Bass boost response seems jagged when plotted with ARTA

[ereder4]

I'm plotting the response of an L/C  passive filter with ARTA, the bass cut curve is smooth, but the bass boost seems rather jagged.

Could this be normal/negligible? The shape of the jaggedness never changes or fluctuates, so I don't think it's some sort of noise. Different L/C set is used for boost and cut, so I suppose there could be an issue with how I wound the boost inductor?

Thank you!

 

[emrr]

That's about what distortion looks like.  Tried lower level?

 

[ereder4]

D'oh. Didn't think about that. I will try a lower level.

Does that jibe with the unchanging shape of 'jaggedness'? It's always precisely the same.

 

[emrr]

Maybe.  I've seen RF look similar too.