Originally Posted by GoodOldDog
One thing worth noting is the particular case of DSP speakers. It is speculation from my part, but the filter coefficients MIGHT be the result of aggregating several filters (bandlimited upsampling + apodising + digital crossover bandpass - or low/high pass - specifically for DSP speakers).
This is not the case. DSP speakers have separate filters for upsampling and bandlimiting for each unit. It is also logical to keep that separated, because upsampling is not necessary if the incoming signal is already hi-res.