Thank you Mike, Tom and Frank for your kind comments. Much appreciated (and more than generous!
blush)
Benderman, I don't have the "before" sound on this P12. There is definitely a robust bass tone with this guitar (with the soundhole being part of what the player hears). But can't comment on tone change vs original barn door config - perhaps Tom will comment? This weekend I'll cover the soundhole and try a few A/B recordings with and without and report on that. Please also check out the video of this guitar being played.
Benson, replied to PM - thanks for your interest!