Uxcell Mediant Stereo Speaker Navigator Review

I bought a set of these little speakers about 6 months ago and recently reordered (using the reorder button to select the same supplier). The new speakers are similar but differ in magnet size and plastic shape. Especially at rated power, the membranes of the final speakers seem to collapse due to odd harmonics. Granted they are cheap but I'm a little disappointed that the quality and source are so different when the first group was ok.