Thank you, that makes sense. I will build this circuit and analyse its output. From there I may include a lowpass filter as you said powered by the 15V DC and have its output capacitive coupled. Thanks for your help, I will update you on the build resultThe White Noise CL circuit you found will not work. It was poorly copied.
I found a copy of it that is correct.
Since it has only one battery then its output always has a DC voltage on it. If you do not need the output frequency to produce random 0V then it can have its DC output capacitive coupled to an amplifier IC and the lowpass filter circuit that can also be powered from the 15VDC and also have an output coupling capacitor..