Hi I'm thinking about choosing Dayton TIT400C-4 15" Titanic Mk III Subwoofer 4 Ohm for a subwoofer design that i am building. It takes an estimated 800 watts RMS/1,100 watts max and i am going to be powering it with a Dayton HPSA500 500W Subwoofer Amplifier or a Bash 500W Digital Subwoofer Amplifier. Should I be worried that I will be under powering it? If so I will go for the Dayton RSS390HF-4 15" Reference HF Subwoofer 4 Ohm. So what do you say?