It's getting distorted because the amplifier is getting overworked. It could be you jamming it to hard/loud, or it could be Sony's engineering to attempt to get more power out of the same power supply they were using back when it was 30x4. Get an amp and you'll be 20times better! I think a 5 channel is a good idea cuz then the 10" would pick up all the bass you've been missing out on. That's my thought. :beer: