17-11-2018, 10:41 PM
Yes but the leads of the phones add capacity before the inductance of the phones. My old high impedance phones have twisted cables of around four feet. I did think this was the case too but looking at the RF it's level went up with a choke and just the phones, adding a 470pf or 1nf made no noticeable difference, I then thought Ah perhaps the resistance of the choke is the reason, it was only 23ohms DC resistance whereas the phones were over 4k so I do believe we need proper RF filtering prior to the phones, rather than a cap damping residual RF. We need all the flea power we can utilize.
