MTU 12V4000Bx4 Operating Instructions Manual page 171

ID
Engine surface noise with at-
tenuated intake noise (filter)
– BL (free-field sound pres-
sure level Lp, 1 m distance,
ISO 6798, +2 dB(A) toler-
ance)
Engine surface noise with at-
tenuated intake noise (filter)
– BL (sound power level LW,
ISO 6798, +2 dB(A) toler-
ance)
1
R dB(A) 106
R dB(A) 125
MS15038/01E 2018-11 | Technical Data | 169
2 3 4
106 106 107
125 125 128
5
107
128