[sdiy] General Mic supply question

[metasonix]

>a) the "general accepted" phantom supply is +48V, fed through 6K8 resistors
>b) I think there is some industry standard (IEC?) for this.
>c) However, I've seen *many* non-48V supplies! 

And those are bad, because many mics will NOT work with them!

> is the +48V a worse-case thing with 300ft of snarky Hosa cable? Can I
>use say +24V, lower feed resistors and be happy with powering only 50ft of
cable?

No, it has nothing to do with the cable. Some mics will work
with 24v, but some won't (and I don't mean tube mics).
Use 24v at your own risk.



uncle eric
metasonix.com