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People playing with Magnepans may be interested in the YouTube video below from GR Research, where Richie develops an upgraded crossover for them. Some of the discussing about beaming and focusing was interesting to me.

https://www.youtube.com/watch?v=gRMqDb-t9oo

Those are the latest LRS+ model Danny is upgrading the passive crossover.

I agree, the hardest part is removing all the staples to work on the crossovers as I had in the 1.7's.