Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Acura for this TSB. Call your local Acura dealer's service department & ask for a copy of TSB# B-PAS-09122013-9.
Affected Component: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
DEALER MESSAGE - AMERICAN HONDA (AHM) IS INVESTIGATING CERTAIN 2012-2013 TLS WITH SPEAKER NOISE ISSUES. TO FULLY UNDERSTAND THE CAUSE OF THIS OCCURRENCE, AHM WOULD LIKE TO INSPECT THE VEHICLE PRIOR TO YOU ATTEMPTING A REPAIR OF ANY KIND.