A disk drive that includes a head disk assembly (HDA) comprising a base having
a top base surface and a bottom base surface, and a top cover secured to the top
base surface; a printed circuit board assembly (PCBA) in communication with the
HDA and comprising a first PCBA surface and a second PCBA surface wherein the first
PCBA surface faces the bottom base surface; and a bottom cover fastened to and
substantially covering the bottom base surface. The invention further includes
an acoustic damping shield assembly placed between the bottom cover and the second
PCBA surface, wherein the acoustic damping shield assembly comprises first and
second acoustic absorption layers having major surfaces; an acoustic barrier layer
placed in between the major surfaces; and the major surfaces and the acoustic barrier
layer are fixed in a stacked relationship.