Axiom Home Page Forums General Discussion Technical Questions How to wire a vintage AX120 Subwoofer

If you don't want to take the back off there *might* be an easy test...

Hook up the speaker wires from your receiver/amp to the top left/right terminals, play something with some bass, then move the wires to the lower left/right terminals and play the same track again.

My guess is that one of those hookups will give a lot more bass than the other -- the "more bass" hookup is the one you want. The other one should provide less bass because the high pass filter is blocking bass from the subwoofer (rather than blocking bass from your mains as it was designed).

You could probably test with just a single channel and get the same results.