2 pairs of mid drivers on a spekaer ?

Please help me with this

I saw on you tube some speaker with 2 pairs of mid drivers and diferent size horns, I supose to play diferent range of frequency.

I recently found my father´s Le85 with h91 horns

I almost finish my speaker project 4530 with 2350-2446j and 075 tweeters

exist a benefit of adding the Le85-h91 to my speaKer project ? I already have it or keeping for other project ?

2350-2446j- 500-700hz to 20,000
le85-h91 - 1800 hz to 20,000
075 7000hz to 20,000

thanks in advance