Setting The Bass Control; Setting The Treble Control; Adjusting The Built In Crossover - Alpine CDA-7977 Owner's Manual

Setting the Bass Control

You can change the Bass Frequency emphasis to
create your own tonal preference.
1
Press the CENTER f button to select the BASS
(bass Center frequency) control mode.
→ BASS → TREBLE → OFF
2-1
Setting the bass Center frequency:
Press the g DN or f UP button to select
the desired bass center frequency.
→ 60Hz ↔ 70Hz ↔ 80Hz ↔ 90Hz ←
→ 180Hz ↔ 150Hz ↔ 130Hz ↔ 100Hz←
Emphasizes the displayed Bass frequency ranges.
2-2
Setting the bass Band Width (Q-Factor):
Press the BAND button to select the desired
bass Band Width.
→ B. Width1 → B. Width2 → B. Width3 → B. Width4
(Wide) ← ..................................... → (Narrow)
Changes the bass boost band width to wide or
narrow. A wide setting will boost a wide range of
frequencies above and below the center
frequency. A narrower setting will boost only
frequencies near the center frequency.
2-3
Setting the bass Level:
Rotate the Audio Control knob to select the
desired bass Level (–7~+7).
You can emphasize or weaken the bass
frequency.
NOTES
• If no buttons are pressed within 5 seconds, the Bass
control setting will be turned off automatically.
• The settings of the Bass and Treble will be individually
memorized for each source (FM, AM, XM and CD) until
the setting is changed. Depending on the connected
devices, some functions and display indications do not
work.

Setting the Treble Control

You can change the Treble Frequency emphasis
to create your own tonal preference.
1
Press the CENTER f button to select the
TREBLE (treble Center frequency) control mode.
→ BASS → TREBLE → OFF
2-1
Setting the treble Center frequency:
Press g DN or f UP button to select the
desired treble Center frequency.
→ 10kHz ↔ 12.5kHz ↔ 15kHz ↔ 17.5kHz ←
Emphasizes the displayed Treble frequency
ranges.
2-2
Setting the treble Level:
Rotate the Audio Control knob to select the
desired Treble Level (–7~+7).
You can emphasize the treble frequency.
NOTES
• If no buttons are pressed within 5 seconds, the Treble
control setting will be turned off automatically.
• The settings of the Bass and Treble will be individually
memorized for each source (FM, AM, XM and CD) until
the setting is changed. Depending on the connected
devices, some functions and display indications do not
work.
Adjusting the built-in Crossover
You can change High Pass Filter and Low Pass
Filter on this unit, so that you can create your
favorite sound effects.
1
Press the X-OVER button repeatedly to select
the desired parameter.
→ HPF
∗ When the subwoofer is turned OFF by using
this unit, LPF and phase are deactivated.
2
Press the g DN or f UP button to select
the desired setting.
1. HPF (Setting the High Pass Filter):
OFF ↔ 80Hz ↔ 120Hz ↔160Hz
Outputs all frequencies higher than that selected
according to your preference.
2. LPF(Setting the Low Pass Filter):
OFF ↔ 80Hz ↔ 120Hz ↔160Hz
Outputs all frequencies lower than that selected
according to your preference.
(Only available when using the subwoofer output
from this unit.)
NOTES
• If the battery is disconnected, all settings return to
factory default.
• If no buttons are pressed within 5 seconds, the setup
menu returns to the normal audio display.
→ LPF∗ → OFF
9
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