Ok, the better portion of the JBL 4350 studio monitors have had the woofers reconed. They came stock with 2231H woofers. These cones haven't been available in a long time (I was informed). They recone these to 2235H's. Question is: is the crossover point of 250hz still viable, or do we now cross them at 290hz like the JBL 4355 studio monitor, which came with these cones, although the magnet structures are different???