Hi
@Dominik Kißkalt, I see you are quite new to the forum, welcome =]
There are a few things I'd like to point out that I'm a bit surprised no one has mentioned yet. Measuring speakers can be confusing, but unless you have an absolutely bonkers room, the end results should not be so different from that predicted from the spinorama.
First thing: How are you measuring the speakers? Are you performing a single sweep at the measurement position? If so, this is very unlikely to be useful. I also notice that you are measuring on top of the middle of a table -- this is a significant problem as you will get a bounce. While yes, this will be audible as well, chances are it's not quite as audible as it looks in your measurements.
In my opinion, the most useful+easy way to measure speakers at the listening position is using the moving microphone method or MMM for short.. See my post
here with a video of the method and brief a description of how I personally use this method. You can decide how wide you want the "listening area" to be, I personally like using a cube about 2x2 feet, or cover a large section of your sofa.
This will help minimize the effects of reflections at a single point that are unlikely to be significantly audible, and help point out the things that might actually be an issue.
Alternatively, you could use a spatial average of say, 7 measurements in a rough area around your LP.
I also second everything
@andreasmaaan said. Most speakers that measures "flat" in an anechoic chaamber or at about 1m should tilt down at 2m or greater.
To be clear, you are definitely free to enjoy whatever speaker you prefer, but I'm trying to help you get a more useful in-room measurement to figure out what's really going on.
As an aexample, here's how the dutch and dutch 8c, one of the best measuring speakers on the market measures when i did a single sweep of the left and right speakers together:
View attachment 88448
Not too great. And here it is with a proper spatial average around my listening position.
View attachment 88449
The latter is much more indicative of how it actually sounds in room.