MTU 20V4000Lx2x Operating Instructions Manual page 33

Acoustics
Number of cylinders
Exhaust noise, unsilenced - DL (sound power level LW, ISO 6798)+
Genset surface noise with attenuated intake noise (filter) - DL (sound power
level LW, ISO 8528-10)
Table 32: Acoustics
MS150122/00E 2015-07 | Product Summary | 33
20
R dB(A) 113
R dB(A) 118