I´ve played around with a Lowther Acousta and a Lowther Fidelio cabinet with these drivers, and they don´t sound the same, but still very close and has the same qualities.

I think they might be from different production lines.

The newest pair had a bit more bass, while the oldest was more musical and mellow.

But still, they are the best speakers I have ever owned, and the build quality is really something else compared to Lowthers.

Regards
Kim