Internal Crossover for center channel speaker?

[GetOwnedGaming]

I have a polk audio center channel speaker that im fixing for a friend of mine. All three speakers work when powered individually (2 mid range, 1 tweeter). So i've determined the crossover is bad. Only I cannot figure out for the life of me where to, or which crossover to get as a replacement. Any advice?

 

[JoeMomma]

Parts Express
Great prices, selection and customer service.

https://www.parts-express.com/

 

[GetOwnedGaming]

Parts Express
Great prices, selection and customer service.

https://www.parts-express.com/

Thanks!