The PEQ3 version of the plate amp, which is the version that is supplied as standard with this sub, provides an LFE input which removes the sub’s filter from the signal path. Have you considered purchasing that version?
Also, when providing bass managed inputs to the Line In connections of both the PEQ3 and the PEQ (non-"3") version of the plate amp (the latter does not provide an LFE input, providing 80 Hz high pass filtered line outputs instead), the corresponding manuals and the rear panel markings appear to recommend setting the sub’s filter to 12 db, not 24 db. That would seem to make sense, as having two 12 db low pass filters in the sub’s signal path would of course come closer to being complementary to a single 12 db high pass filter in the signal path to the main speakers than the 24 + 12 low pass alternative that was cited in your question.
Regards,
-- Al
Also, when providing bass managed inputs to the Line In connections of both the PEQ3 and the PEQ (non-"3") version of the plate amp (the latter does not provide an LFE input, providing 80 Hz high pass filtered line outputs instead), the corresponding manuals and the rear panel markings appear to recommend setting the sub’s filter to 12 db, not 24 db. That would seem to make sense, as having two 12 db low pass filters in the sub’s signal path would of course come closer to being complementary to a single 12 db high pass filter in the signal path to the main speakers than the 24 + 12 low pass alternative that was cited in your question.
Regards,
-- Al