The ALK crossovers also sound a lot better to my ears than the original crossovers in my Cornwalls. They are a far more sophisticated design than the originals that was developed using modern crossover design and speaker testing tools. Unfortunately they are quite a bit more expensive to build because they use more parts and higher quality parts than the originals.Those you're looking at are especially attractive, but I can only imagine how much the marble and acrylic added to the cost.