Alpine Multimedia Manager PXA-H900 Owner's Manual download pdf (Page 21)

17-EN

Adjust the volume.

• When using RCA-type connections, use the

PXA-H900’s VOL

and VOL buttons to

display “5” (on the PXA-H900’s display).

• When using Ai-NET connections, perform the

head unit’s volume operation to display “5” (on

the head unit’s display).

When the CDA-7990 is combined as a head

unit, adjust to “–50dB”.

Press the AUTO AEQ button.

Press the or button to select the channel or

speaker environment for outputting the correction

signals.

• The Adaptive Equalizer flattens

the overall bass response, both

the SPL and the phase. Depend-

ing on how noisy your vehicle is,

a flat SPL response may cause

low bass notes to be masked by

road noise. In such cases, use the

conventional EQ features of the

PXA-H900 to gently “tilt up” the

low bass response. Again, listen

for a few weeks to allow your

ears and brain to recalibrate and

become used to the flat sound.

• After the automatic adjustments

are performed, the sound from

the different speakers arrives at

the listening position at virtually

the same time. If you are

accustomed to delays in the bass

sound (which is common with

conventional systems), the sound

may seem somewhat strange to

you. If so, increase the

subwoofer delay time slightly to

achieve sound closer to that of

home audio systems.

• Heavy bass speakers do not

reproduce medium low

frequencies (150 to 400 Hz) well

(the sound tends to be distorted).

When using such speakers, lower

the subwoofer’s cutoff frequency.

• If the volume of the subwoofer is

too low after the automatic

adjustment procedure is

performed, the adjustments have

not been performed properly.

Refer to step 2 under “Prepara-

tions for automatic adjustments”

and perform the adjustments

again.

• Depending on the speaker

settings (on or off), certain

speakers may not be displayed

(in which case they cannot be

set).

FRONT.ON SubWf. ON FRONT.ON SubWf. OFF FRONT.OFF SubWf. ON

AADAPTIVEEQUTO

F.ONS

WON.RONT

PENTER]TOSTARTUSH [

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Alpine Multimedia Manager PXA-H900 Owner's Manual Page 21

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