Author: kdk ★2017
Date: 2021-01-15 19:26
I have a few mouthpieces sitting in my drawer, including a couple of pre-10K versions (CF, CF+ and CWF) and a couple of 10K CFs. I think they're all what I would call "free blowing" with differences depending, as Paul has suggested, on the reed I test them with.
But, if you're talking about his new, post-Zinner (10K) mouthpieces, I don't see anything on Clark's website that confirms they will have the same characteristics as before Zinner closed. The page for CWF 10K (soprano) mouthpieces shows three different tip openings: C (0.95mm), W (1.00mm) and F (1.05mm). That's not what the original CWF Zinner mouthpieces were. There is a separate page for a CWF (non-10K) that Clark says still uses a Zinner A blank, which is in limited supply, since Zinner is no longer making the blanks. Clark's facing chart shows that its facing has a curve (17.5mm) a half-mm longer than the CF (17mm) and the same (quite close) tip opening (0.96mm). In theory the longer curve should give more freedom, but a half-millimeter on a hand-faced mouthpiece could be within a typical range of variation for a good refacer.
So, comparisons may depend on which CWF and CF mouthpieces you're comparing or even which specific examples of each mouthpiece you have available to test. It still comes down to trying individual specimens and choosing the one you prefer.
Karl
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The Clarinet BBoard
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