Historical clue formulations

• Auricle's site — 2016-04-19
• Wave recipient? — 2012-11-09
• Audio input location — 2010-06-08
• Natural wave catcher — 2007-12-22
• Catcher of sound waves — 2007-08-28
• It contains the auricle — 2007-06-16
• One end of a canal — 2007-02-09
• Canal locale — 2002-07-13