im running mb quarts 218.61Q comps up front and mb quarts rkc 116 coax in the rear ... the amp is a rockford 750x putting out 90 watts RMS x 4 at 4 ohms.

now im adding to it ... a single JL 10w7 ... the amp is JL 500/1... the box is sealed.

Do i need a capaciteror for this set up??? and as you can see im not all that familiar with car audio.. so what else do you think i need to complete this? any comments will be helpful ... thanks in advance.