Same as Fig. 4, but now showing models with (black) and without (blue) local deposition of positron power. For the latter, we adopt the same opacity for positrons as for γ-rays. In this stacking, the spectra of models with the same He-star initial mass are normalized by the same factor (its value is such that the maximum flux of the model with local positron trapping is unity). The flux offset resulting from these two assumptions is stronger in models with the greater γ-ray escape fraction (i.e., those models with the highest expansion rate, which are typically those with lower initial masses).