  To test the primordial power spectra predicted by a double inflationary model
with a break of amplitude $\Delta=3$ at a scale of $2\pi/k\approx 10 \hm$ and
CDM as dominant matter content, we perform PM simulations with 128$^3$
particles on a 256$^3$ grid. The broken scale invariance of the power spectra
explains the extra power observed in the large-scale matter distribution.
COBE-normalized spectra and a linear biasing with $b\approx 2$ are shown to
reproduce the reconstructed power spectra from the CfA catalog. Identifying
galactic halos with overdensity of approximately two times the cell variance,
we can fit the angular correlation function using both the Limber equation and
creating a APM-like angular projection with the observed luminosity function.
Finally, the higher order moments of the galaxy distribution are shown to fit
reasonably well the observed values.
