+ to - to roll off above 25K @ 4 ohms I believe. Been 4 years sense I made one up.. They work pretty good. Considering they were 10K + new.
31.7
https://www.instructables.com/How-to-make-a-Transparent-Audio-Reference-XL-Speak/
I made up 10 or 12 pairs. I kept 2. 1 @ 1 meter. 1 @ 3 meters.
You have to increase the hand wound inductor (2.5 mH) in the first part of the network, if you shorten the length. In series on the + leg
Regards
31.7
https://www.instructables.com/How-to-make-a-Transparent-Audio-Reference-XL-Speak/
I made up 10 or 12 pairs. I kept 2. 1 @ 1 meter. 1 @ 3 meters.
You have to increase the hand wound inductor (2.5 mH) in the first part of the network, if you shorten the length. In series on the + leg
Regards