Chuck told me this morning that he had been asked for a size reference for the Improv. I with I’d thought of taking a photo of an Improv and an AT together!
I’m going to try to composite a photo so that it shows both, if I can get the scale just right. If it does the job, I’m going to post it to the blog. Otherwise, I’ll post a wireframe drawing.
The best I can do as of right now is to say that the Improv is 1.5″ wider and 1.1″ longer than an AT. The headstock is also about 10% larger. The f-holes are similarly larger, but the proportions and placement are different.
The AT is 1 3/4″ thick at the edge. The Improv is 2 1/8″ thick at the endpin, and tapers to 1 3/4″ at the heel. There is a side-on shot of guitar #0282, which shows the taper really well.
There’s a story behind the taper. The guitar was originally designed, like a typical archtop, to be the same thickness from end to end. But, when Chuck assembled the mockup, he thought it looked too clunky in the heel area; so he disassembled it and took a belt sander to the parts. When he re-assembled it, it looked like a completely different instrument.
Because of the taper and careful design of the interior, the weight of the 1 pickup version is about 1/2 lb less than the Professional Acoustic, and the 2 pickup version weighs about the same.