Share ko lang po po (how to improve the sound reproduction of the stock 2010 Strada GLX audio system):

1) Turn off loudness and defeat.
2) Turn on HPF (high pass filter) and set to 100Hz.
3) Set bass center frequency to 200Hz and increase to +3 with 4 width (widest parametric eq setting).
4) Set treble center frequency to 10KHz and increase to +3.

I observed the sound reproduction to have more body and bite with some frequency extension (airness) and crisp even without tweeters (6.5inch dual-cone speakers lang ang stock sa doors). Midbass hits with some RnB and Hiphop tracks are punchy and without distortion even at volume 9.