The Head unit is stock. The amplifier has frequency and level settings apart from xcover and bass boost. If i turn on the bass boost the speakers just start crackling.....
Bass = +2
Treble = 0
FADER = 0 (if having 4 speakers, otherwise F9 or maximum forward setting)
BALANCE = 0
EQUALISER = OFF
On your mobile, set settings to Auto or FLAT (Bass boost, treble/clarity/3D OFF) if playing from your mobile phone. If using USB, no issues.
On the amplifier, try this out in sequence.
HPF = 100 Hz
LPF = 60 Hz (if want tighter bass, decrease this and vice versa)
BASS/TREBLE BOOST = OFF
GAIN/LEVEL = Set HU to 75% volume, increase the level till the speakers start cracking, decrease a bit (if you listen to one particular volume, say 14, set it accordingly till you find output is good enough for the volume)
MODE = 4Ch (if using all 4 channels, else 2CH)
LPF/HPF/FLAT = If there is any such setting, move it to FLAT
If you still find anything missing, pump up the BASS setting on the HU.
Hope this works. Do revert back.
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