So I recently upgraded my subwoofers in my car, but now the bass drowns out the mids and the highs. I have already spent my entire budget on the subs, so I cannot affor the absolute best. I just need something that can keep up with 2 15" Obsidians and a PPI BK1300.1D amp. First off I do not know what size the speakers in my car are (2000 Ford Taurus SES). And when it comes to indoor speakers I don't know much about brands or anything...where should I start?