Danny improved his line array designs, sold on AV123
http://av123.com/index.php?option=com_virtuemart&page=shop.browse&category_id=36&Itemid=37
$6k/pair is a pretty good price for 'store bought'. If this was in a store only, it
would cost double easy, perhaps $20k/pair.
He claims that BG made custom Neo8 drivers for him. He asked them to mod
the existing design to improve some issues. I haven't seen any measurements to
confirm what the mod offers.
For DIY you don't have to follow that recipe. A BG Neo3 tweeter array would
be better, it's just a better tweeter. But because it's small, you need more to
make a big line.
... and the stock BG Neo8 isn't a really great driver.
For tweeter arrays; sorted by price
25 cent - $1 mylars
$4 dome
$35 PT2C planar
$40 Neo3 planar [i would use non PDR]
$60 Neo8 planar
??? Neo8 Danny's custom
$118 Fountek NeoCd2.0 ribbon
... etc ... the list can go on ...
I know someone who did extensive torture tests recently with many drivers
and the Neo3 [no PDR] might be the new winner, in spite that I didn't really
recommend this before. It will cost 2x more than a PT2C array which is pretty
dang nice, but if you want to push the limits higher than PT2, the Neo3 array would be the winner.
It even seems that it has an edge on the more expensive Founteks.
If you don't crank the tunes like crazy, the true ribbons are a proven
winner, they are just delicate drivers, becareful. There are many good Fountek
arrays, but if you want to crank up the tunes hard, the planars are hard to
destroy vs. true ribbons.