FULL RANGE

摘要

Estelon's web site says very little about the design philosophy of company founder and designer Alfred Vassilkov. But our measurements [p45] suggest that he has an interesting and unusual design approach, in which the midrange driver is tasked with reproducing as much of the frequency range as is possible, probably to achieve the prized seamlessness of the best full-range drivers without the worst of their compromises. Although our measurements don't specifically identify crossover frequencies, the XB's 61/4 'midrange' unit operates from around 100Hz up to crossover to the tweeter. Compromise is inevitable though - at crossover to the tweeter there may be directivity issues, and at low frequencies the driver may run out of excursion capability when pushed hard. And when this does happen, of course, the resulting nonlinearity will affect a large part of the audible frequency range.