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15-EN
Recalling the Stored Equalizer Curve
(CDA-9815/CDA-9813 only)
1
Press EQ to select EQ mode.
2
Press and hold EQ for at least 2 seconds.
3
Press any one of the preset buttons (1 through
6) to activate your desired curve.
4
Press EQ to return to normal mode.
• EQ mode is automatically canceled if no operation is performed
within 15 seconds.
• This function is inoperable when DEFEAT is set to ON (page 13).
• If you do not adjust the factory settings of (FLAT/POPS/ROCK/
NEWS), the factory set display (FLAT/POPS/ROCK/NEWS) is
shown preferentially.
About the Crossover
(CDA-9815/CDA-9813 only)
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
20 Hz -
200 Hz
----
----
----
FLAT, -6,
-12, -18,
-24 dB/oct
FLAT, -6,
-12, -18,
-24 dB/oct
FLAT, -6,
-12, -18,
-24 dB/oct
----
----
0 to
−12 dB
0 to
−12 dB
0 to
−12 dB
Low range
speaker
Rear high
range
speaker
Front high
range
speaker
----
20 Hz -
200 Hz
20 Hz -
200 Hz
Cut-off frequency
(1/3 octave steps)
Slope
Level
HPF LPF HPF LPF
Low range
speaker
Mid range
speaker
High range
speaker
20 Hz -
200 Hz
20 Hz -
20 kHz
----
----
FLAT, -6,
-12, -18,
-24 dB/oct
-6, -12, -18,
-24 dB/oct
FLAT, -6,
-12, -18,
-24 dB/oct
FLAT, -6,
-12, -18,
-24 dB/oct
----
0 to
− 12 dB
0 to
−12 dB
0 to
−12 dB
----
20 Hz -
200 Hz
1 kHz -
20 kHz
Cut-off frequency
(1/3 octave steps)
Slope
Level
HPF LPF HPF LPF
3 way mode
Low range High range
(Different from actual display)
• 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.
Low range High rangeMid range
(Different from actual display)
Output frequency range
LPF cut-off
frequency
HPF cut-off
frequency
Level adjusting
(0 to - 12 dB)
Slope adjusting
20 Hz
(Different from actual display)
Slope FLAT