但原文中有两句话:
“Most of the upper-bass rise is an artifact of the nearfield measurement technique; the Focus 140 is pretty much maximally flat down to 60Hz, with then a fourth-order, 24dB/octave rollout. ”
看最高的黑线,其叠加后的低频在50-60Hz有6dB的隆起,Stereophile对此的评价是:“Because of this peakiness, the Sophia's overall output in the bass is boosted somewhat in this midbass octave. This woofer tuning will lead to problems in some rooms—Martin Colloms noted a problem with it in his review of the Sophia in the May 2002 issue of Hi-Fi News”