Sound Dynamics 300Ti MidRange replacement?

Surround is going on a Sound Dynamics 300Ti midrange driver (4.5"). It would be amazing to find a direct replacement for the item.

Anyone with knowledgeable suggestions?


I have a pair (complete speakers in black) that I would let go cheap.

Sorry if this isĀ inappropriate
Thanks roxy54. I'll do that.
And thanks philjolet. I'm interested and will contact you off-list.