No, you wouldn't bother ... if the limitations are too severe - I managed to get a larger TV to do decently, but a smaller bedroom one had major issues from the word go, and after some experimenting showed no promise anywhere - it was pointless continuing.It's not as if the general principles are mysterious: to reproduce the full audible spectrum at high SPLs with low distortion and noise requires certain minimum, obvious levels of "engineering" - and minimum levels of real hardware. A portable TV with a 3 inch full range speaker (or whatever) cannot reproduce bass, cannot reproduce upper treble, cannot reach higher volume levels without distorting electronically and mechanically, is noisy, has peculiar dispersion patterns and so on. There's nothing you can do to get anywhere near "high fidelity" to the recording without completely rebuilding it - there would be nothing left of the original. Why bother?
Of course good engineering from the start is the real answer, but this is still hard to find; why do systems hooked together from any components of reasonable cost not sound brilliant, from the get go, every time? That's where the crack in the mirror is ...