Distortion !PLEASE HELP!!


2005-08-04 7:55 am

I have 2x Kenwood KFC W3009 subs in a 113L (4 Cubic Feet) box with 2x Ports, 10.5cm by 28cm in size.
I am running them with a Blaster Monoblock 1200w, 400w rms @ 2ohm amp.

The bass sounds distorted and mixed up at 80% front loader volume. Under this volume the bass is good but soft.

Can you please tell me if I need to get more powerful amp or if my box is the wrong size?