In this paper, three line chart sonification strategies are contrasted in a user-study examining performance outcomes and perceived difficulty. Auditory line charts are a simple and potentially effective form of parameter-mapping sonification and can be designed easily using freely-available software or a web app. However, an auditory graph’s efficacy is affected by a number of design factors such as presentation rate, tonality, and frequency range. Of these three factors, the frequency range remains relatively unexamined in sonification literature and, as such, is the focus of this paper. Three approaches relating to the frequency range are examined, including one that uses a form of amplitude compensation to account for the human frequency response. Results of a user study involving three groups of 16 participants show that a shorter range between 400 Hz and 1400 Hz performs just as well as a wider range between 65 Hz and 1480 Hz. Furthermore, the results suggest that using basic amplitude compensation on the wider range has no significant effect on performance or perceived difficulty.