Hello all Im new here and hope this forum is better than the others. Im looking for plans/advice for dual 21" bass bins. These will be used with my existing outdoor sound system. Im looking for something with the dimensions around 62" wide, 30-35" deep, and 27-30" height. Would be ideal if they could fit under my old Peavey stacks( see profile pic) I have searched everywhere and hope someone on this forum can help. Thanks!!