Vandersteen 2Wq crossover

Once you are sure that the amp's impedance is 50k, Vandersteen offers, through its authorized dealers, the X-2 in-line filter. Cost is around $125.00. If you want to try and find an in-line hi-pass filter elsewhere, you can, but remember you need to match that impedance, and you want a first order hi-pass filter, hinged at 80Hz. A Vandy dealer might lend you the WX-2 so you can try different impedance settings to see what sounds best before ordering an X-2. But the WX-2 is not a very transparent x-over, it is only intended for determining what X-2 you should order. You can also keep an eye out for used X-2s here on Audiogon, but they don't come up often, won't always have the impedance you need, may be balanced, when you need unbalanced, or unbalanced, when you need balanced (do NOT use adaptors from one to the other), and the price usually isn't much lower than list.

Thanks so much for the advice. I'll try Sound by Singer in my area for the crossover.

I don't think Singer is a Vandy dealer anymore. I don't think Vandy has a dealer in NYC. In New Jersey, there are two: Audio Connection in Verona and Audio Nexus in Summit, both excellent dealers. Since there are no local dealers for you, one of these NJ dealers might be permitted to ship you the crossovers.