Magnat Monitor Supreme 100 bookshelf speakers sound/bass test

I found these for 15€ at the flea market, thought they look pretty neat. Now Soundwise, I wouldnt say that they sound good. They sound OK, the woofers start distorting mechanically veeery quickly, the treble is not crisp enough and on high treble settings on the amp, they start to sound harsh. With certain songs, they sound muddy too! The enclosure is sealed, they barely have any bass. Not bad but also not great I would say I currently use them as my desk speakers but I plan to get a Logitech Z-10, Philips MC50 or a pair of vintage Grundig Bookshelves, not sure yet what to choose