Help shipping a speaker over seas


I'm in the process of shipping a pair of monitors overseas and getting a bit worried on all the things that potentially can go wrong once the parcel is out of my hands.

Any shipping tips or must do's that would help alleviate my concerns that I should consider
The speakers are approx 40lbs each and 12x10x9

Any relevant opinions very much appreciated
musicfile
Here's a few more details as requested

I'm shipping these to Europe
I will be using styrofoam to protect the speakers for each box
The speakers MSRP is approx 4k
Use Bax Global. I shipped a pair of Wilson Duettes during the Winter to Hong Kong. They arrived without issue in 2 days and cost less than shipping via UPS ground to California (from Michigan). The shipment was one crate at over 100 pounds. This is exactly where BAX specializes and they do an excellent job, fast, reliable and reasonably priced. For what it is worth, we ship all of our (my company's) equipment for the optical disc industry to Mexico vis BAX Global and have never once had any damage or lost shipments.
Also, I would definately use wooden crates, especially since they are likely to be opened for customs inspections. Cardboard won't do (at the very minimum line the inside of the outer cardboard box with 1/4" plywood on all sides). Secondly, I would avoid using the US Post Office under virtually any circumstances. It could be months before they arrive.
ckoffend
I thought Bax Global was only available to businesses not private sales

Are you aware of this
I have never encountered this as a requisite. When I sold my speakers to Paul in Hong Kong, I sold them as an individual. Perhaps since they were picked up at my company, this was not an issue as they work with my company for our business shipping of specific items to certain locations.

So you may be 100% correct, but it would seem easy enough to just book the shipment through your employer/company if necessary.