Scott, I do not feel the sub from the z2300 is a good addition to my JBL 10’s. The JBL 10s have a good amount of bass so anything added has to be stronger than the Z2300 sub – like the Z5500 sub which you already have.

I have the Bose 161 speakers hooked to the Z2300 sub, they sound great. The speakers on my KN7000 are good, when I add the two Bose 161 and the Z2300 sub I feel it could carry a group of 80 people without a problem.

I would love to hear the JBL 10s, and the Z5500 sub, that’s up about five notches.

John C.