Crossover Network - Alpine Multimedia Manager PXA-H900 Owner's Manual

Settings/Adjustments

Crossover network

The PXA-H900 is equipped with an active dividing network allowing the bands to be split before
amplification by the power amplifier.
Because of this, there is no need for a passive network between the speakers and amplifiers and the
amplifiers are fully independent, thus eliminating the problem of interference and making it possible to
achieve the optimum acoustic space by dividing the playback frequencies in a way suited to the capacities
of the speakers.
This adjustment requires sufficient knowledge and experience. If you have problems, so we suggest you
have the adjustment made by your store of purchase.
Adjust the high pass filter (H.P.F.) and low pass filter (L.P.F.) and set the slope (filter
response attenuation slope) for the different bands.
Make the adjustments according to the playable frequency ranges and frequency
responses of the connected speakers.
FLOW
(Front low range speaker)
FMID
(Front mid range speaker)
FHIGH
(Front high range speaker)
REAR
(Rear speaker)
CENTER
(Center speaker)
Sub Wf.
(Subwoofer)
30
-
EN
Cutoff frequency
adjustment range
(1/6 octave steps)
H.P.F. L.P.F.
20Hz – 22.5Hz –
18kHz 20kHz
20Hz – 22.5Hz –
18kHz 20kHz
1kHz – 1.1kHz –
18kHz 20kHz
20Hz – 22.5Hz –
18kHz 20kHz
20Hz – 22.5Hz –
18kHz 20kHz
20Hz –
22.5Hz –
180Hz
200Hz
Slope adjustment
H.P.F.
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB/
Filter OFF
L.P.F.
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB/
Filter OFF
-6/-12/-18/-24/-30dB