Alpine DVA-9965 - Manual (Page 25)

23
-EN
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
(Different from actual display)
(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)
• 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.
• Use the recommended crossover frequencies of the speakers being
used for setting the crossover. Adjusting to a frequency outside that
recommended range might cause damage to the speakers.
For the recommended crossover frequencies of Alpine speakers,
refer to the respective Owner's Manual.
Alpine is not responsible for damage or malfunction of speakers
caused by improper crossover settings.
* 1 Only when selecting USER'S in “ Setting the Response Slope for
the High Range Speaker ” (page 37).
Low range High range Mid range
Slope FLAT
Low range High range
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
1 kHz -
20 kHz
----
----
FLAT, 6,
12, 18,
24 dB/oct
FLAT* 1
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