I don't know of any "new top of the line" speakers that use readily available, out of the catalog drivers throughout. The $20k Magico Mini, eg, uses the revelator but the other driver is custom made. Top speaker manufacturers custom engineer their drivers because the off-the-shelf ones limit their design flexibility. They often have to specify their own parameters which the standard drivers usually do not have in order to produce the sound they're looking for.
Is it possible to build a great sounding speaker with standard Vifa, Peerless and ScanSpeak units? Absolutely. Their websites have cabinet and crossover suggestions and DIY forums have posted every possible combination with results. You're not going to get it right the first time but the learning experience (and fun) is another hobby in itself.
Just be forewarned: one thing DIY'ers overlook is the cost of the power and hand tools needed to make somewhat decent cabinets. A good table saw and fence, router and router table, jointer, drill press, joinery tools, jigs, workbench, clamps, and assorted hand tools could easily be a few thousand dollar hit. And then there are test instruments...
Is it possible to build a great sounding speaker with standard Vifa, Peerless and ScanSpeak units? Absolutely. Their websites have cabinet and crossover suggestions and DIY forums have posted every possible combination with results. You're not going to get it right the first time but the learning experience (and fun) is another hobby in itself.
Just be forewarned: one thing DIY'ers overlook is the cost of the power and hand tools needed to make somewhat decent cabinets. A good table saw and fence, router and router table, jointer, drill press, joinery tools, jigs, workbench, clamps, and assorted hand tools could easily be a few thousand dollar hit. And then there are test instruments...