I love listening to music and usually fairly loud so as a result I only have 1 working factory speaker. I've been reading about which speakers to buy for a good overall sound. Just for some context this is for an older vehicle that's nearing the end of its life. I'm looking to buy a new vehicle and will keep this one as a work vehicle. Having said that I don't want to put a ton of money into a brand new sound system as 2 new speakers will work fine. I originally settled on the Rockford Fosgate P1683 until more research revealed they don't have great bass which is more important to me than the highs. Now I think I've decided on the Pioneer TS-A6880F which has a good overall sound and better bass. My questions are any opinion on the speakers and will they need an amp to get good sound. I replaced the factory head unit a few years ago with a Pioneer DEH-X3800UI. Sorry for the longer posts but I'm not very knowledgeable about car audio. Thanks in advance!