Hi, My name is Damon. i'm 22, drive a 88 rx7 (weekend) and a 05' mazda6 as my daily. I'm here to learn about putting some decent speakers for my rx7.
Welcome to the forums Damon. a little advice, if you want to add decent speakers i would advise you to also add an amp.
Well i would advise you to install a component system up front, in your doors if the car has door speakers. A component system is the midbass and the tweeter seperated by a crossover, which sends the right frequenciy to each driver. Get a decent two channel amplifier to run these and if your looking for subwoofers/sub amps, there are many options. As far as well trusted companies, Jl Audio, Boston Acoustics, and Polk Audio make great component systems.