Does anyone here have some good tips for an audio system in the rx8? i am a man who loves his music and knows a lot of acoustics, but has absolutely no idea about speakers and woofers.

i want a woofer right behind the center of the 2 back seats so i can easily cover and uncover them while having good sound that isnt muffled. i also want a solid speaker system. i hear all these things about treble and mid but i dont know if those individual types of speakers are worth it. i really want to stay in the 100-300$ range for the setup, but might go to 400 but even thats a slim chance.

can anyone help? thanks