This is how they started, a pretty beat up set of Tannoy Cheviots. The drivers had fairly good foam surrounds and were otherwise mint. Basic chipboard vented box of 65L tuned to 40Hz. I bypassed the Tweeter controls - otherwise standard. The Project, is to produce a more rigid cabinet of 100L, tuned to 35Hz and upgrade the x-overs (Inset). Please feel free to use any of this project, for non commercial use, if you wish.