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.

I noticed I didn't post the other song I played at that wedding with the pair of db K300. It was an instrumental version of 'You raise me up' with piano, my brand new, breathtakingly real 'Digital Sound Factory Symphonic Strings for Motif' plus Garritan strings section. Again, I recorded it through 'air' via the microphones of my Sony HDR-MV1. So, these different sounds may be interesting again to judge the db K300 speakers.

Have any of you meanwhile bought or tried the db K300, too? - I am currently trying to downsize my PA equipment, as I've collected so many speakers and systems from very small to medium size that it's just too much. But every single speaker of my collection is great, from the tiny Bose Soundlink Air or db K300 to HK Nano 300 they all have great, powerful sound in relation to their low weight.
Having compared the db K300 with some other systems again today, I find they are the most 'clinical' due to their very reserved bass; you could say they lack warmth but on the other hand they are wonderfully clear and transparent and don't distort at high volumes. In case some of you made experiences with them in the meantime, I'd be interested in your opinions.

I think when we get to the point that a 30 pound speaker is too much to handle , it might be time to just stay home and sip tea

Mr. G, that depends a lot on your age and abilities. Though, I am gettin a bit lazy and might just consider sitting on the boat and sipping Margarettas.

Gary

I prefer doing sports outdoors and weight lifting in a gym instead of dragging 30 pound speakers to church weddings where they are exaggerated.
BTW, I consider your answer to my post by far the most stupid answer I ever got in this forum. For instance, what would you say to a great musician who can't lift 30 pounds due to severe back problems? - "Stay home and sip tea?"

There was a time when I would have said exactly the same thing. There will be a time when you may think differently about it too!