18" bass bin design for hi fi

[Eduardocastrejo]

Hi, please help me

I want to build a pair of speakers with some vintage lansing parts

I like the idea of compression style like lascala, also I have the plans for diy for la scala series 1, that uses 15" woofer, I only want to use the lascala bass bin design , I dont want to incorporate mid and high inside the speaker cabinet.

but I have a 18" woofers that I want to use

could somebody can gave me an advice for a good bass bin design for hi fi

thanks in advance

18" 16 ohm woofers with jbl 3115 crossover- I dont know the crossover frequency for the woofer , somebody please help me on this ?
2445 16 0hm drivers with 2380 horns crossover 500hz
2404 tweeter 3105 crossover 7000hz