input Z of B1

[cygnus x1]

I would like to try to use the B1 as a I/V stage in a CD with the 1541a D/A. I would also like to put a passive filter between the 1541a and the B1, so I need to know the input Z or how to calculate it. Does this seem reasonable?

 

[Nelson Pass]

It's whatever you use for a volume pot if the resistor to ground that follows
is high. You can use 2 megohm for that - it's just a safety in case pot goes bad.

 

[cygnus x1]

I guess if I had read the B1 article, I could have saved you from answering a silly question...did not read it until after I asked the question. Thanks for taking the time to reply.