TGMcCallie 0 Posted February 9, 2015 My NVR camera system has an audio in and audio out port. I would like to hook up a speaker to the audio out port. I will wire it with Cat5e wire. Can anyone suggest a speaker to use. I don't want to spend over 50.00 for it. I want to be able to talk to someone at the front door through the NVR Camera system which has a microphone wired along with the camera at the front door. Share this post Link to post Share on other sites