Filter at low frequency having near no effect on adau1701

Hi,

I've been trying to notch out a frequency in the 40-60 range, specifically 56-63.5 by using a peaking filter and it's giving me unusual results, I think because there's a limit on the bandwidth that's available to the adau1701 for affecting frequencies in the lower range.

Below is a screen shot of what I've done, which is having barely any effect on the signal until I place the Q value to below 0.8.

Where as in EQ APO I can do it like so, with just -3.5db and have a much more pronounced effect, no issues:

Is there any way to work around this?

Setting a Low Q value obviously means that I might as well just turn down the sub manually as it ends up affecting the whole range.