Jim, the 4 reviews are from customers who bought from Thomann directly (largest European online store based in Germany. Two of the 4 reviews are with text, but both in German. You can call them up. If you can't get a useful automatic translation from Google, I could briefly summarize them for you.

I was lucky to get a pair of these speakers for 200 instead of 300 euros each, just before the sudden price increase.

Regarding my recording, I felt that the recording overemphasizes their bass a little (probably because my recorder sat quite low on a chair with a cushion). They go down to 70 Hertz, but the bass is very reserved, their strength is extreme clarity and power in the mid and upper frequencies. But bass doesn't make them distort at all, they handle everything very well and just cut low frequencies away before they cause them trouble. And their manufacturing quality is excellent (manufactured in Italy). - As they don't sell in high numbers, there are not many reviews. You could also look into the reviews of their other models K162 and K70, which are less powerful.