It is not easy to answer your question without knowing wich speakers you are talking about?
The usual way to connect is to connect from mixer to sub and from sub to top speakers.
Also in different speakers sometimes there is a switc on the sub and sometimes there are
4 out wich has connection to a sub filter for the top speakers and sometimes that is on the top speakers.
Sometimes there are no filter and in that case I strongly recommend you to buy an active filter
so that you can cut off the lower bass on the top speakers…..
Hands on you will hear if it sounds good or not……