaced,.please.refer.to.the.
correct.fuse.specifications.located.on.
the.back.panel.of.the.amplifier..Always.
unplug.the.power.cord.when.changing.
or.inspecting.the.fuse..Never.bypass.
the.fuse.or.replace.it.with.a.wrong.type.
or.value..
6. 16 OHMS: The.16.ohm.speaker.output.
jack.is.designated.for.16.ohm.speaker.
cabinets.only,.such.as.the.Blackheart.
BH110,.BH112,.BH412SL.or.BH412ST..
7. 8 OHMS:.The.8.ohm.speaker.output.
jack.is.designated.for.use.with.one.8.
ohm.speaker.cabinet,.or.two.16.ohm.
cabinets.that.are.connected.parallel..

8 7 6 5
8. 4 OHMS:.The.4.ohms.speaker.output.
jack.is.designated.for.use.with.one.4.
ohm.speaker.cabinet,.or.two.8.ohm.
cabinets.that.are.connected.parallel.
Connecting speaker cabinets
The.hookup.diagrams.on.the.next.page.
show.some.different.cabinets,.their.imped-
ance,.where.to.plug.them.in,.and.the.total.
load.impedance.placed.on.the.amplifier.
ALWAYS.use.good.quality.(non-shielded).
speaker.cable.to.connect.speaker.cabinets..
Never.use.(shielded).instrument.cable.
ALWAYS.match.the.amplifier's.speaker.
output.impedance.to.the.impedance.of.the.
speaker.that.is.being.used.
•
Use.only.one.output.at.a.time.
•. If.more.than.one.speaker.is.connected.
together.in.parallel,.make.sure.they.all.
have.the.same.impedance.rating.
•. When.using.multiple.speaker.cabinets.
(with.the.same.impedance.rating),.
match.the.total.load.impedance.of.the.
speaker.cabinets.to.the.speaker.output.
of.the.amplifier.
For.equal-impedance.speakers.connected.in.
parallel,.the.first.law.of.rock.and.roll.states:
SPEAKER.CABINET.IMPEDANCE.divided.by.
NUMBER.OF.CABINETS.=.TOTAL.LOAD