| STU C2 65.406 Hz | STE C2 65.406 Hz |
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| STU length: 290cm. 19ribs A STU for C2:positioned where the C2 bichord wound strings are coupled to the bass bridge, 64.5 cm from the rear, 36 cm from the curved front side, 68.5cm from the straight rear side, B STU for C2: 86cm from the straight rear side. 23cm from the front curved side, 123cm from the rear end. |
STE length: 273cm. 17 ribs A STE for C2: positioned where the C2 trichord wound strings are coupled to the bass bridge, 63cm from the straight rear side, 72cm from the rear end. B STE for C2: 84cm from the rear end, 80cm from the straight rear side, 23cm from the curved side. |
| C2 A & B Probe Positions Stuart and Steinway Soundboard Fig 3.7 | |
| STU C3 130.81 Hz | STE C2 65.406 Hz |
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| STU length: 290cm. 19ribs A STUfor C3: positioned where the C3 trichord strings are coupled to the treble bridge, 117 cm from the rear, 57 cm from the curved front side, 53cm from the straight rear side, B STUfor C3: 18cm from the straight rear side and 126cm from the rear end. |
STElength: 273cm. 17 ribs A STEfor C3: positioned where the C3 trichord strings are coupled to the treble bridge, 42cm from the straight rear side, 57 from the curved front side, 83cm from the rear end. B STEfor C3: 72cm from the rear end, 37cm from thestraight rear side, 63cm from the curved side. |
| C3 A & B Probe Positions Stuart and Steinway Soundboard Fig 3.8 | |
