Don’t know if posted before, but here are some 12,000 year old ‘T’ speakers at Gobekli Tepe. Justified and Ancient?

http://1.bp.blogspot.com/_ckWrFNiurfA/SbWVo8Ca0rI/AAAAAAAABWs/JKd5wHul4v4/s1600-h/gobekli+tepe