Dear Capt. Scott,
You really need to do some research before you think of yourself as an expert on designing and building speaker cabinets.
Your comment of “its just a cardboard box without speakers in it” is like saying a Custom PRS or a John Suhr guitar is comparable to a off-the-shelf Ibanez once you take the hardware off of it, “it’s just wood”…
These are from the same stock of custom boutique guitar cabinets that were built for Pat Travers, Steve Morse, and Paul Stanley and I believe those guys can tell the difference between a quality tuned cabinet and the common as you call it “cardboard” speaker cabinet.
Here’s a little lesson for you… All speakers have these things called "Thiele/Small" parameters which are all unique to each speaker “basically like a fingerprint” and the cabinet much match the internal volume of the cabinet in order to have peek performance which the average guitar speaker cabinet does not, mostly because the average guitar player can’t afford to have a cabinet of that caliber so the go with the standard off the shelf cabinet which work under most circumstances but for the picky of us we match everything, even down to the internal gauge wire used, which is more important than you know for low resistance and lowering thermal distortion.
Here is the breakdown:
2-sheet of 19mm 15-ply Russian birch plywood (A-A Void free grade) $110 each (without shipping)
Line-X heat thermal coating $70
Imported Cane Grill $85 (without shipping)
Edge Mount Handles $30 (without shipping)
Metal (not Plastic) connector mount with ¼ & Neutrik NL-4 connector $50 (without shipping)
14-guage Monster Cable (Balanced Pair) $10 (without shipping)
Dado/Rabbet construction All cut on a CNC machine for precision
Labor and design time and testing…
These were left from the factory when it closed down in North Carolina so we are basically giving these away to get them out of storage and for a real musician with a real set of ear that knows what they are listening too would appreciate these cabinets but someone like yourself that thinks a Ferrari is the same as a Ford pickup just because they are both motor vehicles, you need to stay with your cardboard box guitar cabinets so you won’t get confused and feel badly about your choices in life… Just kidding!
These are boutique guitar cabinets and not for the average players… Sorry!