Setting The Crossover Settings (X-Over) - Alpine INE-W970A Owner's Manual

Setting the Crossover Settings (X-Over)

■ About the 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.
Cut-off
frequency (1/3
octave steps)
HPF LPF
Subwoofer 20 Hz -
----
(LPF) 200 Hz
Rear speaker 20 Hz -
----
(HPF) 200 Hz
Front speaker 20 Hz -
----
(HPF) 200 Hz
Low range
Slope adjusting
Output frequency
range
Subwoofer
Slope
FLAT
Level
adjusting
(0 to –12
dB)
20 Hz
(Different from
LPF cut-off
actual display)
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.
66
-EN
Slope
Level
HPF LPF
0, 6, 12, 18, 0 to
----
24 dB/oct. –12 dB
0, 6, 12, 18, 0 to
----
24 dB/oct. –12 dB
0, 6, 12, 18, 0 to
----
24 dB/oct. –12 dB
High range
Output frequency
range
Rear speaker
Front speaker
200 Hz
HPF cut-off
frequency
• 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.
1. In the Setup screen, touch [X-Over].
2. Touch [Channel] to select the channel.
Each time you touch, the channel switches.
• The channel being adjusted is displayed in red.
Front HPF → Rear HPF → Subw. LPF → Front HPF
3. Adjust the crossover to your preference.
Selecting the Cut-Off Frequency
Touch or of "Frequency," and then select the cut-off
frequency. (20 / 25 / 31.5 / 40 / 50 / 63 / 80 (Initial setting) / 100 / 125
/ 160 / 200)
Adjusting the Slope
Touch or of "Slope," and then adjust the HPF or LPF slope.
(0 (Initial setting) / 6 / 12 / 18 / 24 dB/oct.)
Adjusting the Level
Touch or of "Level," and then adjust the HPF or LPF level.
(-12 to 0 dB (Initial setting: 0))
4. Repeat steps 1 to 2 to make adjustment to the other
channels.
5. To store the adjusted setting value, touch and hold [Preset 1],
[Preset 2], or [Preset 3] for at least 2 seconds.
• Touch [Flat] to initialise all values.
• If the Subwoofer setting is "Off," the Subwoofer setting cannot be
edited.
• While adjusting the X-OVER you should consider the frequency
response of the connected speakers.
Calling the X-OVER adjusted value
Calling the pre-set X-OVER adjusted value.
Touch [Preset 1], [Preset 2], or [Preset 3] on the X-OVER
screen.
The setting stored in the Preset will be recalled.