Quote Originally Posted by tutituts24 View Post
Hello mga sir. Gusto ko sana magupgrade ng sound system. I have 2014/2015 toyota avanza. All stock. Is it possible to stick with my HU then upgrade sa mga speakers? Gusto ko kasi ung tamang boom boom lang pero di siya matakaw sa space. If need talaga magpalit ng HU, what would you recommend? Any shop na okay mag quote ng upgrades? TIA.
Yes you can use the original Hu then upgrade/add aftermarket speakers and amplifiers. Only upgrade your HU if you there's a additional feature you want that your current HU does not offer. There are a lot of aftermarket HUs to choose from, I suggest to understand first the features offered before getting one.

If you're already decided on getting a subs, measure first the space you are willing to sacrifice to know what kind of subwoofer that would work for you.