I'm not sure what are you referring to. I thought you meant the BYPASS resistor divider consisting of R86/R87...
When wired correctly, there's no need for an additional resistor on the secondary of the I/P transformer. Depending on the BYPASS switch's position, the transformer always connects to roughly 3 to 4 kOhms which is the input impedance of either the compressor stage or the output stage (when in BYPASS). With a 2:1 winding ratio the input impedance to the outside 'world' is four times that - therefore about 12k.
When wired correctly, there's no need for an additional resistor on the secondary of the I/P transformer. Depending on the BYPASS switch's position, the transformer always connects to roughly 3 to 4 kOhms which is the input impedance of either the compressor stage or the output stage (when in BYPASS). With a 2:1 winding ratio the input impedance to the outside 'world' is four times that - therefore about 12k.