Non-steroidal anti-inflammatories such as aspirin, naproxen, ibuprofen, and voltaren, are well known to exacerbate preexisting tinnitus, and can also cause tinnitus and hearing loss. Neil Bauman, the author of the article below, is a well-known for his research and personal experience with issues pertaining to hearing loss. Inasmuch, Gripper, your experience with increasing tinnitus when taking aspirin isn’t unheard of.
http://hearinglosshelp.com/blog/anti-inflammatories-nsaids-and-tinnitus/
Kerry