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CHAPTER 4
Table 4.4: M2D and 650-P (650-P set to pin 2 positive) frequency
response results with LD-1A, LD-2 and LD-3 (160 Hz lter)
Lo-Cut ø Reverse
Switch
Result
Off Off Flat response (small rise on 70 Hz -160
Hz area), -6 dB sub gain recommended*
Engaged Engaged Very at response, -6 dB sub gain
recommended*
* The 650-P subwoofer is +6 dB more sensitive than the M2D and
M2D-Sub loudpspeakers.
In addition to its 160 Hz high-pass lter, the LD-3 line driver
provides additional ltering capabilities (Table 4.5) to help
you further ne-tune an M2D and 650-P system.
Table 4.5: M2D and 650-P (650-P set to pin 2 positive) frequency
response results with the LD-3 (using other lters)
HPF LPF ø Reverse
Switch
Result
Off 55 Off Flat response, -6 dB sub gain
recommended*
80 80 Engaged Very at response, -6 dB sub gain
recommended*
160 OFF Engaged Very at response, -6 dB sub gain
recommended*
* The 650-P subwoofer is +6 dB more sensitive than the M2D and
M2D-Sub loudpspeakers.
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