I agree with you. Just yesterday, I witnessed the effect of hammer density on a Yamaha C7. Also, I happen to like the feel of a curve 6 SW in combination with an action ratio of around 6. >And soundboard response too but I think that hammer density can trump SW >(except maybe in extreme cases) and there are many examples of a light >hammers on higher tension scales (older Steinway D's and older Bechsteins >come to mind) where the they were more than adequate to the task.
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