Can the variable resistor be inside the XLR adaptor low cut filter so that the slope is variable as in the excellent Sennheiser MD421, MD441 microphones?

See next post on improved Pleiades wave filters.


http://euroelectron.blogspot.gr/2018/05/improved-pleiades-filters.html


Can the variable resistor be an elegant rotary dial around the circumference of the barrel adaptor. Or perhaps half of the adaptor being able the rotate against the other half while adjusting for close to flat producer's brain to listener's brain frequency response.