I second the U-Haul suggestion . They make a fairly large box called a wardrobe that I used for some JM Lab Electra
926's (mentioned for size comparison) . That coupled with some 2'X 4' strofoam insulation sheets from Home Depot made for a very sturdy and protective shipping container . The two wardrobe box's and two packages of the styrofoam with a role of heavy duty box tape was about $50.00 total . I have used this method twice and received nothing but praise for the packaging of full size floor standing speakers that were shipped across the country by Fed X .
Good luck !
926's (mentioned for size comparison) . That coupled with some 2'X 4' strofoam insulation sheets from Home Depot made for a very sturdy and protective shipping container . The two wardrobe box's and two packages of the styrofoam with a role of heavy duty box tape was about $50.00 total . I have used this method twice and received nothing but praise for the packaging of full size floor standing speakers that were shipped across the country by Fed X .
Good luck !