I don't know what the EQ that you have is to answer the question correctly according to the documentation that's available in the 4BX manual. If you don't have the manual it is available here.
https://www.manualslib.com/manual/1936693/Dbx-4bx.html#manual
Look at page 14.
Since I have the dbx200x (program route selector) it afforded me the opportunity to do a little research. One would have to determine if the EQ is an Automatic EQ or, for lack of proper terminology, a normal Manual EQ.
In the dbx200x manual is this usage note section. Also read the Dynamic-Range Expanders section.
I think that the JVC SEA-M9 is an automatic EQ so it should go b4 the dbx4BX in the signal path.
Only my suggestion.