Seems to be lots of misinformation being posted about the D46S series re. solid/laminate. These guitars have solid tops & laminate back & sides.
You'd really have to offer examples, rather than just "SOME people are WRONG!!"
Have you actually TOUCHED a D46SP, or are you just making stuff up from stale air?
(If it helps any, I've got the CESPK about 20 feet away.)
If an "S" is immediately after the digits, it's probably
a non-ply top. We cannot expect that Washburn will never
violate these simple assumptions.
So, with the D46CESPK, the "SP" was put far away from the digits... which didn't work out with the no-frills D46SPK.
No international conspiracies, no alien mind-control.
Washburn COULD have avoided the whole thing by instead using "M".
And near as I can figure, "K" stands for "kit" -- I saw it used with some entry-level acoustics with bag, strap, booger rag, peg winder, & DVD.