About The Crossover - Alpine CDA-9886 Quick Reference Manual

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 tilter) or LPF (low pass tilter)
of each band. and also the slope (how fast the tilter 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 (FRONT/REARISUBW.) mode
Cut-off frequency
Slope
(1/3 octave steps)
Level
HPF LPF HPF LPF
Low range
20 Hz-
FLAT,6,
o
to
speaker
----
200 Hz
----
12, 18,
-12 dB
24 dB/oct.
Rear high
20 Hz-
FLAT, 6.
o
to
range
200 Hz
._--
12,18, ----
-12 dB
speaker
24 dB/oct.
Front high
20 Hz-
FLAT,6,
o
to
range
200 Hz
----
12,18,
----
-12 dB
speaker
24 dB/oct.
Low range High range
X
(Different from actual display)
2.2ch (3WAY) mode
Cut-off frequency
Slope
(113 octave steps)
Level
HPF LPF HPF LPF
Low
20 Hz-
FLAT, 6,
o
to
range
----
200 Hz
----
12,18,
-12 dB
speaker
24 dB/oct.
Midrange 20 Hz- 20 Hz-
FLAT, 6, FLAT,6,
Oto
12,18, 12,18,
speaker
200 Hz 20 kHz
24 dB/oct 24 dB/oct.
-12 dB
1 kHz-
FLAT *
High
20 kHz, Oto
range
(20 Hz-
----
6,12,18,
----
-12 dB
speaker
20 kHz)*
24 dB/oct
*
Only when
.~electing
User's in "Setting the Response Slope}()r the
High Range Speaker (TW SETUP)" (page 27).
(Different from actual display)
32-EN
Level adjusting
(0 to -12 dB) Output frequency range
\
~..
-:
n\j.'n)
---:r-i'<-?-:;----·---~-~o--p--e--~-~-jU-S~-:-::-FLAT
I I
I I
I I
-_.._- ----.-0r--.-------l..---.--..- - - - - - - -
20 Hz : (Different from actual display)
HPF cut-off LPF cut-off
frequency frequency
o
HPF (high pass filter): Cuts the lower frequencies and allows the
higher frequencies
to
pass.
o
LPF (low pass filter): Cuts the higherfrequencies and allows the
lower frequencies
to
pass.
o
Slope: The level change (in dB)forafrequency change of one octave.
o
The higher the slope value. the steeper the slope becomes.
o
Adjust the slope to FLAT to bypass the HP or LP filters.
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 crossover frequency higher than the HPF or
lower than the LPF.
o
Adjustmellt should be made according
to
the recommended crossover
frequency ofthe connected speakers. Detemtine the recommended
crossover ji-equency of the speakers. Adjusting to it frequency range
outside that recommended may cause damage to the speakers.
For the recommended crossover frequencies ofAlpine speakers, refer
to
the respective Owner's Manual.
We are not responsible for damage or malfunction ofspeakers caused
by using the crossover outside the recommended value.
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 tilter) or LPF (low pass tilter)
of each band. and also the slope (how fast the tilter 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 (FRONT/REARISUBW.) mode
Cut-off frequency
Slope
(1/3 octave steps)
Level
HPF LPF HPF LPF
Low range
20 Hz-
FLAT,6,
o
to
speaker
----
200 Hz
----
12, 18,
-12 dB
24 dB/oct.
Rear high
20 Hz-
FLAT, 6.
o
to
range
200 Hz
._--
12,18, ----
-12 dB
speaker
24 dB/oct.
Front high
20 Hz-
FLAT,6,
o
to
range
200 Hz
----
12,18,
----
-12 dB
speaker
24 dB/oct.
Low range High range
X
(Different from actual display)
2.2ch (3WAY) mode
Cut-off frequency
Slope
(113 octave steps)
Level
HPF LPF HPF LPF
Low
20 Hz-
FLAT, 6,
o
to
range
----
200 Hz
----
12,18,
-12 dB
speaker
24 dB/oct.
Midrange 20 Hz- 20 Hz-
FLAT, 6, FLAT,6,
Oto
12,18, 12,18,
speaker
200 Hz 20 kHz
24 dB/oct 24 dB/oct.
-12 dB
1 kHz-
FLAT *
High
20 kHz, Oto
range
(20 Hz-
----
6,12,18,
----
-12 dB
speaker
20 kHz)*
24 dB/oct
*
Only when
.~electing
User's in "Setting the Response Slope}()r the
High Range Speaker (TW SETUP)" (page 27).
(Different from actual display)
32-EN
Level adjusting
(0 to -12 dB) Output frequency range
\
~..
-:
n\j.'n)
---:r-i'<-?-:;----·---~-~o--p--e--~-~-jU-S~-:-::-FLAT
I I
I I
I I
-_.._- ----.-0r--.-------l..---.--..- - - - - - - -
20 Hz : (Different from actual display)
HPF cut-off LPF cut-off
frequency frequency
o
HPF (high pass filter): Cuts the lower frequencies and allows the
higherjrequencies
to
pass.
o
LPF (low pass filter): Cuts the higherfrequencies and allows the
lower frequencies
to
pass.
o
Slope: The level change (in dB)forafrequency change of one octave.
o
The higher the slope value. the steeper the slope becomes.
o
Adjust the slope to FLAT to bypass the HP or LP filters.
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 crossover frequency higher than the HPF or
lower than the LPF.
o
Adjustmellt should be made according
to
the recommended crossover
frequency ofthe connected speakers. Detemtine the recommended
crossover ji-equency of the speakers. Adjusting to it frequency range
outside that recommended may cause damage to the speakers.
For the recommended crossover frequencies ofAlpine speakers, refer
to
the respective Owner's Manual.
We are not responsible for damage or malfunction ojspeakers caused
by using the crossover outside the recommended value.