E-1020 50 100 200 500Hz405060708090100SW-201m Frequency characteristicsFig. 1 shows the frequency characteristics of the subwooferwith each position (HIGH/LOW) of the HIGH CUT switch.HIGH CUTLOWHIGHVOLUME0 I0Fig. 2 shows the optimum volume level with the HIGH CUTswitch at the HIGH position, and the frequencycharacteristics when the subwoofer is combined with atypical 3.5” or 4” (8 cm or 10 cm) acoustic suspension, 2way system main speakers.Fig. 1Fig. 2Mainspeaker’sresponse20 50 100 200 500Hz405060708090100HIGH CUTLOWHIGH CUTHIGH