A physical experiment (e.g. a water tank or air-filled cavity) can be fully linked and immersed within a virtual (numerical) domain through the real-time exchange of boundary conditions between the physical experiment and the numerical simulation. Such immersive wave control experimentation requires active sources that are densely distributed around the boundary of the experimental setup; the signatures of these sources are predicted using a Kirchhoff-Helmholtz integral from the waves recorded at an array of receivers that are placed inside the experimental setup. The Green?s functions in the Kirchhoff-Helmholtz integral are computed in a numerical model that includes scatterers in the surrounding virtual domain, such that boundary sources can reproduce the waves scattered back from the virtual domain into the physical domain. In immersive experimentation, active boundary sources should (theoretically) be monopolar with isotropic radiation. However, both moving-coil loudspeakers and piezoelectric bender-mode X springs (active boundary sources used in 2D and 3D experimentation, respectively) do not fully satisfy this requirement. Following the method proposed in Li et al [J. Acoust. Soc. Am. 146 (2019) 3141] where both the influence and compensation of source radiation patterns in immersive experimentation are illustrated, we carried out laboratory applications of directive sources in immersive experimentation both in a 2D circular wave-guided plate and a 3D water tank. For the single-face validation of 3D immersive experimentation, we propose an alternative simplified compensation algorithm in which Green?s functions in the Kirchhoff-Helmholtz integral are processed purely in the time-domain when only considering cancelling primary out-going waves in the physical domain. The basic idea of source directivity compensation can also be extended to compensate for an imperfect rigid boundary where reflections coefficients are less than one.