I have a planet audio tq1601d amp and i was looking at its specs , it shows low frequency response 50hz , high at 150hz. Does that mean the amp wont produce sound below 50hz? I am new to this and I would like to learn more about this. Right now its hooked up to my powerbass 3xl 122d in a 43hz box . I was going to get a custom 33hz box for the sub soon, will that help with hitting the lows or is my amp rubbish and wont hit them?