ARC Audio KS 900.6 Benutzerhandbuch - Seite 3
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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.
Note: Important New Feature
Center Channel Input
The KS 900.6 is equipped with a optional Center Channel input. This option will change
the operation of the Sub 2 output. When the Center Channel switch is push in all the
controls from the Sub crossover are bypassed and
you will be able to use the High Pass controls next to
the Center Channel switch.
Note: When Center Channel is Off all the Sub controls
will effect Sub 1 and Sub 2 equally.
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 same 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.
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Bridge (R IN)
On this amplifier the Right RCA Front will be sent to the front outputs. The Left Front 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.
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 adjustment 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 an adjustable bass boost on SUB 1 and SUB 2 only. If the CENTER option is
being used the BASS BOOST will effect SUB 1 only. Begin your adjustments at low
volume. 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 them 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 protec-
tion.
Know your total ohm load before you make
any connections.
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