1. these will go down to 45 hz in a PAWO horn, but will have excessive IM distortion, as well as a pronounced high. Crossing them actively at 80 Hz or even 70 Hz, dramatically reduces the IM distortion, and smooths out the highs.

Run this way, they sound very, very good, esp in a msall to medium size room. Of course you need a good sub. I would recoomend subs by Hsu research.

Material: Use 3/4 " to 1 " thinck baltic birch or MDF.
I wouldn't use anything else.
I don;t think these are dust magnets...i have seriousl allergies too.
You have a great set of drivers, Enjoy them!