Recalling The Stored Equalizer Curve; About The Crossover - Alpine CDA-9855 Manual De Operación

Recalling the Stored Equalizer Curve

1
Press and hold MENU for at least 2 seconds.
2
Select the EQ mode by sliding your finger on the
GlideTouch bar to the left or right.
Press the GlideTouch bar under the EQ mode.
3
Press FUNC. or the GlideTouch bar to activate
the preset mode.
4
Select any one of the preset numbers (1 through 6)
by sliding your finger on the GlideTouch bar to
the left or right. Press the GlideTouch bar under
the desire preset to recall the stored contents.
5
Press and hold MENU for at least 2 seconds to
return to normal mode.
• This function is inoperable when DEFEAT is set to ON (page 15).
• You can recall the adjusted equalizer curve from "Equalizer
Presets" (page 15).
• If MENU is pressed while adjusting or setting the itmes in the
MENU mode, the unit will return to the previous selection secreen.
• By pressing the GlideTouch bar under RETURN in the MENU
mode, the unit will return to the normal mode.
• If no peration is performed in 60 seconds, the unit will return to the
normal mode.

About the Crossover

Crossover:
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, please consult your authorized Alpine dealer.
2 way mode
Cut-off frequency
(1/3 octave steps)
HPF LPF
Low range 20 Hz -
----
speaker 200 Hz
Rear high
20 Hz -
range ----
200 Hz
speaker
Front high
20 Hz -
range ----
200 Hz
speaker
Low range
(Different from actual display)
Slope
Level
HPF LPF
FLAT, 6,
0 to
----
12, 18,
−12 dB
24 dB/oct
FLAT, 6,
0 to
----
12, 18,
−12 dB
24 dB/oct
FLAT, 6,
0 to
----
12, 18,
−12 dB
24 dB/oct
High range
3 way mode
Cut-off frequency
(1/3 octave steps)
HPF LPF
Low range 20 Hz -
----
speaker 200 Hz
Mid range 20 Hz - 20 Hz -
speaker 200 Hz 20 kHz
1 kHz -
High range
----
20 kHz
speaker
1
* Only when selecting USER'S in
for the High Range Speaker (TW SETUP)
Low range Mid range
(Different from actual display)
Level adjusting
(0 to - 12 dB)
Output frequency range
20 Hz
HPF cut-off LPF cut-off
frequency frequency
• HPF (high pass filter): Cuts the lower frequencies and allows the
higher frequencies to pass.
• LPF (low pass filter): Cuts the higher frequencies and allows the
lower frequencies to pass.
• Slope: The level change (in dB) for a frequency change of one
octave.
• The higher the slope value, the steeper the slope becomes.
• Adjust the slope to FLAT to bypass the HP or LP filters.
• 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.
• You cannot adjust the crossover frequency higher than the HPF or
lower than the LPF.
• Adjustment should be made according to the recommended
crossover frequency of the connected speakers. Determine the
recommended crossover frequency of the speakers. Adjusting to a
frequency range outside that recommended may cause damage to
the speakers.
For the recommended crossover frequencies 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.
Slope
Level
HPF LPF
FLAT, 6,
0 to
----
12, 18,
− 12 dB
24 dB/oct
FLAT, 6, FLAT, 6,
0 to
12, 18, 12, 18,
−12 dB
24 dB/oct 24 dB/oct
FLAT* 1
0 to
----
6, 12, 18,
−12 dB
24 dB/oct
" Setting the Response Slope
"
(page 29).
High range
Slope FLAT
Slope adjusting
(Different from actual display)
17
-EN