Paradigm Reference Studio 20--v1 vs. v2?

How much difference is there between version 1 and version 2 of the the Paradigm Reference Studio 20? I know that some reviews of version 1 noted unevenness in the mid treble. Was this corrected?

Thanks in advance for any info.

I thought v1 was a little "hot" in the treble...and transparency was impressive with v2....although off-axis response was poor....
I have had both of these speakers in my little bedroom system and they are among the most remarkable speakers at any price. I prefer them both to the B&W 805 Matrix, Epos ES12 and Spendor SP 2/2, all of which I have owned. To really answer the question it might be good to start with the test of version 1 in Stereophile Vol. 21 #2, Feb. 1998. The "noted uneveness" (good description) that you refer to just begins at 7K, reaching a peak of about +2.5db in the 10K range with continued small, +-2.5db peaks right up to the primary resonant mode of the dome at 23K or so. It may be semantic, but the uneveness is hardly in the mid-treble. It is in the high to extreme treble, with almost all of the chatiness residing in the ultimate octave. This behaviour is usually associated with a resonance, either in the dome, or in the rather prominent metal phase plug. Note that the speaker is dead flat +-1db from about 350 cycles to 6500 cycles; this is mind-blowing neutrality in any speaker and is especially amazing in one that sells for $650.00pr. To see how severe this resonance is just look at the waterfall plot. This test shows how quickly the driver stops after being excited. There is a bit of hash at around 7K, but it clears in less than 1.3 milliseconds. There is some more hash that is longer in duration above 13K, but even this clears quite well. Actually, the off axis response and dispersion are excellent. Probably from crossing the woofer/midrange over so early, 1.5K. The tweeters dispersion and linearity will be excellent at the bottom of its passband and the woofer is probably in break-up mode at the top of its passband. All of this will aid in the excellent dispersion. So, how does it all sound? First, I will say that it has been axiomatic in speaker design that balancing a bit of conceit in the bass with a touch of a rise in the treble will make a speaker sound more balanced than if either of these departures from linearity were listened to alone. And the speaker is up almost 5db at 150HZ with the rise extending from 45 cycles to 400 cycles or so. So the bass hump is a much bigger departure than the one in the treble and actually extends well into the lower midrange. I would also point out that those of us who are entering (ahem) middle age are suffering hearing loss in precisely the area where these speakers have their treble lift. Enough, version 1 has a spiciness in the treble that is evident on all music played through it. It is very even and does not start to splatter as the volume increases, in fact, it is singularly free of this. Younger listeners may be bothered by it, Reina, in the review refers to it as "zippy" and "crisp". Many will prefer the hi-fi quality of detail that it presents, and older listeners may just not care. The bass hump is more noticible. It extends into the midrange and gives male vocalists, cellos and bass a fullness and weight that no speaker this small can possibly have. Along with it comes some chestiness and a bit of hood ing in the lower midrange. It is more suited to solid state because the bass is better controlled and most SS has a leaness in the mid-bass that off sets the hump a bit. The thing also goes deep and loud, shockingly so. As the frequency descends definition suffers but the weight remains. The center of the midrange sounds just like it measures, very even with good off-axis response. To answer the original question, version 2 corrects the spiciness in the treble, though the slightest trace remains. The bass also seems to be a bit more even. The speaker comes off as even more shockingly neutral. But V1 has a bit more drama and give from its greater colorations, a subjective assessment at best. The differences are very subtle, but you will prefer one over the other. I prefer the original but would never say that it is the better speaker. BTW these are by far the least colored speakers in the Paradigm line. Happy hunting.
V3 is being released soon..Why not wait for them?