Atlantic Technology A-2000 Manuale di istruzioni - Pagina 5

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Instruction Manual

Connecting The A-2000

Whenmakingconnectionsbetweenanysourcecomponentsandtheampli-
fier, or when making connections to any speaker, be certain that both the
input device(s) and the amplifier are turned off to assure that there will be
no unwanted signal transients that can damage the equipment or speakers.
As a rule,it is always best to unplug all equipment before making any con-
nections, as many electronic products have a standby mode that may be
activated although the product may appear to be turned off.

Input Connections

Connecting the amplifier to your source equipment is simple. Using high
qualityaudiointerconnect("RCA")cables,matchtheoutputchanneldesigna-
tions on the rear of your processor (or other source equipment) to the input
jacks on the rear panel of your amplifier that have the same channel name
(see page 4).When making these connections, make certain to gently, but
firmlyinserttheplugintothejack.Looseconnectionscancauseintermittent
sound and may damage your speakers.
The outer ring of the barrel assembly of some RCA plugs may be very tight,
and it is important to assure a proper connection between the interconnec-
tion cable and the input jack.Gently twisting the connector as you insert it
can often ensure good connections and full insertion.

Speaker Connections

Toassurethatthehighqualitysignalsproducedbyyouramplifierarecarried
toyourspeakerswithoutlossof clarityorresolution,werecommendthatyou
use high quality speaker wire.Many brands of wire are available; the choice
maybeinfluencedbythedistancebetweenyourspeakersandtheamplifier,
the type of speakers you use,personal preferences,or other factors.
Regardlessof thebrandortypeof speakerwireselected,werecommendthat
youuseawireconstructedof fine,multi-strandcopperwithagaugeof 14or
heavier.Remember that in specifying wire,the lower the gauge number,the
heavier the cable will be.Wire with a gauge of 16 may be used for short runs
of less than ten feet.We do not recommend that you use any wires with an
AWGequivalentof 18gaugeorlighter,duetothepowerlossanddegradation
in performance that may occur.
To connect the amplifier to your speakers a pair of multi-way binding posts
is provided for each channel output.These posts will accept bare or tinned
wire,pin connectors,spade lugs or"banana"type plugs,when they are per-
mitted by local safety agencies.If bare wire is used for the connections,strip
approximately 1/2 to 3/4 inch (20mm) of insulation from the end of each
wire and carefully twist the strands of each conductor together. Be careful
not to cut the individual strands or twist them off.
Correct polarity connections (+ to +, - to -) are important to maintain
proper speaker phasing. When speaker phasing is correct, all speakers
move in and out together, preserving the imaging and bass response of
the program material. Out-of-phase connections mean that some speaker
cones will be moving in, while others move out. This will cause indistinct
or confused imaging, and muddled and cloudy sounds and lack of bass
response.To avoid incorrect phasing or polarity,be certain to use cable that
hasdistinctmarkings,colors,stripes,wording,orgroovesoneachsideof the
speaker cable.When making connections to the amp and speakers,adhere
to a consistent pattern of using one side of the wire to the red terminals and
the other side to the black terminals.When using cable with markings on
one side only, traditional convention is to consider the marked side of the
wire as the red,or positive (+) connection,and the non-marked side as the
black or negative (-) connection.
Loosen the knobs of the amplifier's speaker output terminals,far enough so
thatthepassthroughholeisrevealed.Followtheproperconnectioninstruc-
tionsforyoursystem(andasoutlinedabove)withregardtowhichterminals
are used.Once the connections are made,twist the cap back so that the con-
nection is secured,but do not over tighten or use tools,as this may break the
delicate wire strands and decrease system performance.
If you are using spade lugs, connect them to the speaker wire using the
manufacturer's instructions then loosen the caps on the amplifier's speaker
terminals.Placethelugsbetweentheplasticcapandthebackof theterminal.
Be sure to observe proper polarity, using the appropriate speaker hook-up
icons for your system's configuration. Using your fingers, tighten to obtain
a positive contact.
When using banana plugs, connections may be made by simply inserting
the appropriate jack affixed to your speaker wire into the hole provided on
the rear of the colored screw caps on the binding posts.Before using banana
typejacksmakecertainthattheplasticscrewcapsarefirmlytighteneddown
by turning them in a clockwise direction until they are snug against the
chassis. This will insure that the maximum surface area of the plug is in
contact with the jack when it is inserted. Once again, be certain to observe
proper polarity.
Runthecablestothespeakerlocations.Itisrecommendedthatthelengthof
wire connecting any pair of speakers be similar.For example,make certain
that the wire length connecting the left and right front,or the left and right
rear(surround)speakersaresimilarinlength,eventhoughonespeakermay
be physically closer to the amplifier than the other.Do not coil and/or wrap
the excess wire around itself, as such a coil makes an inductor that creates
frequency response variations in your system. Finally, connect the wires to
the speakers, again being certain to observe proper polarity. Remember to
connect your negative and positive wires to the matching terminal on the
speaker.
NOTE: While most speaker manufacturers adhere to an industry
convention of using red terminals for positive connections and black
terminals for negative, some manufacturers may vary from this con-
figuration. To assure proper phase connections, and optimal perfor-
mance, consult the identification plate on your speaker terminals, or
the speaker's manual to verify polarity. If you do not know the polarity
of your speaker, consult the speaker's manufacturer for further infor-
mation.
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Connecting the A-2000