Cdim(maj7) 8-string bass chord

How to play Cdim(maj7) on 8-string bass

The most common way, the first shape above: lay your index finger flat across the four strings from the B to the D at the 1st fret, your ring finger on the E string at the 2nd fret and your little finger on the A string at the 2nd fret. Don’t play the F♯, G, C and F strings.

From the F♯ string x 1 2 2 1 x x x (x: not played, 0: open)

What notes are in Cdim(maj7)?

Cdim(maj7), C diminished major seventh, is C, E♭, G♭ and B: the root (C), the minor third (E♭), the diminished fifth (G♭) and the major seventh (B). Its formula is 1 ♭3 ♭5 7.