I have a Sennheiser PC 360 Headset. I'm using the Sound Blaster Recon 3D as my sound card. Everything is up to date. I've tried multiple things to get it to work. Nothing seems to get picked up by the mic. I can only set one default device in the recording tab, the others then show"currently unavailable". It is my assumption that this is where the problem lies. The Sound Blaster also comes with a GUI. Anyone have any ideas on this?
More about :microphone work headset sound works fine mic
This may be so obvious, but, have you tried the microphone on another system? another computer? I find it is always good to do that to rule our faulty pieces of kit.
As far the default device section; that shouldn't matter. If you set your mic @ Sound Blaster Recon (or however it is stated) that should be enough, you shouldn't need any other, it is within 'playback devices' where the whole default/other devices section can become tricky.
Another probably too obvious to be true point, the Sennheiser PC 360 has an inbuilt type of mute system, correct? Relating to lifting the arm up? Have you tried repositioning that a few times? Just to see whether it had been set off at all?
Try those things and get back and see what happens, but if it appears to not work on another system AND it isnt muted, for whatever reason, then all signs point to a fault mic.