With the original design, using the 1.5k resistor at R16, the sim shows a 70% current load fraction for the Aleph current source, not 50% as I thought was desired. This is based on calculating Irms at both 60Hz and 1kHz across R0/R1 and R14/R15. I end up with ~2.1k for R16 for the 50% load factor.

Is this due to the limitations of the models? Other than this the model seems to check out, votages, bias currents, ~max RMS power, etc. I used IRF's and zetex's semi models, but spice idealized resitors and caps, not the semi models for those parts. Has anyone else Spiced the ZV4 or built up the Amp and done the measurement? Just curious.....

Thanks