John Erskine Posted May 22, 2012 Share Posted May 22, 2012 I wonder if someone would be kind enough to settle a small argument... According to NPOR, the wind-pressure for Swell flues on the St Paul’s organ is 4½; the records of Henry Willis & Sons (apparently) give 3½. Which is correct? (Or is it that the pressure was 3½ and has been increased to4½?) Thank you. Link to comment Share on other sites More sharing options...
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