I took out the Clarion radio that a PO had put in and replaced it with a new one from Antique Automotive Radio. When I turn up the volume the sound goes all buzzy and non-descript. I believe this is called speaker distortion, is that correct? Does it mean I need higher watt speakers. The current speakers are also Clarion, 40W, but I can't get much volume before the sound goes wonky. Any recommendations on what to replace them with. I am running a two speaker system in the kick panels, no amp or other goodies.