I’m trying to model the 4344 MKII network’s MF section so I can see the effects of any component changes. I took the forum’s advice and got a student/demo copy of PSpice and entered the network schematic and the 2123H’s equivalent circuit. (I couldn’t find an L-Pad in the component library so I used two 8-ohm resistors and set the top one to 0.1 and the bottom one to 0.9 to get 90% full scale.) Does this look right?