u should not have to do that, ur signal is most likley around 14 - 17 at the gb. u can use a 8 way there w/ 1 port going into a 15db amp , from the amp go into a 4 way and each leg will feed a 8way. total 8 ways (8)
This is CABL.com posting #195292. Tiny Link: cabl.co/mYX2