Not much too add but if you have the patience .You can wrap the speakers in plastic as newbee says. Stop by Lowes and pick up some R3 residential styrofoam 7x4 ft sheets. They should run you maybe $5.00 a sheet. Two sheets will be plenty for those speakers.Lay the speaker on the sheet and trace your sides in pairs.Basically trace, cut and attach the identical sides first.Do the same with the remaining two sides. Once they are all secure, wrap tape around the entire speaker.Trace your top and bottom end caps after the speakers are in cased around the sides.If done correctly the speakers should look like they are in a styrofoam box. If need be double the styrofoam on the end caps or corners.Now cut and fit a double cardboard box over the styrofoam. 120 lbs isn't that heavy for a pair of floorstanders. I shipped a pair of speakers totaling a little over 260lbs to Germany.They didn't have a scratch on them when the owner got them.No crates were used. I've also shipped several amplifiers this way. Best shipping company I've used on average for heavy items is Bax Global.
Their ground service is really fast!
Good Luck!
Their ground service is really fast!
Good Luck!