2whldreams 0 Posted October 24, 2013 Greetings, This question is in reference in adding two microphones and improving the video quality to my Defender Sentinel System-8 cameras,1TB, Model 21101. Each camera has two wires; 1 wire (BNC, yellow) to the DVR. The 2nd wire (RCA, red) connects to a 4 into 1 splitter to a 12v power module. The DVR back panel has ONE audio input. Can I purchase a 2 into 1 splitter for the two microphones I want to install, or am I limited to just one microphone? The video playback on my CRT TV is marginal (RCA input only). The Defender DVR has a VGA connection. Is there a VGA to RED, WHITE and YELLOW cable, and if so, would this improve video quality? Thank you in advance for your time and expertise. Share this post Link to post Share on other sites
prowlersg 0 Posted November 11, 2013 You need a mixer if you need to combine the two source of audio into one input. Share this post Link to post Share on other sites
Securame 0 Posted November 11, 2013 If you wish to have decent video output, get a monitor/TV that has VGA input, and use a VGA cable. A VGA to video adapter would serve, but you would be losing quality (and it would only output to the yellow cable; red and white are for audio, and VGA output does not carry audio). You could record 2 audio feeds in one channel, but it would be a bit of a mess. Share this post Link to post Share on other sites
