when i play any sound my mac makes a really low and slow wub sound?
whenever I play any sound my mac makes a really low and slow wub sound and continues for a time after... my mac is a late 2014 27" ive tried resetting the NVRAM and the PRAM but it didnt do anything.
iMac (27-inch, Late 2013), OS X Yosemite (10.10.3)