>It's trivial to get perfect on-axis sound (ie, the tweeters are pointed at your ears) even with cheap speaker components if you add some active DSP Common dig

>It's trivial to get perfect on-axis sound (ie, the tweeters are pointed at your ears) even with cheap speaker components if you add some active DSP Common digital room correction systems can improve the time-invariant linear components of an audio system's distortion (phase and frequency response) by convolving with an impulse response. The best results are obtained at a single point listening position, not a whole line. This technique cannot restore frequencies that were cancelled out by destructive interference, and may increase noise to unacceptable levels at frequencies where it has to apply gain. It supplements room treatment, not replaces it. It does nothing to improve non-linear distortion, e.g. harmonic and intermodulation distortion from soft clipping or asymmetries in the speaker motor, or time-dependent distortion, e.g. dynamic range compression from the coil overheating, or so-called "Doppler distortion" (better named phase modulation distortion[0]) from significant excursion of the cone. How much distortion matters depends on personal taste and listening material. Moderate harmonic distortion can be very difficult to hear in some sounds. And as the popularity of vinyl and tube amps show, some people prefer more distortion. [0] https://sound-au.com/doppler.htm https://sound-au.com/doppler.htm