Alpine i407-WRA-JL Owners Manual English - Page 28

Rear Speaker Setting, Defeat Setting, About the Crossover, Touch, Off or, On of Rear, Speaker.

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Page 28 highlights

Rear Speaker Setting You can set the rear speaker output to Off. Setting item: Rear Speaker Touch [ ] (Off) or [ Speaker". ] (On) of "Rear Defeat Setting If Defeat is On, the Equalizer setting are turned Off. This disables any settings made for these functions. Setting item: Defeat Touch [ ] (Off) or [ ] (On) of "Defeat". 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 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. Subwoofer (LPF) Rear speaker (HPF) Front speaker (HPF) Cut-off frequency (1/3 octave steps) HPF LPF ---- 20 Hz 200 Hz 20 Hz 200 Hz ---- 20 Hz 200 Hz ---- Slope Level HPF LPF ---- 0, 6, 12, 18, 24 dB/oct. 0 to -12 dB 0, 6, 12, 18, 24 dB/oct. ---- 0 to -12 dB 0, 6, 12, 18, 24 dB/oct. ---- 0 to -12 dB Low range High range Slope adjusting Output frequency range Slope Subwoofer FLAT Level adjusting (0 to - 12 dB) Output frequency range Rear speaker Front speaker 20 Hz (Different from actual display) HPF cut-off frequency LPF cut-off frequency 200 Hz • 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. 28-EN

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28
-EN
Rear Speaker Setting
You can set the rear speaker output to Off.
Setting item:
Rear Speaker
Touch [
] (Off) or [
] (On) of “Rear
Speaker”.
Defeat Setting
If Defeat is On, the Equalizer setting are turned Off. This
disables any settings made for these functions.
Setting item:
Defeat
Touch [
] (Off) or [
] (On) of “Defeat”.
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 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)
Slope
Level
HPF
LPF
HPF
LPF
Subwoofer
(LPF)
----
20 Hz -
200 Hz
----
0, 6, 12,
18, 24
dB/oct.
0 to
–12 dB
Rear speaker
(HPF)
20 Hz -
200 Hz
----
0, 6, 12,
18, 24
dB/oct.
----
0 to
–12 dB
Front
speaker
(HPF)
20 Hz -
200 Hz
----
0, 6, 12,
18, 24
dB/oct.
----
0 to
–12 dB
Slope adjusting
Output frequency
range
Front speaker
Rear speaker
Low range
High range
Subwoofer
200 Hz
Output frequency
range
LPF cut-off
frequency
HPF cut-off
frequency
20 Hz
(Different from actual
display)
Level adjusting
(0 to –
12 dB)
Slope
FLAT
•
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.