Stereo Phone Mic Sounds Awful - Please Help

I just purchased a Pioneer AVH-X8500BHS stereo and for the most part, I love it, but people are telling me that the sound quality sucks when I talk to them on the phone, via the stereo. I moved the microphone around several times, and ended up installing it on the upper console, but I am still getting complaints. Do the factory stereo microphones just suck, or is there another reason why the sound quality sucks? This is a top of the line stereo, so I don't get it. I even made sure to keep the mic away from the A/C vents. If it is the microphone itself, then what are good mics to consider? Thanks for any assistance.

 

Maybe hit up pioneer for a replacement or check the connections.

 

I have to pull it out this weekend to install the steering wheel control module, so I will double check the connection. I was curious if others were experiencing this same issue and if it was just a known issue that the stereo manufacturers send out cheapy mics.

 

I use the mic that came with my Sony head unit and I had to move it a couple times in the beginning. I used a clip to attach it to the front of the headliner above the rear view mirror. I haven't got any complaints about sound quality since I put it in that location. Some head units have mic gain adjustments too. If your Pioneer has that, it could help.

 

I too was going to suggest running it up your A pillar and then attaching it to the edge of the headliner.
I use the same position for my glass break sensor on my Viper alarm unit