Interestingly after a bit of experimentation today I wonder if it's more to do with off axis listening?

They are set up in a relatively small space and I have a rising desk so when in its sitting position the speakers are quite high up, I would say the tweeters are about 2 feet above my head. IN standing they are straight on. IN straight on they seem fine.

I need to find a way to angle them down a bit more to me. Not worked that one out yet, they are very heavy for their size. They are on traditional speaker wall brackets right now which are angled down but I dare not go any further out they are likely to topple.

I note they have these mounting plates on the back, but I cannot find anything sensible on line that would fit these? Thing is they need to come out a bit, they are currently about 20cm from the wall.