I have a pair of tower wf-35's, i changed the crossovers to put in these new ones i got off of ebay since the old ones blew out. When i took the ceramic compasitors out of the crossover and i connected it directly to my 2 channel amp the ceramic compasitors started to play as a speaker. I thought i was hearign things. It was amazing but it over heated, now i know how it truly works i think that maybe they should make speakers out of a ceramic meterial.