I was just looking thru the installation book and noticed on page 9 this guide speaker. I looked on the Pioneer site but couldn't find much info on it, has anyone bought/installed this and if so, does it work with the bluetooth echo box & guide?

It would be great to install a small speaker in the B pillar next to my left ear for the phone, it might make the speaker phone usefull.

I believe the speaker will only work with the 5.1 Surround processor hooked up. That processor disables the guide voice coming from the front speakers and routes it to the external guide speaker.