Dear Friends and Collegues, Yesterday I serviced an Ahlstrom Upright listed in the piano atlas but no serial number sequence. This particular piano had a fourth string in the last 3 octaves. This string was not being struck by the hammer. The piano is strung through agraffes, 4 holes (and 4 tuning pins per unison), another agraffe below being an individual v-bar, and the extra string through a hole that sits lower than the 3 strings. My original analysis is that the extra string is to ad harmonics within the upper section. I did pluck it to the same pitch as the 3 stings. Obviously since the Pierce Atlas lists the Ahlstom piano and no serial numbers, not too many were made. What are your thoughts? Have fun. Dave Peake, RPT Portland, OR
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