Would like to know more analog crossovers similar to Fostex EN3000 and EN3020

recently i discovered a sony that i had no idea of the existence, it's not the one from esprit series, this one: Sony mu-c031

http://www.hifido.co.jp/KW/G0106/E/850-50/C02-13152-13313-00/

i think this one must be more difficult to appears...

cosmicjazz@ let me give some advice , i dont think you need this complicated unit with adjusting crossover point , crossover slope etc. the is more for DIY guys, if you want to finish you project  instead   spending
time on this forum or online. and enjoy to listen nice music on you 3 way 
active crossovers speakers , instead  play games   adjusting  crossover, you need 3 way  prefixed active crossover  https://www.xkitz.com/collections/active-crossovers-and-bi-amplifiers-1/products/linkwitz-riley-3-way-active-crossover-fully-assembled-xover-3 ,  for choosing amps i also have suggestion , but you need somebody to help you ( DIY electronic guy) 

@bache 
cosmicjazz is intended to DIY a pair of 3 way horn Fostex speakers using active crossover : 

https://forum.audiogon.com/discussions/this-multi-amp-active-system-will-work-take-a-look-at-my-plan...

Look like the recommended passive crossover is 6dB/octave on high and 12dB/octave on low.

Looks like this guy  is looking something that he dont know. 
he wants to open more discussion to get more answer , but it does not work. If he will be alone without any knowledgeable help guy ,
THE DREAM never come throw,   

Thanks for the top about the SUBLIMEACOUSTIC