Ernest M. Skinner

Scientific Analysis Data Archives

Skinner Organ Company, Op. 535, 1925

Franklin St. Presbyterian Church – Baltimore, Maryland

A special thank you to Daniel Angerstein for his donation of time, expertise, and data for this pipe organ.

Unless otherwise noted, all material provided is subject to the CC Attribution-NonCommercial-NoDerivatives 4.0 International license.

Swell Mixture V (A-12, Willis 5)

Composition
Key Range (1-61) Pitch Pitch Pitch Pitch Pitch # of Pipes
C1-E17 15 (2′) 19 (1⅓’) 22 (1′) 26 (⅔’) 29 (½’) 17
F18-D#28 12 (2⅔’) 15 (2′) 19 (1⅓’) 22 (1′) 26 (⅔’) 11
E29-F42 8 (4′) 12 (2⅔’) 15 (2′) 19 (1⅓’) 22 (1′) 14
F#43-C49 5 (5⅓’) 8 (4′) 12 (2⅔’) 15 (2′) 19 (1⅓’) 7
C#50-C61 1 (8′) 5 (5⅓’) 8 (4′) 12 (2⅔’) 15 (2′) 12
          Total # of Pipes =  61

1 – 8 – 15 – 22- 29 – – Scale 1 7/8″ @ 2′ C
5 – 12 – 19 – 26 – – Scale 1 5/8″ @ 2′ C

2′ – 15th

2′ C1 Frequency Analysis (Normalized)

2′ Measurements (mm)
Pitch O.D MT MW CU
2′
C1 49.9 0.94 28.5 12.1
C13 29.4 0.75 16.5 7.7
C25 18.1 0.68 11.4 3.88
C37 11.3 0.60 7.33 2.32
C49 7.6 0.46 4.93 1.83
C61 5.5 0.46 3.4 1.3

1⅓’ – 19th

1⅓’ Measurements (mm)
Pitch O.D MT MW CU
1⅓’
C1 31.2 0.88 17.52 8.18
C13 18.8 0.58 11.06 4.37
C25 12 0.48 7.2 2.9
C37 7.6 0.47 4.96 1.63
C49 5.6 0.35 3.58 1.44

1′ – 22nd

1′ Measurements (mm)
Pitch O.D MT MW CU
1′
C1 31.0 0.66 17.32 7.77
C13 18.1 0.66 11.73 4.18
C25 11.2 0.54 7.24 2.8
C37 7.4 0.41 5.14 1.95

⅔’ – 26th

⅔’ Measurements (mm)
Pitch O.D MT MW CU
⅔’
C1 19.2 0.6 11.68 4.22
C13 11.9 0.53 7.37 2.77
C25 7.8 0.52 4.92 1.8

½’ – 29th

½’ Measurements (mm)
Pitch O.D MT MW CU
½’
C1 18.5 0.51 11.64 4.02
C13 10.9 0.44 6.87 2.49

2⅔’ – 12th

2⅔’ Measurements (mm)
Pitch O.D MT MW CU
2⅔’
F18 25.0 0.56 14.66 6.26
C25 19.2 0.56 11.45 4.09
C37 11.8 0.55 7.76 2.68
C49 7.8 0.51 4.7 1.7
C61 5.7 0.48 3.79 1.44

4′ – Octave

4′ Measurements (mm)
Pitch O.D MT MW CU
4′
E29 25.4 0.55 14.85 6.89
C37 17.9 0.58 10.97 4.24
C49 11.2 0.49 7.74 3.27
C61 7.2 0.43 4.47 2.05

5⅓’ – 5th

5⅓’ Measurements (mm)
Pitch O.D MT MW CU
5⅓’
F#43 15.5 0.52 9.8 3.69
C49 11.6 0.51 7.42 2.65
C61 7.6 0.5 4.81 1.83

8′ – Fundamental

8′ Measurements (mm)
Pitch O.D MT MW CU
8′
C#50 18.1 0.6 11.52 4.17
C61 11.3 0.48 7.06 2.82

Additional Data