I now have a Whitecap on an Oak tube, and another on a Feadog tube. The tubes appear to be just about identical in diameter, fingerhole size, and fingerhole placement.
However, the Whitecaps are not identical. The one on the Oak has a window that’s about 4.5 mm deep (that is, measuring from the edge of the blade back), while the one on the Feadog is about 3.0 mm.
The difference in sound is very noticeable. The Oak is every bit as loud as the Jerry-tweaked Generation, and somewhere between the Gen and the Burke aluminum narrow-bore in purity/sweetness. It has moderate back pressure and can take a good bit of blowing in both octaves.
The Feadog, on the other hand, is the quietest of my 11 (!) high Ds. It is extremely sweet–but not the least bit bland. It has less back pressure than the Oak, but is still much easier to play than the Dixon tunable or the Clarke Original.
The Oak is particularly well-balanced across the first two octaves, while the Feadog is a tad louder in the second octave than in the first (but not actually loud in either). It does take a little adjusting to go to the Feadog after playing any of the other whistles, but once my brain is in that gear, it all goes very smoothly.
I now keep both of these in my bedroom. When I don’t have to worry about disturbing anyone, I play the Oak. When others are sleeping or watching TV, I can play the Feadog with no worries–it’s that quiet (and I am at the end of a long hallway). In spite of being so quiet, it is very playable, so that even using it to work on new tunes is not a problem. It doesn’t distract me with odd noises when I’m just trying to concentrate on the flow of notes.
I really love both of these, and am glad that they turned out to be so different. They make the perfect pair for my purposes. (Of course, I don’t plan to neglect my equally loved Gen, Burke, Busman, etc., and the indestructible Village Smithy will be my car whistle from now on.)
