I am measuring the frequency response(5KHz - 20KHz) of a small dynamic speaker driver with the stainless steel grill and without the grill.
Without the grill the response is what I would expect. However; when I have the grill ON; I was expecting some sort of attenuation across the board. However; instead of attenuation I am seeing a boost between 10KHz - 20KHz region.
Below 10KHz the response is similar to without grill.
Is there some sort of interaction of signal onto the speaker grill causing this behavior ?
I am trying to understand; what could potentially cause this boost ?