Quote Originally Posted by hugobo View Post
Sirs I just bought an AVT underseat slim sub, had it installed by a local auto shop. It sounded good naman po. Lately i think i need to adjust/tune the subwoofer for better sound quality but i do not have any idea how to adjust its phase and frequency and the HUD settings like the high and low pass filter. Meron ba dito parang template nalang to follow your figures/settings, i am
After sound quality lang po..(isuzu mux ls-a and the head unit they told us -avt din po. Thanks in advance..
Any chance you could bring it back to the car audio shop where you had it installed and let them adjust it for you? Wala kaseng one setting fits all po.

Anyway, you mentioned phase settings. Dalawa lang naman ang setting niyan, either 0(zero) or 180degrees. I suggest you play around with it. The correct setting will be the one that gives you the impression that the bass is coming out from the front dashboard. If you can not tell the difference or if the subs is installed at the front seat or front passenger seat then there's no need to adjust the phase since the subs is already located at the front.

Your active type subs already comes with a low pass filter. Meaning no need to set the active low pass filter on your HU (provided your HU has this feature).

With regards to the cut off frequency. I suggest you start with 200hz then slowly turn the knob down (to a lower frequency) until you hear that the subs together with the other speakers blends together nicely. Meaning neither the subs or other speakers stands out. There is a good chance that you will need to adjust the gain settings of your amplifier as well when you do this.

If you feel that it's quit complicated then I suggest bringing it the nearest car audio installer and have them adjust it for you.