Hi-Vi Research L6-4R Woven Kevlar Cone Woofer with Phase Plug
The 6.5″ woofer is a real sleeper. It is rather inexpensive but gives a very nice punch in the bass and the midrange is very open.
This had ended up in two different kits so far – the “Blues” by Matt Sobie and the “Spitfire” by Paul Carmody.
The cone material is woven Kevlar with a rubber surround and is housed in an aluminum basket.