Alpine SPR-172B Car Speaker

Pros: Sound quality, Great bass, compact, build, brand, price
Cons: not recommended to put in front.

Alpine have always been a very good brand for car audios, it also provides a range of quality products suitable for every car enthusiast.

Recently, I have decided to upgrade my sound system in the car by adding more bass to my factory standard...

Pros: maybe it's my end (none yet)
Cons: maybe it's my end (no "great sound" nor "great bass"?)

I read I read reviews here on these Alpine speakers (especially Alpine SPR-172B) and loved them since they said it's "great sound quality" and "great bass" even without an amp or sub, therefore I bought the Alpine SPR-172B; however, somehow I did not get...