This paper presents an acoustic study of coarticulation of Argentine Danish /ts/ using Centre of Gravity (CoG) as the acoustic measure. It shows that the articulation of /ts/ is affected by the roundedness of the following vowel, and that this is more prevalent among speakers of Argentine Danish than among speakers of Modern Danish as spoken in Denmark. The analysis also shows that within Argentine Danish, the speakers of the isolated settlement Eldorado have a larger effect of roundedness in their articulation of /ts/ than the speakers of the settlements in the Pampa and in Buenos Aires. The results are discussed from the perspective of phonological theory on enhanced coarticulation as a source of sound change and from the perspective of theory of language change in heritage languages.