Believe me, Ive read your theories on these new speakers before, I fully understand your position. I just find it funny you chastize someone for speculating about the sub (in a positive light) because they know nothing about the specs, yet you miss no opportunity to speculate yourself. Even in this reply, where I did not question your guesses, you go on about them. You even state you've never compared it to the old one, then the very next line you do. For all I know, you are exactly right. I suspect you are actually. But don't bite off someone elses head for doing the same thing you are. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
my "guesses" are based upon knowledge I have about the MX and the XXX... both of them
they use the same cone as the old XXX's used... the coil likely is 2-3x heavier than the old one used (just using split coil over XBL2 will add a lot... then add 50mm one way and you have a VERY large coil)... the spider is heavier... the surround is much heavier...
all that only leads to one place... efficency losses.... no matter how you look at it
had he made a point such as "this has so much more excursion than the old one and therefore would be better" I doubt people would have jumped on him like they did
I never said it wasn't possible I'm completely wrong... maybe RE dumped their old super durable cones in light of a much lighter paper and sacrificed a "rocking free" perfectly balanced moving mass structure... I just have a good feeling they didn't do this //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
just looking at the speaker you realize how much Sd is lost from that at least 1.5" wide 1/2 roll surround... probably down to most 10" subs
the only way to get back to beat the old XXX is to gain efficency (which .... unfortunately I don't see happening) and have 50-60mm one way... and both of these ways would simply TIE the old XXX in maximum output... not actually best it "by a super large margin that would show the JL w7 who's boss"
anyway... more than I wanted to get into...
Maybe I told him to wait for specs because of how UNLIKELY it is that it significantly bests the old XXX