Lots of speakers from that series/vintage of infinity look the same. OVTR2 and 3 have a built in amp for bass. Turn it past 4 and you'd be drowned in bass unless you're in a open auditorium with a lot more area behind the speakers than in front.
Anyway, some of em 2000 series had the same drivers, as did many others. No worries rs-5 may have been one of those.
Cool.
Srinath.