are they all powered off an amp or just hu

 

My Eclipse's run of an amp but they are very efficient and sound fine running off the stock deck. My front speakers are a Diamond Audio component set and have to run off an amp to sound good.

 

i have some inifinity kappas 6x9's in the rear and the magnet and cage part of the back of the speaker was too larger for the whole where the stock 6x9's were in my 93 accord(don't know about yours) but i ended up having to buy box4es to put them in which sit on the rear support under the rear windshield