I know of a center that matches well with the Fostex single drivers. The speakers are made by BC Acoustiques.
I have their AXE center channel now. I made a mistake while doing some measurements and blew the SEAS midrange driver.LOL
When I used the Omega 8s .I've mistakenly left the center on. It matches them so well I would have to get up and go over to the speaker to make sure it wasn't playing when I listened to music. The BC speakers use a Fostex super tweeter. This maybe the reason why it matches so well.
Good luck
I have their AXE center channel now. I made a mistake while doing some measurements and blew the SEAS midrange driver.LOL
When I used the Omega 8s .I've mistakenly left the center on. It matches them so well I would have to get up and go over to the speaker to make sure it wasn't playing when I listened to music. The BC speakers use a Fostex super tweeter. This maybe the reason why it matches so well.
Good luck