Here is my 1st try at a diy sub. There is so much good info out here it really helped alot. I also got a lot of help from Pat at Blue Print drivers. This was made with 12" sonotube and a 10" BPD 1001. I used the old 75w plate amp from my old sub and was worried that it wouldnt be enough, but it is really loud. I dont have much to compare it with but I would say it sounds pretty good and is definately loud enough for me. It was a lot of fun.