door speakers

[expo5.0]

factory bass isn't "better" in that respect.

an no 5x7 or 6x9 sounds real decent below 80 hz or so regarless of the freq range.

 

[awd5.0]

so would speakers with a frequency of 30 - 28000k have more bass than the factory speakers? is it worth upgrading the speakers if I am not buying subs or a new reciever?

 

[OVERKILL700HP]

so would speakers with a frequency of 30 - 28000k have more bass than the factory speakers? is it worth upgrading the speakers if I am not buying subs or a new reciever?

Aftermarket speakers can make a night and day difference in sound as compared to a stock speaker, even on a stock HU.
Hopefully someone else will chime in with the frequency information, btw, google is your friend

 

[DeathsArrow]

Just something to keep in mind. Even though a speaker is listed to go to a certain range, it doesn't necessarily mean that it sounds good at that frequency.