you no understand, this is for homade sub. if you have speaker to good to cut hole, then you can pay for pro sub see?
also,you have to put mikes in speaker bottom to collect bass notes, see the genious? wireles
+ i forgot you can also make plywood cover for homade sub to covr up bass guitar amp and make look like pro sub, real world!
save big, reflect

#1 Audiopile. music make everything. copy kill music. REFLECT!