I have looked the schemetics for the 2.6's and building crossover shouldn't be a big deal. I just ask myself why would you want to do that to a pair of 2.6's?? They are really pretty old(even though they are fresh returned from the factory) they were made from 90-94. Using the equipment your using I would start with a newer pair of magnepans. I would sell the 2.6's and get a newer model more in line with the rest of your gear, i.e. a model that uses a true ribbon tweeter. If you have your heart set on keeping them you could build new crossovers, the design appears to be a little complicated for a two-way desing, but is by no means hard to build. Many things changed on magnepans over the years, the drivers have improved as did the crossover's design. In short I think any money invested in 2.6's would be impossible to get back out of the speakers and you still have- at the newest- 10 year old technology.
Gmood1- I have not experimented with different designs just different components. I know two different people who have tried altering the original designs and they had zero luck and strongly recommend using the original schmetic and sticking with it- one of these people is George Cardas. I have heard of people trying to raise or lower the crossover points on various magnepans and all have had very bad results. I think you would have to have a very good understanding(much greater understanding then I have) of crossover/speaker design to implement a new and improved network. Not saying it can't be done, but I don't know anyone who has had any luck.
Gmood1- I have not experimented with different designs just different components. I know two different people who have tried altering the original designs and they had zero luck and strongly recommend using the original schmetic and sticking with it- one of these people is George Cardas. I have heard of people trying to raise or lower the crossover points on various magnepans and all have had very bad results. I think you would have to have a very good understanding(much greater understanding then I have) of crossover/speaker design to implement a new and improved network. Not saying it can't be done, but I don't know anyone who has had any luck.