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For these reasons, and for the more important reason of avoiding low frequency transient overshoot, ringing and phase misalignment, the low filter is a “minimum” type, with a 6dB/octave slope below cutoff. This is quite effective in reducing subsonic woofer-wooble and its attendant intermodulation effects, however, since the most problematic turntable and warp-induced rumble frequencies, in the area of 2-5Hz, are reduced an average of about 20dB or a factor of 100 in terms of power demand. The l