About Time Correction - Alfa Romeo 4C Alpine Radio 2018 Manual

48 SOUND SETTING
Adjusting BASS ENGINE SQ Level
With BASS ENGINE SQ ON, adjusting the Bass Level
uniformly effects various sound parameters for optimum
Bass effect.
1. Press BASS to display the BASS ENGINE SQ Level
adjustment screen.
The unit's back lighting changes to white amber
during this period.
2. Turn the Rotary encoder to select the desired level (+0
- +6).
The initial level is +3.
NOTE:
• Adjustable only when DEFEAT is OFF.
• Adjustable when 2WAY/3WAY system mode is set to
2WAY.
• The Bass parameters affected contain EQ PRESETS,
9 BAND EQ, SUBWOOFER (when set this item via
TuneIt App), X-OVER, SUBW SYS and MX SETTING.
These items are set automatically in BASS ENGINE SQ
mode and cannot be adjusted separately.
• From Level 0 to Level 6, the effect of BASS ENGINE SQ
Enhance increases level by level.
About Setup when the external power amplifier is
connected.
In order to optimize the BASS ENGINE SQ, we recom-
mend the following power amplifier setup.
After setting up, you can adjust the BASS ENGINE SQ
Level according to the music.
1. Set gain of the power amplifier to "MIN".
2. Set the Crossover Mode Sector switch to "OFF".
3. Set the BASS ENGINE SQ of this unit to "ON", and the
BASS ENGINE SQ Level to "+3".
4. Play a song of the genre you frequently listen to, and
adjust gain of the power amplifier.

About Time Correction

The distance between the listener and the speakers in a
car vary widely due to the complex speaker placement.
This difference in the distances from the speakers to the
listener creates a shift in the sounds image and frequency
characteristics. This is caused by the time delay between
the sound reaching the listener's right versus the left ear.