Heresy IIIs sound great (IMO) and I prefer them to my Heresys (with updated Crites crossovers and his Tweeter now) or to my brother's Heresy IIs (stock)...more bass with the III...
You can get the kits to upgrade the Heresy II to the III from Klipsch...and then they ARE Heresy IIIs...
From Bob and Michael Crites, you can update the tweeter to one of their own design which will go higher than the K-77 (on the Heresy) you can put a titanium tweeter diaphragm in the tweeter of the Heresy II (great upgrade as well) and/or you can update the crossovers to get back to the sound PWK intended but with better components AND get the crossovers off of the terminal cup.
CS-1s are yet another complete modification of the Heresy making them 2 way and no longer Klipsch speakers...
Lots of choices you can mix and match to your taste...
Bill
You can get the kits to upgrade the Heresy II to the III from Klipsch...and then they ARE Heresy IIIs...
From Bob and Michael Crites, you can update the tweeter to one of their own design which will go higher than the K-77 (on the Heresy) you can put a titanium tweeter diaphragm in the tweeter of the Heresy II (great upgrade as well) and/or you can update the crossovers to get back to the sound PWK intended but with better components AND get the crossovers off of the terminal cup.
CS-1s are yet another complete modification of the Heresy making them 2 way and no longer Klipsch speakers...
Lots of choices you can mix and match to your taste...
Bill