Acidic Dreams...Lotus is revising the Reference set and new drivers will be here shortly, thats why you see lots of Reference sets for sale- out with the old, in with the new.
The Germaniums on the other hand are new and rare, kinda exclusivity factor going for them. The lengendary Cal25 silk tweeter- but better- they chambered it,lower FS-great sparkle , very dynamic silk tweeter. Copper in the motor of the mid. And an xover thats amazingly flexible- kinda lets you keep it simple and just crank some serious power to them.
As I posted on ECA..
The x-over gives you the ability to adjust x-over frequency for the midrange and tweeter individually at 2,200 Hz, or 2,600 Hz. You get to choose from 4 different levels for the tweeter, Direct Loud (recommended for kick panel operation in floor space), Linear Balanced (for installation outside of the direct listening area), Middle Optimum(recommended with the installation of the tweeters directly in the listening axis and/or ear proximity, e.g. A- or B-pillars.), Reference Soft (similar to Middle Optimum but the level drops continually by 2dB per octave. You can also disable the PTC Tweeter Protector, you can replace the halogen bulb with a silver wire jumper.