I used my NHT 1.5 mains and my NHT center channel (that was supposed to be the matching center) for years with a Yamaha receiver that had no equalizer functions, and they sounded different from one another. If a sound passed from left to center to right, I could tell the difference in timbre. However, once I bought my Pioneer receiver and ran the auto-setup that includes some equilization, the speakers match great. It sounds soooo much better to me.
You can always ask the dealer, but I think the two speaker lines would work together, especially if your electronics can do some equalizing.