The simple answer is they are chicken to try something new lol. Store/ID subs are bound by a few things. Size/weight/price. DIY'ers don't have those restrictions. We don't have to ship anything, make unique designs that fit into what were are doing and can use the highest possible quality of drivers/materials possible.I could DIY on the subs to save money but I'm worried if I will just spend money for not so good output. If Subs are that easy to make why do people spend 3K to buy just one
And I'm extra lucky in that I have a world class sub designer/builder 15 mins away from my house!