I'm looking into designing some compact mains for college, where space is tight, and I am considering these Tangband 4" full-range speakers: http://www.partsexpress.com/pe/showd...D=104525&DID=7 They won't be available until August, but I'm looking into this now so I can be ready when the drivers are available. I want to build a pair of thin bookshelf boxes about 6" wide, 8" deep, and 24" high, ported and painted white. There will be 4 drivers per enclosure (with two sets of two drivers wired in series, and then each set wired in parallel) for about 80w RMS and 160-watt max power handling. I will be powering these with a 60w/channel reciever. Is this a wise choice of driver? I think the 3" version of these is used in the Logitech Z-560 THX-certified multimedia speakers. The cone moves, but the phase plug is attached to the backplate.