Is ch a legal HEAD-AMP / chanmap wire channel (0x00..0x2f)? Deliberately 48-wide: an S-1608's inputs 9..16 live at CH 32..47 and MUST stay addressable — bounding this by the audio fabric's 40 is the "48V never lit" bug.
ch
0x00..0x2f
Is
cha legal HEAD-AMP / chanmap wire channel (0x00..0x2f)? Deliberately 48-wide: an S-1608's inputs 9..16 live at CH 32..47 and MUST stay addressable — bounding this by the audio fabric's 40 is the "48V never lit" bug.