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Building a home organ - specification thoughts

Started by Light_bulb, July 07, 2021, 02:47:04 AM

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Light_bulb

Hi all,

Last year I had the opportunity to pull an organ out of a church that was about to be demolished. I'm making steady progress towards getting it rebuilt in my music room.
The original spec of the organ is this:
Great

  • 8' Open Diapason
  • 8' Dulciana
  • 8' Clarabella
  • 4' Octave (called a gemshorn, but built like a principal)
Swell

  • 8' Violin Diapason
  • 8' Rhor Flute
  • 4' Flute
  • 8' Oboe
Pedal

  • 16' Bourdon
  • 8' Bass Flute

I'm wanting people's opinions on what I'm planning on doing, which is:

  • Add a independent twelfth and fifteenth, to build up the principal chorus and to use electromagic to make a mixture
  • Add some proper strings to the swell, such as an 8' Viol and a celeste
  • Some sort of 16' trumpet for the pedal, extended to 8' for use on the great
  • Extension of one of the flutes up to 2' for the Swell
  • Making 12 pipes to extend the 8' open diapason down to 16' in the pedals (fortunately I have the room for this)

Using the various options this pipework will give me, I'm hoping for a final specification of:
Great

  • 8' Open Diapason (A)
  • 8' Dulciana
  • 8' Clarabella
  • 4' Octave
  • 2 2/3' Twelfth (B)
  • 2' fifteenth (C)
  • Mixture - from B & C
  • 8' Trumpet
Swell

  • 16' Bourdon - from D
  • 8' Violin Diapason
  • 8' Rhor Flute
  • 8' Viol
  • 8' Celeste
  • 4' Flute (E)
  • 2' Piccolo - from E
  • Maybe some mutation from B
  • 8' Oboe
Pedal

  • 16' Open Diapason 13-30 from A
  • 16' Bourdon (D)
  • 8' Bass Flute
  • 16' Trumpet/something

In the long run I want to rebuild some of the chests as they're a mix of EP sliders + offset tubular pneumatics, but finding enough cheap electromagnets is difficult.