Shipping large speakers

Definitely strap the boxes and strap to the pallet. Actually, I shrink wrapped the boxes before strapping.
My buyer used Uship:
https://www.uship.com/
It worked out quite well.
Bob

@olesno ,
If the manufacturer feels Fed Ex is up to the task, then don't sweat it.
Though, in my opinion, I would ship them freight. Those delivery guys have to handle tons of heavy boxes each day, so I wouldn't expect 'white glove' service.
B