The sens on machines like IGSL or IDX, Cibola etc is partially restricted by the sens of the GEB ch to a target..
As was explained to me,
CH 1) Disc is set to phase align to a target - so is tuned to max sens of a target alloy.
CH 2) Geb is phase tuned a 'off' of the target alloy phase and 'half off' the ground signal to average GND signal out.
The Comparator Stage has a common threshold for both CH's
The Disc CH always gets more target signal and 'trips' thresh, BUT the LOWER SENS GEB CH may not trip the comparator Threshold and so no tone would be heard...
So in this case, GEB CH sens to alloy is a sens bottleneck.
If you could trip the Comparator on the Disc ch only - you would not suffer the sens bottleck associated with the lower target sens GEB CH. - Sure you would have to remove the ground signal from the Disc CH to avoid continuous falsing of the DISC CH.
Would something like this work ???

S
As was explained to me,
CH 1) Disc is set to phase align to a target - so is tuned to max sens of a target alloy.
CH 2) Geb is phase tuned a 'off' of the target alloy phase and 'half off' the ground signal to average GND signal out.
The Comparator Stage has a common threshold for both CH's
The Disc CH always gets more target signal and 'trips' thresh, BUT the LOWER SENS GEB CH may not trip the comparator Threshold and so no tone would be heard...
So in this case, GEB CH sens to alloy is a sens bottleneck.
If you could trip the Comparator on the Disc ch only - you would not suffer the sens bottleck associated with the lower target sens GEB CH. - Sure you would have to remove the ground signal from the Disc CH to avoid continuous falsing of the DISC CH.
Would something like this work ???
S
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