Hi there i have a pair of Eltax Liberty 5+ floorstanders in a a set with centre/rears/sub Want I want to know is how best to approach the idea of adding another woofer driver to each of the floorstanders. I have a set of 4 identical woofers already in my posession in mind. Do I have to entirely replace the 2way xover for a 3way one? bearing in mind I want both the woofers doing the same frequencies. Or is there some way to just add a high frequency cutoff to the new woofer as this is all there is on the existing woofers section of the xover circuit? Unfortunately the drivers i have are 4 ohms bought originaly just to replace one broken woofer the same as the originals not twice as would have been useful. and how many watts do you think would be needed per channel to hear the difference they are 100 rms to begin with? Not looking to make it louder exactly just a more filling sound without having to turn it up as much.