I'm not sure if you guys are aware of this already or not, but I think it's an awesome deal for DIY and non-DIY.
http://home.comcast.net/~jhidley/index.htmlFrom the link above, NHT XdS monitor and XdW subwoofer are being sold at great discount (I already ordered 2 XdS and 1 XdW). The catch is that you have to build/buy a x-over for the XdS monitor because there's no XdA unit available.
The x-over plan is available here -->
http://home.comcast.net/~jhidley/XdS-data.zipMore info on the XdS monitor here -->
http://nhthifi.com/current/products/vintage/xds.htmlThe M-60 also looks interesting.
XdS passive x-over:

Maybe someone can give recommendation in building an outboard passive x-over or maybe using an electronic x-over.
--
angelo