I bought a new Acoustic Audio PSW-12 12 inch 250 watt RMS and 500 watt Max ported home theatre subwoofer. I have noticed that the driver hasnt been moving alot of air and even has statred to bottom out because it isnt a high excursion driver. It also has been making a noise which i think is the voice coil scratching against something. This Driver really sucks, in my opinion. I'm thinking of taking the weak driver out and replacing it with a Visonik V120S4 12 inch 4 ohm high excursion driver which has an Xmax of 16 mm. The sub is rated for 300 Watts RMS and 600 Watts Max, a little bit higher than the rating on my plate amp which is a 500 watt amp. Is replacing this crappy driver a good idea?