On Mon, 2009-07-13 at 09:50 +0100, Daniel Drake wrote:

We have a choice of 50% or 80% microphone bias on the 2 microphone ports (one inbuilt, one socket for external devices). Any suggestions on which one we should pick or how to decide?

For the external devices, it tends to depend on the headset. I would suggest going to eBay or a random computer shop and getting a few different ones. Some may require 80% to produce a usable signal, particularly the cheaper ones.

We can't hear any difference between the 2 settings..should we choose 50% for potential power savings?

If your internal mic works fine on 50% bias I would keep it there, yes.

Daniel

Regards, Tony V.