1950s style drive-in speaker fits 4" speaker. i used insignia" best buy" indoor outdoor speaker sets.
i have also included my tripod parts, my speakers are used with a projector and screen outdoors. to make the tripods, you need both top and bottom rings, and 3 sets of the 3 piece legs it will be connected with 1/4" , or 10mm bolts. the legs will fold and were designed based on drum stands. the pipe is 2" pvc pipe painted silver.
the top parts are designed to look like speaker boxes, i have welded the boxes directly to the speakers