Rockford Fosgate X1 Manuel D'installation Et D'utilisation page 9

4. SUBSONIC – (Used to turn the subsonic filter on or off and adjust frequency)
SUBSONIC FILTER - ON or OFF {Default is OFF}
Setting this to "ON" engages a subsonic filter limiting the amount of low frequency information going
to the woofer with a -12dB/octave @ a variable 10 to 50Hz, adjustable in 1hz increments. This helps
prevent woofer damage due to over-excursion.
SUBSONIC FREQUENCY - 10-50 (setting in Hz) {Default is 50}
5. PUNCH EQ - (Setting the Bass and Treble output of the amplifier)
PUNCH BASS LEVEL - 0-18 (setting in dB) {Default is Ø}
PUNCH TREBLE LEVEL - 0-12 (setting in dB) {Default is Ø}
6. AUX OUTPUTS – (Setting the amplifier pass thru/auxiliary outputs)
NOTE: The frequency set in XOVER MODE is used here. This is not dependent on the mode that was set
in the XOVER MODE.
AUX OUT SELECT - ALL PASS, LOW PASS, HIGH PASS or DIRECT, {Default is ALL PASS}
Used to select the signal output of the Pass-Thru/Auxiliary Output RCA jacks between All Pass, High
Pass, Low Pass or Direct mode. In the High Pass or Low Pass mode, the frequency set in XOVER
MODE is used here. However, depending on the crossover set here, the Pass-Thru/Auxiliary Outputs
can be neutral (All Pass), the same or a *complimentary signal of the crossover type that was set in
XOVER MODE, or, set to DIRECT to allow the source signal to pass through without any processing
delay. All Pass or Direct routes the full bandwidth input signal to the auxiliary Pass-Thru RCA jacks.
All Pass routes a time-delayed replica of the input signal that is synchronized to the amplifier speaker
outputs. Direct routes the input signal with no time delay, and is useful for cascading multiple
amplifiers without incurring any cumulative signal delay.
NOTE: This feature is useful when separate amplifiers are used to drive the high and low frequency bands.
By setting the first (1st) amplifier to drive the low frequency, setting XOVER mode to Low Pass, and
selecting High Pass for the Pass-Thru/Auxiliary Output RCA jacks, the *complimentary signal will
be amplified by the second (2nd) amplifier.
*Complimentary Signal is a term used when the source signal is exactly split into two (2) separate
frequency bands, a high and low band, in such a way that the resultant high and low band signals can be
amplified separately to accurately reproduce the original signal. There is no loss or "notch" in the overall
frequency response due to the splitting. This type of processing optimizes reproduction of the original
source material and is only possible using linear phase DSP (digital signal processing).
7. XOVER MODE – (Crossover Settings)
XOVER MODE - ALL PASS, LOW PASS, HIGH PASS or DIRECT {Default is ALL PASS}
The crossover type can be adjusted between All Pass, Low Pass, High Pass or Direct mode. All Pass or
Direct routes the full bandwidth input signal to the speaker outputs. Direct routes the input signal with
no time delay to the speaker outputs.
NOTE: The frequency set here is also used for AUX OUTPUTS, no matter how the XOVER MODE was set.
XOVER FREQ (Frequency) - 50-350 (setting in Hz) {Default is 350}
Accessible only in LOW PASS and HIGH PASS modes. The crossover frequency can be adjusted
between 50-350Hz at a crossover slope of 48dB.
Example of making DSP adjustments.
This example will be showing an adjustment to the XOVER MODE.
1. Press the Select or (right) key to enter into the menu selections.
2. Use the (up) or (down) key to scroll
through the menu until "XOVER MODE"
shows on the screen.
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