RSRecords said:
Thanks! how are you creating the -6dB attenuation? Would love to see a drawing if you wouldn't mind, even if its just gain blocks. or maybe an equivalent schematic. (I really feel like I'm overthinking this.)
Just an inverting opamp gain stage:
https://circuitdigest.com/sites/default/files/inlineimages/inverting-%20opamp.png
Set Rin to a fixed value and put a variable pot or stepped resistor in place of Rf
Lets say Rin = 10k and Rf is a stepped resistor going from 5k to 20k
Rf = 5k : 5/10 = 0,5 (equals -6dB)
Rf = 10k : 10/10 = 1 (unity gain)
Rf = 20k : 20/10 = 2 (equals +6dB)
A "global" +6dB boost can be archived by putting another 10K resistor in parallel to Rin, making it 5k in value.
Rf = 5k : 5/5 = 1 (unity gain)
Rf = 10k : 10/5 = 2 (+6dB)
Rf = 20k : 20/5 = 4 (+12dB)
Just remember that your signal has inverted polarity after this stage, which you will have to compensate by putting another simple inverting unity gain stage after it. In my case the stage is followed by a THAT1646 balanced driver and I just swap the + and - outputs.