D dim on E9 pedal steel
D dim = D · F · G♯ (root, 3rd, ♭5/♯11). 611 playable voicings on the standard E9 copedent — the best 12 by neck position below.
Low neck (frets 0–7)
Fret 3 · LKLLKL raises strings 4 & 8 a half step (E→F)Fret 5 · A + B + RKRA raises strings 5 & 10 a whole step (B→C♯)B raises strings 3 & 6 a half step (G♯→A)RKR lowers string 4 a half step (E→D♯); lowers string 5 a half step (B→A♯)Fret 0 · LKL + RKLLKL raises strings 4 & 8 a half step (E→F)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)Fret 0 · C + LKR + RKLC raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)LKR lowers strings 4 & 8 a half step (E→D♯)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)
Mid neck (frets 5–12)
Fret 9 · LKLLKL raises strings 4 & 8 a half step (E→F)Fret 11 · BB raises strings 3 & 6 a half step (G♯→A)Fret 8 · A + B + RKRA raises strings 5 & 10 a whole step (B→C♯)B raises strings 3 & 6 a half step (G♯→A)RKR lowers string 4 a half step (E→D♯); lowers string 5 a half step (B→A♯)Fret 8 · B + C + RKRB raises strings 3 & 6 a half step (G♯→A)C raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)RKR lowers string 4 a half step (E→D♯); lowers string 5 a half step (B→A♯)
High neck (frets 10–17)
Fret 11 · B + CB raises strings 3 & 6 a half step (G♯→A)C raises string 4 a whole step (E→F♯); raises string 5 a whole step (B→C♯)Fret 11 · B + LKRB raises strings 3 & 6 a half step (G♯→A)LKR lowers strings 4 & 8 a half step (E→D♯)Fret 11 · B + RKRB raises strings 3 & 6 a half step (G♯→A)RKR lowers string 4 a half step (E→D♯); lowers string 5 a half step (B→A♯)Fret 12 · LKL + RKLLKL raises strings 4 & 8 a half step (E→F)RKL lowers string 2 a half step (D♯→D); lowers string 9 a half step (D→C♯)