ARC Audio FD2200 Руководство пользователя - Страница 3

Просмотреть онлайн или скачать pdf Руководство пользователя для Усилитель ARC Audio FD2200. ARC Audio FD2200 10 страниц. Arc audio owner's manual high performance audio amplifier fd2100, fd2200, fd4100, fd4150

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Input Section

Because of the wide range of head unit output configurations all ARC Audio amplifiers

have an adjustable input sensitivity or "Gain" . The gain is not a volume or a power

limiting control like a throttle. It makes the amp more sensitive to input from the stereo.

With the gain up the amp will reach full output at a lower volume setting on the deck. At

higher gain settings the amp also becomes more sensitive to noise from the car's

electrical system. Try to run the gain at the lowest setting possible for you system.

There is no correct gain setting. Because

speakers require different power demands to

reach the same output, the gains most often

need to be used to compensate for these

differences. If you tried to set all the gains at half

way you would probably find the system didn't

sound very good. Using good judgment and

listening carefully to each speaker is still the

best way to tune a system.

Input Mode Switch

All ARC Audio amplifiers include an input mode switch. This switch controls the signal

being sent to the amplifier sections. Most 2-channel amplifiers can be bridged into a

single channel however if the signal to the channels is not exactly the distortion will

increase significantly. The mode switch solves this problem by offering 3 modes of

operation.

Stereo

This is simple 2 channel stereo operation. Use this setting for most applications that do

not involve bridging the output.

Bridge (R IN)

On a 2-channel amp only the Right channel input will be split and sent to both outputs.

You need only use the Right gain. On a 4 channel the right RCA will be sent to the front

outputs. The left RCA will be sent to the rear outputs. This is a great way of get high

power to a component set. The amplifier now acts like a 2 channel that makes full power

at 4 ohms.

L+R SUM MONO

This is the mode for bridging a subwoofer. Both the

left and right channels are combined into a mono

signal that is then split and sent to both output. This

will give you a true mono output.

Crossover Controls

A crossover is a device that removes unwanted frequencies from a speaker or

amplifier. A tweeter can easily be destroyed by bass notes if they are not filtered out.

Likewise a subwoofer will not sound natural if it is playing midrange notes. A

crossover removes these sounds from the

speaker. As you might guess, careful adjust-

ment is need to ensure that all the speakers

are playing the right sounds and that you are

left with no "holes" or low spots in the

frequency response.

Bass Boost

This amp has a fully adjustable bass boost. Both the frequency and the level of the boost

are adjustable. Start with a small increase in the level control. Then "sweep" the

frequency up and down. Listen carefully for an improvement in the sound of the bass. If

you do not hear any improvement then the

woofer does not need any boost.

Use Bass Boost carefully. The demands on

power output are tremendous. Try to minimize

the use by changing woofer position or the

enclosure size.

Speaker outputs

This amplifier is a multi channel amplifier design. Meaning it has more than one

channel of speaker outputs. It is equipped with a large block style terminal for speaker

connection. Make this connection carefully and neatly. Strip your wire back and twist

the exposed leads and insert into the block terminal while being careful that there is no

loose or frayed strands of wire and tighten the Phillips head screw down on the

terminal till the wire is tightly secured in place. If the wires ever come in contact with

each other the amplifier will go into protection.

Know your total ohm load before you make

any connections.