PGSS sign for BASS-CONTROL

BASS-CONTROL [Control for lower frequencies]
Hold 1st hand as for SOUND, and at same time hold 2nd thumb 1st finger hand, thumb and 1st finger pointing forward & fingers upward, at waist-level in line with own side; then by wrist action turn 2nd hand till thumb and 1st finger pointing inward & fingers forward.
[Compare TREBLE-CONTROL]