SoundTraxx Tsunami Steam Technical Reference - Manual (Page 79)

Tsunami Technical Reference Page 77
CV 181 DDE Exhaust Low Volume Limit
Bits 0-7: D0:D7, DDE Exhaust Low Volume Limit
0 = 0dB
255 = -12dB
Contains a value between 0 and 255 (n) that sets the
maximum attenuation level of the exhaust sound when
the locomotive is under light load. The attenuation level
may be set between 0 and -12dB of the original mixer
setting.
Default Value: 255
Bit 7 Bit 0
D7 D6 D5 D4 D3 D2 D1 D0
DDE Control CVs