GSM

So my background is in AR (Acoustic Research) stuff...BUT I came across a pair of these Heresy II speakers. They appear to be a matching set and are nice units overall...but take a look at the two photos closely. The tweeters are different! Does anyone know what the "PURE TITANIUM and the info GT-338 on a little red tab" is all about on the other tweeter? Possibly a mod from another speaker cabinet...adapted to this cabinet? ...and by the way, appears to be mounted upside down? Also I've never seen woofers like these...almost a plastic like cone material...with a logo of some kind in the middle? Any help greatly appreciated!!!

So my background is in AR (Acoustic Research) stuff...BUT I came across a pair of these Heresy II speakers. They appear to be a matching set in (I think the light oak) and are nice units overall...but take a look at the two photos closely. The tweeters are different! One cabinet has one tweeter...the other a very different design. Does anyone know what the "PURE TITANIUM and the info GT-338 on a little red tab" is all about on the other tweeter? Possibly a mod from another speaker cabinet...adapted to this cabinet? ...and which appears to be mounted upside down? Thanks so much Gary