Hi Kavu,
I was the owner of the Sequerra Met 20's. I sold them in early 2006. They were too bright for solid state amps and just OK with tubes. The speaker was a sealed 2-way with the 50 mm and 150mm Jordan drivers. Both are no longer available from Jordan. When I first heard them, it was on Dick Sequerra's system with $20K tube amps. They sounded very good but didn't pan out in my system.
Jim