Median composite SEDs are shown for the red QSO sample (solid lines of different colours) and matched control QSO samples (dotted lines of different colours), now split into different bins of L_6 μm (left-right) and z (top-bottom). All composite SEDs have been renormalised to the same L_6 μm for purposes of visualisation. The grey solid and dotted lines represent the total SEDs for the red and control samples, respectively. The remaining colours codify the different physical components as described in the legend of Fig. 3. The luminosity and redshift bins considered and the number of sources included in each bin are annotated. The contribution of the stellar emission of the host galaxies has a clear contribution to the total SEDs in the lower redshift bins and to luminosities of L_6 μm < 45. A remarkable similarity in the composite torus SEDs of red and control QSOs across all redshift bins can be seen.