Not too bad to be honest. I was a bit concerned at first. How loud before drivers start breaking up? When distortion starts kicking in? Can drivers not really designed for CB handle it? You know, basic concerns.Now this is not something you see everyday!
So...how do they sound???
To answer your Q. At low listening levels..... say 65-70+ dB it sounds very nice. Impressive bass, good speed and imaging. Soundstage suffered a bit. Which isn’t great since LCDX aren’t strongest in that department.
Pushing it above 75dB creates some issues tho. There’s not enough space/dampening to control drivers the way I would like. Piano sounds compressed. Clarity suffers. It gets busy and less coherent. But there’s potential with different shape/tuning IMO.