x2, but i think i have already expressed my feelings towards them.best bang for the buck = REVS!!!!!!!!!!!!!!!!!!!!!
i think one is an oversized speaker, or might fit different bolt patterns. look at the tsd-160r's,those are the revs. that is the speaker to have in coaxials.What the hell is the difference between the TS-A1370R and the TS-A530P?