Comparison of the HST spectrum with two predicted BLR synthetic profile for NGC 1052 (left), NGC 4278 (center), and NGC 4636 (right). The blue curve represents a BLR with flux derived from the X-ray flux and a width of 6500 km s^-1, conservatively reduced by a factor 10 to explore its detectability in the HST spectrum. The normalization of the red curve is derived from the [O III] flux, in this case reduced by a factor of 3.