ARC Audio X2 450.4 Посібник користувача - Сторінка 4
Переглянути онлайн або завантажити pdf Посібник користувача для Підсилювач ARC Audio X2 450.4. ARC Audio X2 450.4 12 сторінок. Full-range class d amplifier
Input Section
This X2-Series amplifier is equipped with a balanced
differential input stage that is compatible with any analogue
source including Balanced and Unbalanced RCA, Common
ground speaker level output and Bridged Tied Load (BTL)
outputs common to many OEM head units. The RCA pigtails
included with these amplifiers are intended to be used with
the speaker-level outputs of a radio or amplifier. These pigtails
include a divider network molded into the RCA end that
reduces the voltage of the signal from the source. If you re
integrating into an OEM system with balanced or common
ground line-level signals you should not use these Pigtails.
In this case it is recommended that you use an appropriate RCA cable with one set of ends removed as inputs for the
amplifier.
Gain / Sensitivity Control
Because of the wide range of head unit output configurations
available, all ARC Audio amplifiers have an adjustable input
sensitivity or "Gain" control. The gain is not a volume or a
power limiting control like a throttle. It makes the amp more
sensitive to input from the source. With the gain up the amp
will reach full output at a lower volume setting on the deck
and 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. As different size and
shape speakers require different amounts of power to reach the same output, the gain settings need to be adjusted to
compensate for these speaker efficiency differences. If you tried to set all the gains at half way you would probably find
the system didn't sound very good. Use good judgment and optimize each channel carefully as you configure the system.
You want to set the gains to maximize the output of the amplifier, while producing minimal distortion for your given source
unit and music selection.
Crossover Controls
A crossover is a circuit that limits what frequencies are
produced by the amplifier, and subsequently, the speaker(s)
connected to the amp. A tweeter can be destroyed by bass
information. Those frequencies need to be filtered for proper
operation. Likewise, a subwoofer will not sound natural if it
is playing midrange frequencies. A crossover removes these
sounds from the signal going to the speaker. As you might
guess, careful adjustment is required to ensure that all the
speakers are playing in the correct frequency range and that
the net frequency response of the total system is smooth with
no over- or under-lap.
Bass Boost
This amp has an adjustable Bass Boost acts like a single-
band equalizer on channels 3 and 4. When designing your
audio system, if you plan to use Bass Boost (Example:
Running a Subwoofer), connect that speaker to channels 3
and 4. Begin your adjustments at a low volume. If you do not
hear any improvement, then the woofer does not need any
boost. Use the Bass Boost control carefully. Increasing low-
frequency output puts tremendous demands on the speaker
and amplifier. Where possible, try to minimize use the of the
Bass Boost control by changing the subwoofer position, the
subwoofer enclosure design or the number of subwoofers in
the system.
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