| Originally posted by mikelevitt |
I just picked up an old AKG 451 E. It's a very early version set up for 12v phantom power.
AKG suggests that to operate with 48v phantom, the two caps which are connected between pins 2 and 3 and ground should be swiched from the present 16v 22nf, to 100v 22nf (.022 uf).
I went to the local radio shack, and they didn't have a 100v .022 ceramic caps. They did have 50v .022 mylar.
Will this work? Have any effect on tone?
You'd be surprised at how wide the disparity is around the 48v phantom power voltage... some OEMs use voltage multipliers and other unregulated sources of the necessary juice and it can often rise well above 50 volts.....
Radio Shack is not the best place to get components from and you would be better off finding the components on the web at places like Mouser or Digikey.
As a general rule I would always obtain the component that the manufacturer recommends though I will admit my brow furrowed when I saw mention of ceramic capacitors. Those beasties belong in computers and the like and should not be associated with audio paths....
But there again, I'm giving advice and contradicting it at the same time! I guess that with any rule there will be exceptions!