Hey guys I am new to this site and I need help picking out a new sub. I currently have a alpine type r 15 and looking to get a new sub. I had a kicker zx500.1 on it but I just recently bought a Rockford T1000-1bdcp. I was looking at the Fi SSD 15 or the SSA Icon 15? Which Sub would sound better?hit harder? The sub would go in a 3.75ft box Net, tuned to 35hz.