Decided to connect output of Filters directly to signal pin

Set out to test to test RC filtering on actual circuit, with a focus on using is for Sub-bass frequencies as for frequencies below 45 Hz it is flickering is clearly visible, however,

When signal pin is not connected to anything (i.e. Is floating), Vsig = 0.13V
- Same behaviour when the signal pin isolated from audio input by a diode
When signal pin is connected to a grounded resistor, value of Vsig is none zero and is dependent on the resistor value
- Hard to measure voltage of Vsig in this case because it is so low that my oscilloscope can't accurately measure it (resolution of my oscilloscope is 1mV, and the noise of the measurement exceeds that), and neither could my multimeter as when I applied leads it actually increased the voltage across the resistor (I know this because none of the LEDs would light up when the resistor I connected between Vsig and ground was 2.2kohm and Rhi was set to 300-450mV, then when I applied the leads at least one of the LED's would light up
- When R = 100 kohm, two LED's would light up, Vsig was 0.013V
- I set Rhi to 8.8mV (Using a voltage divider of 100 kohm and 100 ohm), connected Vsig to a grounded 1K resistor, voltage at Vsig = 0.1mV, ad yet all of the LED's were lighting up...
- There may be some parasitic voltages or something going on, so I'm just LM3914 vs LM3915 vs LM3916 - What are the differences? was able to successfully use a diode and RC filter at signal input

Don't have time to test this out, so I'm just gonna connect the output of all the filters directly to the Vsig of the IC's

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