So I got this RC-3 center off eBay, when it arrived the tweeter was out of place, no big deal just got it back in the horn, next thing I replace my old center with it and there's only sound coming from the tweeter, thought it might require bi-amping so I plugged each input on it but only the ones in the top seem to power the tweeter and the woofers just wont work either bi-amping or using the included jumpers, so I took it all apart and tested each woofer using a AA battery and they both seem to work, so I believe the problem is either the input or the crossover, thing is I've never done any crossover testing, I don't even know what to look for but I've been told they're easy to fix so any info or help is appreciated.
Let me know if you need to see any pictures.