no, they aren't going to produce much bass. they are strictly designed for midrange/treble. add a powered sub to the system to add bass response. also check to see if the Alero's OEM speakers are 4 ohms and unamplified. GM liked to use 10 ohm speakers in some cars, 8 ohm in others. If that is one of them, your Infinity speakers may not work well at all on the factory head unit.