Replacing the binding posts at Magnepan 1,7i

I have bought Cardas CCGR-S binding posts to replace the originals at my Meggie's 1,7i

The hole at original binding posts insulator are too small.

How best to solve that out technically?

Please help I do not want to do any nonsense.

dvinkl11-08-2019 12:59pm

bdp24 Details Discussions Posts This discussion Message User 10,096 posts 11-09-2019 at 11:08am Copy Comment URL Report Comment Edit Delete Yep, I very slightly enlarged the holes in the speaker’s rear plate. On my Tympanis, the hex-shaped Magnepan connectors are secured to the plate with rear-mounted hex nuts; aren’t yours? Yes, I removed the stock insulator and put the Cardas black plastic mounting block in it’s place. It is the short "nubs" on the backside of the Cardas block that are slightly larger than the stock holes in the Maggie plate. Though the Cardas binding posts are usable without the Cardas mounting block, it’s advisable to install the block as it prevents the posts from spinning when tightened.
bdp24 Details Discussions Posts This discussion Message User 10,096 posts 11-09-2019 at 08:34am Copy Comment URL Report Comment Edit Delete The holes are SO close to being big enough for the Cardas posts (the holes are just a hair too small) that a small round hand file run around the hole perimeters for a few minutes will take off enough metal. I enlarged the holes in the plates of my Tympani T-IVa that way. If you ever want to reinstall the stock Maggie connectors, the holes still allow that, no harm done.