My auditions with Def Tech, after listening to KEF Q950 and R900, were... interesting.
I used an analogy the other day from my Fine Dining experience and Wine training... some may be familiar with Turning Leaf... a very mundane grocery store brand that always seems to win competitions with mediocre juice... A Somm I knew explained that the judges for these competitions are tasting way more wines than their palette can handle (3 is the usual number for critical tasting... and we're talking 20 wines here!). The trick is leaving a bit of residual sugar in the wine after killing fermentaion. So somewhere in the process of tasting 20 some-odd wines, well after their palettes are shot, when the judges look back on what stands out they remember the one with a little sugar in it!
To me, that is what def tech is. Powered woofers sound way better than any other speaker in the room! And anybody not in the know gets snookered in!
Like I said, I had just come from auditioning KEFS, and had another KEF R Series, ML Motion 40, B&W 603, and the DefTech 9060 in this case. The KEF sounded OK... not as expansive as in the other shop... The B&W sounded anemic... the Motion 40 sounded good, and then the Def Tech was like, "Oh Wow!" Then I asked, and he said they were the DTs and the woofers were on and powered. Night and day! So I let him switch through a couple more times and neither the B&W nor DTs sounded good, the more I listened.
Went into another room and was blown away by the Motion 60XTs. No competition. I still didn't buy them.
And those two brands, Def Tech and B&W bedevil me!
@everettT nailed it with the Fan Boy comment. Frankly its true for both. I haven't listened to the upper echelon of the B&W offerings, but that 600 tower had nothing to offer [me]. I don't 'hate' either, but they don't make sense. I had a separate opportunity to listen to the 9080 and felt the same way after listening to it.
Not my glass of wine! *shrugs
(Oh... and that claim that the 9080s hits 16Hz??? Was it Stereophile? Bench tested -10dB @ 20HZ IIRC? According to the graph they posted, that might be generous, assuming it was plotted accurately.)