An acoustic virtual environment (AVE) may be used to study the perception of audio sources at different positions in a simulated room. To this end, the geometry and acoustic properties of the room have to be taken into account to create a plausible spatial listening experience. In our project as part of the SPP 2236 Audictive, we are interested in perceptual and attentional processes within real and virtual 3D spaces, especially distance perception of sound sources in reverberant rooms. Within the AVE, we aim to generate a plausible acoustic reproduction of robots in a reference shoe-box room. The used AVE (Gergen et al., 2012) takes early reflections via the mirror-source model into account and employs a statistical model for the generation of late reverberation. In this contribution, we will present insights into the calibration of the AVE for distance perception experiments. We employ recorded and simulated binaural room impulse responses of both a dummy head and real participants at a fixed listener position and robots at up to five spatial positions (left, right, near, mid, far). The calibration by means of physical measures then paves the way towards a series of psychophysical calibration measurements using a simulated audio-visual test environment.