About
the
Crossover
Crossover (X-OVER):
This unit
is
equipped with an active crossover. The crossover limits the
frequencies delivered
to
the outputs. Each channel is controlled
independently. Thus, each speaker pair can be driven by the frequencies
for which they have been optimally designed.
The crossover adjusts the HPF (high pass filter)
or
LPF (low pass filter)
of
each band, and also the slope (how fast the filter rolls off the highs or
lows).
Adjustments should be made according to the reproduction
characteristics
of
the speakers. Depending on the speakers, a passive
network may not be necessary. If you are unsure about this point,
consult your authorized Alpine dealer.
4.2ch (FRONTIREARISUBW.)
mode
Cut-off
frequency
Slope
(1/3 octave steps)
Level
HPF
LPF HPF
LPF
Low
range
20
Hz-
FLAT,6,
oto
speaker
-._-
200
Hz
----
12, 18,
-12
dB
24 dB/oct.
Rear
high
20
Hz-
FLAT,6,
Oto
range
200
Hz
----
12, 18, ----
-12
dB
speaker
24
dB/ocl.
Front high
20
Hz-
FLAT,6,
Oto
range
200
Hz
----
12, 18,
----
-12
dB
speaker
24
dB/ocl.
(Different from actual display)
2.2ch (3WAY)
mode
Cut-off frequency
Slope
(1/3 octave steps)
Level
HPF LPF HPF
LPF
Low
20
Hz-
FLAT,6,
oto
range
----
200 Hz
----
12, 18,
speaker
24 dB/ocl.
-12
dB
Midrange
20
Hz-
20
Hz-
FLAT,6, FLAT,6,
Oto
12,18,
12, 18,
speaker
200
Hz
20 kHz
24 dB/ocl. 24
dB/ocl.
-12
dB
1
kHz-
FLAT*
High
20
kHz,
oto
range
(20
Hz-
----
6,12,18,
----
-12
dB
speaker
20
kHz)*
24 dB/ocl.
* Only when selecting USER'S in "Setting the Response Slope
for
the
High Range Speaker (TW SETUP)" (page 28).
(Different from actual display)
Level
adjusting
(0 to -12 dB)
Output
frequency range
I •
..
I
I I
I
--
----t-1\~
-~I:::-~~jUS~:::
FLAT
I I
I
I
I
20 Hz I : (Different from actual display)
HPF
cut-off
LPF cut-off
frequency frequency
o HPF (high passjilter): Cuts the lowerfrequencies and allows the
higherfrequencies
to pass.
o
LPF
(low passjilter): Cuts the higherfrequencies
and
allows the
lowerfrequencies
to
pass.
o Slope: The level change (in
dB)for
afrequency change
of
one octave.
o The higher the slope value, the steeper the slape becomes.
o Adjust the slope to FLAT to bypass the HP
or
LPjilters.
o Do not use a tweeter without the HPF on
or
set to a low frequency, as
it may cause damage to the speaker due to the low frequency content.
o
You
cannot adjust the crossoverfrequency higher than the HPF
or
lower than the
LPF.
o Adjustment should be made according to the recommended crossover
frequency
of
the connected speakers. Determine the recommended
crossoverfrequency
of
the speakers. Adjusting
to
a frequency range
outside that recommended
may
cause damage
to
the speakers.
For
the recommended crossoverfrequencies
of
Alpine speakers, refer
to
the respective Owner's Manual.
We
are not responsible
for
damage
or
malfunction
of
speakers caused
by using the crossover outside the recommended value.
33-EN
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