1) Sizzling sibilance in the treble
2) greatly exaggerated fundamental range
3) No (right) Bass
At 1) can unfortunately not do much; if one turns down the tone control, it quickly becomes quite dull.
2) there is a simple remedy; simply plug insulating wool in the bass reflex ducts until untenhin. The fundamentals are thus balanced.
3) is due to the size of the speakers. Who wants proper bass and no "pseudo-root-boom bass" must easily buy larger speakers.
Despite these problems, one can be quite satisfied with the T10 when they have been tamed with insulating wool or other soft material slightly. The sound on the TV was significantly upgraded over the integrated speakers. I also had the T20 in the selection, there is, however, according to a test of the (standby) power consumption too high.