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.
Packing & Shipping Large/Heavy Speakers
I have a pair of Legacy Whisper XDS's I'm wanting to sell. They measure 63x17x13 and probably weigh about 200lbs (or more), so extremely large. Most of the advice I've read is simply to crate them on a pallet and then ship freight; but how to go about that? I know for freight shipping there are websites to get quotes, but it's really the packing aspect I'm concerned about having never tried to pack anything this large.