Robert
Tapehead
TBH I was never a fan of that Focal inverted dome tweeter they used so diffusing its output in that way was quite a good idea. I think I'd have just changed it!
It sounded a bit better IMO than the later titanium versions which are a drop-in fit but about 1db more sensitive. Very similar response with only minor x-over tweaks.
I experimented with an isoplanar replacement for a while which showed promise, then fell in love with your least favoured speaker of all time so the experiments stopped
Still have my H2s though. Nothing quite does sonic fireworks and stunts in quite the same way. Actually that is unfair, they are excellent in most departments but thrilling in one or two areas.