Spectral-energy distribution of V746 Cas expressed as the absolute flux (in J s^-1 m^-2 m^-1 units; black crosses) and compared with wide-band UBV measurements from Hvar and Geneva, and narrow-band SED measurements by Glushneva et al. (1992). All the data sets were dereddened using E(B−V) = 0060 and standard procedures. While the model seems consistent with U data from Hvar and SED in the region 550 to 650 nm, there are still some systematics in B, V, and both short- and long-wavelength parts of the SED. It is not possible to improve , e.g. by changing temperatures of the components, because it would inevitably increase .