Hi I have a question for you more advanced DIY guys. I have an older set of Yamaha floor speakers (model# NS-A570) 3-way w/12" woofer. Rated at 140 watt max into 8 ohms. Box Size is about 2.5 cubic foot. The tweeter and midrange look to be 2-1/2" and 3-1/2". The tweeter is using a 5 watt 7.5 ohm resistor and a Luxon 3.3 uf cap. Wired straight trough to the terminal cup (same as below) The midrange uses a 5 watt 6.8 ohm resistor and a Luxon 4.7uf cap. (both caps also say 5.0mv NP) The woofer has nothing on it. All 3 drivers have separate wires connected at the terminal cup. A few Questions What are the crossover points for the tweeter and midrange? ( I haven't been able to figure this out with the resistors in the mix) What ohm woofer would I use 4,8,16? I purchase a set of these http://www.partsexpress.com/pe/showd...number=290-335 And while they do sound a little cleaner than the original ones they do lack some of the bass.( the old ones were dry rotted, and I needed a cheap replacement) Should I have gone with 4 or 16 ohm rather than the 8? I know the box volume is a little to low for this model but it seem to fit the best of the cheaper ones they sell. Will break-in help at all. They have much stiffer cones. Any help is appreciated.