>My experience and that of the techs in a number of my seminars, especially >the latest ones in which a beautifully prepared piano was the specimen, is >that the sustain can be improved from five seconds to 30 seconds or more >when >the duplex scale is tuned. OK, OK, I surrender-----and I'll bite. How is this wondrous miracle accomplished? What is the protocol? How long does it take? David A.
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