It’s a lesson learned well by me..
Ship the package no matter what it is, as if it is coming BACK to you..
THAT is the only way to pack.
They cannot move inside the first box and the speaker grills usually are removed and reversed and securement tongs face out away from the back of the speaker, not the front.
You cover the speaker with softbag then with plastic. Heavy styrofoam for shipping heavy object is the key.. Pink 3M project foam is what I charge the customer when I have to critical ship. 1.5" all the way around. I tape it in place don’t get NUTS, remember the customer has to remove it without wrecking everything.
Build the first box around the speakers, TIGHT, nothing can move. ZERO, inside the box. If you have to get foam bags, charge the customer, IF THEY BITCH, give them their money back NOW.. BAD customer.. The second box 1.5 inches of space between the inside box and the outside box. You don’t have wrap the first box with styrofoam. BUT IT CAN’T move inside the second one.
NOW if its dropped so hard that the inside touches the outside, you will see it...If something from the outside touches the inside box (a forklift blade), you will see it..
I also look at the crossover and I will use an expanding foam bag to secure it.. Some manufacture are just NUTS hanging an OX in a box They securing the heck out of the OUTSIDE and the GD XO is hanging inside all busted up..
UPS, FedX, DHL, LOVE ME!!! They may ship it to the wrong continent BUT it won’t be broke when I get it back..
Shippers are not the problem (usually), packers ARE...
Palletize and mark the heck out of it.. "Fragile", "Handle with care" "Electronics" HEAVY"
DO NOT REMOVE FROM PALLET!! Do not remove shrink wrap.
If it's not marked, just run into it with your car, same silly way of thinking.. MARK THE PACKAGE...
Regards