Very advanced design for its day. The 31.0 dB SPL @ 10 cm worth of noise measured by S&R would be concerning me a bit though... you'll be well in midfield terrain before that disappears, something like over 2 meters in a heavily damped room.
What happened to Event anyway? They were sort of a well-known name in the 2000s.
Their story lists the Opal as their last major coup, I guess they're still quietly churning out Opals down there in
'straya in hopes of eventually recouping their investments. Or maybe not - the one Australian dealer I could find listed them as
discontinued, so I guess Thomann's may be existing stock that isn't exactly flying off their shelves (sort of a given in this price range, they're basically as much as Neumann KH310As which are 3-ways or Genelec 8350APMs which have GLM support)
.
The distortion levels are cursed, what the hell is 10% third harmonic distortion at 200Hz??
Edit: okay they’re using some weird scale shenanigans, it’s 1% third harmonic distortion, far from state of the art but not super bad.
That looks more like -48ish dB (~18 dB + 30 dB), i.e. ~0.4%. Basically the entire midrange >400 Hz is better than -60 dB (0.1%).