jobe_smith

Thanks again! I've finally got these back in phase, and now I'm sure of it.

Thanks guys! I'll finally be able to get these woofers into phase and stop worrying about it! I've tried the usual ways mentioned, like playing FM static and deep bass passages, but I could never hear the difference. I'll try the 1.5 volt battery method and make sure that the cone has max excursion at lower frequencies. Thanks again!

I restored a pair of bookshelf speakers (replaced the surrounds and refinished the cones), but when getting ready to reinstall the woofer baskets into the enclosure, I discovered that everything I had done to mark the positive and negative terminals both on the speaker and in the crossover had gone to pieces one way or another. I can determine the points on the crossover network easily enough (it's just a two-way), but the cone has baffled me for the past year and a half. Should a woofer that is in phase exhibit a cone that extends out (max. excursion) at higher frequencies and has less excursion at lower frequencies, or should the cone have more excursion with lower frequencies and less with higher frequencies? This is a bass/mid-bass driver. Any ideas related to this topic or wavelength/frequency/excursion relationships would be greatly appreciated so I can know with confidence that my speakers are in phase.