Rok2id..The reason for the higher cost for the LSiM series is that the components in the crossover boards are of much higher quality and cost more. All drivers are now made in house which increases labor costs.Their midrange driver is more sophisticated then previous designs, and the cabinets with there internal isolated chamber's for each of the
drivers result in more wood and labor time. Previous full range models from Polk could not compete against the top models from B&W, Wilson and KEF. With all new driver designs and crossovers, and all wood cabinets instead of
just wood side panels, result in a whole new performance that is true high end sound at its very best. Polk makes only 15 pairs a month of the 707's. The LSiM series make's Polk the reigning King of the very best high end budget speaker's in the U.S.
drivers result in more wood and labor time. Previous full range models from Polk could not compete against the top models from B&W, Wilson and KEF. With all new driver designs and crossovers, and all wood cabinets instead of
just wood side panels, result in a whole new performance that is true high end sound at its very best. Polk makes only 15 pairs a month of the 707's. The LSiM series make's Polk the reigning King of the very best high end budget speaker's in the U.S.