Model spectra computed with CMFGEN for the magnetar-powered RSG explosion models and corresponding to an epoch around bolometric maximum (see label for model name and post-explosion epoch). We stack the spectra vertically starting with the reddest at the bottom (model Re0p4B1) and progressing upward toward bluer spectra. Each flux spectrum is normalized at 10 000 Å and shifted vertically for visibility (the ordinate tick mark gives the zero-flux level).