Rep Power: 193

i need a help on installing speakers in my car i can do the install and wireing but
do i need a amp for the new speakers and why would i if i need one
ive read the diy so thanks and i would like the help to come from Gearbox or any one but 02civicsi02 NO OFFENSE TO HIM BUT SOMETHING ABOUT HIS RESPONSES TICKS ME OFF BUT HE SEEMS LIKE A GREAT PERSON THOUGH

 
Rep Power: 512

Lol, ouch..

It kinda depends on the speakers you get. You don't really need one, but if you get speakers that have a higher power rating than the output of the headunit, then the speakers will be HELLA quiet. Back before I amp'd my front speakers (alpine type-r 6.5", 100W RMS with amplified Infinity Reference 6x9's in the back), I had to shift the F/R balance to pretty much 80-90% forward and have my volume at 75-85% just to get audible balanced sound out of my speakers. I'd recommend it if you want quality sound coming from speakers you spent money on.

 
Rep Power: 291

You do not require an amp

However, if you want those aftermarket speakers to reach full potential, you may want to consider an amp

Think of if this way, most aftermarket head units pump ~15RMS to speakers
Most aftermarket speakers are capable of handling ~50RMS+
(RMS is constant power, not peak power)

An amp would be able to deliver the speakers the amount of power needed to reach the speaker's full potential

All in all, your speakers will sound great without it, but if you want them to sound even better, install an amp