5 years ago I would agree with that $2.00 per watt figure, but not anymore. $1.00 per watt will get you a PPI amp. For a sub, you can get a class D amp that will cost you .25 cents per watt that are on the same level as PPI.
To answer the original question. If it is truly 300 watts, than yes. Actually, if it is even 100 watts it will be enough.
