Amplifier Technologies, Inc. AT1800 Series Kullanıcı El Kitabı - Sayfa 5

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Connecting Your Amplifier

When making connections between any source components

and the amplifier, or when making connections to any speaker,

be certain that both the input devices and the amplifier are

turned off. To assure that there will be no unwanted signal

transients that can damage equipment or speakers, it is always

best to unplug all equipment before making any connections.

Input Connections

Connecting the amplifier to your source equipment is simple.

Using high-quality audio interconnect cables, match the

output channel designations on the rear of your source

equipment to the input jacks on the rear panel of your

amplifier that have the same channel name. When making

connections with RCA type plugs on interconnect cables,

make certain to gently, but firmly, insert the plug into the

jack. Loose connections can cause intermittent sound and

may damage your speakers. Some quality RCA plugs may be

very tight, and it is important to assure a proper connection

between the interconnection cable and the input jack.

Speaker Connections

To assure that the high quality signals produced by your

amplifier are carried to your speakers without loss of clarity

or resolution, we recommend that you use high quality

speaker wire. Many brands of wire are available; the choice

may be influenced by the distance between your speakers

and the amplifier, the type of speakers you use, personal

preferences, or other factors.

Regardless of the brand or type of speaker wire selected, we

recommend that you use a wire constructed of fine,

multi-strand copper with a gauge of 14 or less. In specifying

wire, the lower the number, the thicker the cable. Wire with

a gauge of 16 may be used for short runs of less than twenty

feet. We do not recommend that you use any wires with an

AWG equivalent of 18 or higher due to the power loss and

degradation in performance that will occur.

To connect the amplifier to your speakers, a pair of binding

posts is provided for each channel output. These posts will

accept bare wire, spade lugs or banana type plugs. If bare

wire is used for the connections, strip approximately 1/2 inch

to 3/4 inch 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.

All strands must be used for optimal performance.

Correct polarity connections are important to maintain

proper speaker phasing. When speaker phasing is correct, all

speakers move in and out at the same time, preserving the

imaging 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. To avoid incorrect phasing or

polarity, be certain to use wire that has distinct markings,

colors, stripes, wording, or grooves on each side of 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.

Next, loosen the knobs of the amplifier's speaker output

terminals, far enough so that the pass through hole is revealed.

Follow the proper connection instructions for your system

with regard to which terminals are used. Once the connections

are made, twist the cap back so that the connection 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, and then loosen the

caps on the speaker terminals. Place lugs between the plastic

cap and the back of the terminal. 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 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 type jacks, make certain that the

plastic screw caps are firmly tightened down 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. Be certain to observe proper polarity.

Run the cables to the speaker locations. Do not coil any excess

cable, as this may become an inductor that creates frequency

response variations in your system. Finally, connect the wires

to the speakers, again being certain to observe proper polari-

ty. Remember to connect your negative, or black wire, to the

matching terminal on the speaker. The positive, or red wire,

should be connected 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

configuration. To assure proper phase connections, and optimal

performance, 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 information.

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