I need advice on a Singe 12' and a Mono Block Amp. I currently have a 12' Pioneer from Walmart and a handy me down 800 Watt 2- Channel cheapish Amp. The 12' I currently have is in a sealed box.

For my next set up I am making a T-Line box and I want to buy a more powerful sub. And a better quality Amp.

 

I changed all of my interior speakers with Pioneer speakers with built in tweeters
-2 6x9 in
-2 6 in
-2 tweeters
I also have a JVC Arsenal Single Din head unit