I am looking for a device that will downmix a 5.1 HDMI audio stream (LPCM, DTS, and/or Dolby Digital) to either a 2CH stereo mix or a mono mix.
Here is my situation. I have a home theater/gaming PC that I use to watch TV and movies on my TV, but I also use it for gaming by connecting it to a monitor and a 2.1 speaker set up. I have an HDMI cable carrying 5.1 audio coming out of the PC and being split, one goes to my AVR that can decode the surround sound then passthrough the video to my TV. The other goes to a small HDMI to HDMI + R/L RCA box. The HDMI out goes to my monitor and the R/L RCA goes to my PC speakers. This has worked for a few days until I realized that I do not get my center channel audio, so the box does not downmix the audio, it just strips the left and right channel. For the most part, this isn't an issue, however, there have been a few instances where the center channel has been used and I have't heard anything.
So ideally I'd like to replace the HDMI to HDMI + R/L RCA box with an active device that will actually decode and mix down the surround sound and output a mix of the left, right, and center channel (or all 6 channels).
Can someone help me out here? Does such a device exist or I am searching for Big Foot? Thanks for any tips.