For reference with the new transliteration capabilities, you would want to create language specific transliterations and put them into the /assets/plugins/transalias/transliterations directory. Currently the default one is as follow (see the actual file for non-entity conversion):
<?php
/**
* Common transliteration table
*/
return array (
'&'=>'and','\''=>'','À'=>'A','À'=>'A','Á'=>'A','Á'=>'A','Â'=>'A','Â'=>'A','Ã'=>'A','Ã'=>'A',
'Ä'=>'e','Ä'=>'A','Å'=>'A','Å'=>'A','Æ'=>'e','Æ'=>'E','Ā'=>'A','Ą'=>'A','Ă'=>'A','Ç'=>'C',
'Ç'=>'C','Ć'=>'C','Č'=>'C','Ĉ'=>'C','Ċ'=>'C','Ď'=>'D','Đ'=>'D','È'=>'E','È'=>'E','É'=>'E',
'É'=>'E','Ê'=>'E','Ê'=>'E','Ë'=>'E','Ë'=>'E','Ē'=>'E','Ę'=>'E','Ě'=>'E','Ĕ'=>'E','Ė'=>'E',
'Ĝ'=>'G','Ğ'=>'G','Ġ'=>'G','Ģ'=>'G','Ĥ'=>'H','Ħ'=>'H','Ì'=>'I','Ì'=>'I','Í'=>'I','Í'=>'I',
'Î'=>'I','Î'=>'I','Ï'=>'I','Ï'=>'I','Ī'=>'I','Ĩ'=>'I','Ĭ'=>'I','Į'=>'I','İ'=>'I','IJ'=>'J',
'Ĵ'=>'J','Ķ'=>'K','Ľ'=>'K','Ĺ'=>'K','Ļ'=>'K','Ŀ'=>'K','Ñ'=>'N','Ñ'=>'N','Ń'=>'N','Ň'=>'N',
'Ņ'=>'N','Ŋ'=>'N','Ò'=>'O','Ò'=>'O','Ó'=>'O','Ó'=>'O','Ô'=>'O','Ô'=>'O','Õ'=>'O','Õ'=>'O',
'Ö'=>'e','Ö'=>'e','Ø'=>'O','Ø'=>'O','Ō'=>'O','Ő'=>'O','Ŏ'=>'O','Œ'=>'E','Ŕ'=>'R','Ř'=>'R',
'Ŗ'=>'R','Ś'=>'S','Ş'=>'S','Ŝ'=>'S','Ș'=>'S','Ť'=>'T','Ţ'=>'T','Ŧ'=>'T','Ț'=>'T','Ù'=>'U',
'Ù'=>'U','Ú'=>'U','Ú'=>'U','Û'=>'U','Û'=>'U','Ü'=>'e','Ū'=>'U','Ü'=>'e','Ů'=>'U','Ű'=>'U',
'Ŭ'=>'U','Ũ'=>'U','Ų'=>'U','Ŵ'=>'W','Ŷ'=>'Y','Ÿ'=>'Y','Ź'=>'Z','Ż'=>'Z','à'=>'a','á'=>'a',
'â'=>'a','ã'=>'a','ä'=>'e','ä'=>'e','å'=>'a','ā'=>'a','ą'=>'a','ă'=>'a','å'=>'a','æ'=>'e',
'ç'=>'c','ć'=>'c','č'=>'c','ĉ'=>'c','ċ'=>'c','ď'=>'d','đ'=>'d','è'=>'e','é'=>'e','ê'=>'e',
'ë'=>'e','ē'=>'e','ę'=>'e','ě'=>'e','ĕ'=>'e','ė'=>'e','ƒ'=>'f','ĝ'=>'g','ğ'=>'g','ġ'=>'g',
'ģ'=>'g','ĥ'=>'h','ħ'=>'h','ì'=>'i','í'=>'i','î'=>'i','ï'=>'i','ī'=>'i','ĩ'=>'i','ĭ'=>'i',
'į'=>'i','ı'=>'i','ij'=>'j','ĵ'=>'j','ķ'=>'k','ĸ'=>'k','ł'=>'l','ľ'=>'l','ĺ'=>'l','ļ'=>'l',
'ŀ'=>'l','ñ'=>'n','ń'=>'n','ň'=>'n','ņ'=>'n','ʼn'=>'n','ŋ'=>'n','ò'=>'o','ó'=>'o','ô'=>'o',
'õ'=>'o','ö'=>'e','ö'=>'e','ø'=>'o','ō'=>'o','ő'=>'o','ŏ'=>'o','œ'=>'e','ŕ'=>'r','ř'=>'r',
'ŗ'=>'r','ù'=>'u','ú'=>'u','û'=>'u','ü'=>'e','ū'=>'u','ü'=>'e','ů'=>'u','ű'=>'u','ŭ'=>'u',
'ũ'=>'u','ų'=>'u','ŵ'=>'w','ÿ'=>'y','ŷ'=>'y','ż'=>'z','ź'=>'z','ß'=>'s','ſ'=>'s','Α'=>'A',
'Ά'=>'A','Β'=>'B','Γ'=>'G','Δ'=>'D','Ε'=>'E','Έ'=>'E','Ζ'=>'Z','Η'=>'I','Ή'=>'I','Θ'=>'TH',
'Ι'=>'I','Ί'=>'I','Ϊ'=>'I','Κ'=>'K','Λ'=>'L','Μ'=>'M','Ν'=>'N','Ξ'=>'KS','Ο'=>'O','Ό'=>'O',
'Π'=>'P','Ρ'=>'R','Σ'=>'S','Τ'=>'T','Υ'=>'Y','Ύ'=>'Y','Ϋ'=>'Y','Φ'=>'F','Χ'=>'X','Ψ'=>'PS',
'Ω'=>'O','Ώ'=>'O','α'=>'a','ά'=>'a','β'=>'b','γ'=>'g','δ'=>'d','ε'=>'e','έ'=>'e','ζ'=>'z',
'η'=>'i','ή'=>'i','θ'=>'th','ι'=>'i','ί'=>'i','ϊ'=>'i','ΐ'=>'i','κ'=>'k','λ'=>'l','μ'=>'m',
'ν'=>'n','ξ'=>'ks','ο'=>'o','ό'=>'o','π'=>'p','ρ'=>'r','σ'=>'s','τ'=>'t','υ'=>'y','ύ'=>'y',
'ϋ'=>'y','ΰ'=>'y','φ'=>'f','χ'=>'x','ψ'=>'ps','ω'=>'o','ώ'=>'o'
);
?>
To change the default transliteration, you would need to go to the Elements > Manage Elements > Plugins tab and choose the "transalias" plugin. Adjust the values stored in the configuration parameter to match your transliteration needs and enter an optional TV that can be used to override the transliteration used on a per-page or per-section basis (when used with @INHERIT):