Packing & Shipping Large/Heavy Speakers

Use the same people that ship PINBALL MACHINES across the USA Every single Day.  I use to use Bettman Logistics but their website no longer works. They would come to my house and blanket wrap/Clear wrap my machines and take them anywhere.  Not sure if these places have boxes to use but they definitely have pallets. I shipped 50+ machines with no incidents. The PINBALL hobby is pretty huge so shouldnt be too hard for you to see who everybody is using on the internet these days.  Just a thought.

This all gets back to doing whatever you can to prevent shipping damage in the first place, because once it gets damaged you have lost, insurance or not.

There is a reason Vladimir Lamm packaged all of his electronics in wooden crates and would only ship by FedEx air.

This is why I'd never buy very large, expensive, floor-standing loudspeakers that are not manufactured within a comfortable driving distance from home. 70 lbs per speaker is about my size limit.  A ~half-day drive away is about my distance limit. 

Other large products (like appliances) have in-home service networks. Back in the 50s or 60s, a TV repair guy would come to the house.  Never heard of that for HiFi. Good thing speakers usually last a long time.  

My speakers weigh 133 pounds and came in two cardboard boxes, strapped to a pallet. There was a cover and foam around them and then into the boxes.

All the best.

Thanks to everyone for the advice. I will be contacting manufacturer for advice as well as various crating/freighting companies to get an idea of price and services, and if that fails I will try to (over)pack on my own.