I know absolutly nothing about speakers. I know my stuff when it comes to subs and amps since i have 2 12 inch aq's and a mb quart amp. Anyways im looking to upgrade my door speakers. I want them to get louder to were you can hear the music over the bass and clear. I currently have a aftermarket HU also soif i just get new door speakers will the volume increase or would i have to add a amp to them? What can i expect to get with $150? What are some good yet cheap brands?