USING SDX4.1
6
The SDX4.1 crossover aims to divide and direct the musical
signal according to each audio frequency range, sending this
signal to the amplifiers and consequently to the loudspeakers.
The correct frequency division guarantees the sound system a
higher performance, since each type of loudspeaker works at
different frequency ranges, in wich they perform best. In
addition, the loudspeaker, by working only with suitable
frequencies, gets the most protection avoiding accidental
damage. When in doubt about the appropriate frequency cuts,
always consult the loudspeaker manufacturer.
The SDX4.1 has two audio inputs called Front In and Low
/Rear In. The Front In input is responsible for receiving audio
signal and sending it to the Flat, Mid Low, Mid High, and High
outputs. The Front In signal can also be directed to the Low
channel through the switch key located just above the Low
/Rear input; the Low /Rear input is used exclusively to send
audio to the Low output. This input can be connected to the
Rear or Sub outputs of the car radio if it is available in the
device used. Connection to the Low /Rear input is not
mandatory, and the Low output may also receive audio
through the Front In. The Front /Rear switch is responsible for
this switching.
In the Front In, we also have 2 (two) adjustment switch keys, a
mono /stereo switch key and another Phase switch key. The
mono /stereo switch key is used to mix (add) the input
channels L and R into a mono signal that is sent to the outputs.
In the stereo position, the stereo channels L and R are
separated from the output channels. The Phase switch effects
a 180° phase rotation on the audio signal from the Front In
input, sending the Mid Low, Mid High and High outputs. This
rotation is important in cases where you have another sound
system connected to the Flat output of the SDX4.1.
By performing the phase rotation 0/180º we can avoid phase
cancellations from one system to the other, having an add
effect of the sound pressure. This feature is useful when you
are linking multiple vehicles to play the same musical program.
