This work investigates the effect of body position on voice quality, based on cepstral peak prominence (CPP) and spectrum balance (SB) metrics layered on a mapped speech range profile (SRP) across a sound pressure level (SPL) and fundamental frequency (f_o) plane. Eight participants were tested in an upright position, supine position at 0º and an inverted position at -10º. Findings show varied and small changes in voice quality in connected speech between positions and that effects may occur at specific SPL and f_o ranges among some participants.