are tweeters worth it?
 

who has tweeters and are they worth the trouble?

yes they are worth it especially if you go with components but even if you don't they deliver a very clean crisp high

definitely worth the trouble
my highs used to be overpowered by my mids, so i bought and installed 2" Pyramid tweeters/crossovers and now my highs are nice and clear, while keeping my clear mids.

is it possible for my alpine headunit to have crossovers already built in or do i have to buy them separately?

usually the tweeters will come with the crossovers

if you don't already have new front speakers, or don't really like the ones you have, I would just buy a nice set of component speakers.

my front speakers are stock.
do i still need tweeters with component speakers?
cuz right now when i blast music, certain notes gets very high and it hurts my ears.
especially with rock music.

what level should my trebel be?
should defeat be on or off?
and does anyone use BBE with their alpine headunits?

and the tweeters that a friend gave me dont have crossovers says another friend.

just buy a component set then

and do i have to add tweeters if i get components? do i need to buy a cross over?

is it okay if i dont hook up an amp to it?
i already have an amp but its hooked up to a sub but 90% of the time its off.

i dont have an amp to my Pioneer tweeters and they sound amazing. They A LOT bigger difference in sound quality than you first think. Get new ones ASAP

components are tweeters and a speaker in one set http://www.alpine-usa.com/images/pro.../spx-17ref.jpg
^any good set components come with crossovers
yup just fine
probably wouldn't work for components anyhow