Interesting simulation, didn't thought the little added acoustical mass will change something at the resonance frequency! Would be very interesting if you can measure that in real live too, these simulations are often ... optimistic. (e.g. the Q of the peaks is always way of)
The main peak is in the 400Hz area and a roll off above - that's what I expected as effect.
The main peak is in the 400Hz area and a roll off above - that's what I expected as effect.
