I hope to god its not a problem with the receiver. While your menu may be slightly different, the procedure is basically the same. Maybe most SD channels are being output as two channel PCM, hence the difference? Cloudflare Ray ID: 5f8f72313dd101e9 I would think so. http://www.bswusa.com/proditem.asp?item=SLM100, http://www.audiophilia.com/hardware/spl.htm, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. If you are still having difficulty with the rear speakers on your surround sound system, the next step is to make sure that their levels are not severely imbalanced. I am running 2 JBL 5" bookshelf speakers as my rear surrounds, and two of the same 5" JBL monitor bookshelf speakers for my rear surrounds. I am running a Yamaha HTR-5990, and I have a full JBL speaker setup. I am running a Yamaha HTR-5990, and I have a full JBL speaker setup. Review the manual from p.52 thru 57. If your still not getting signal to the rear speakers, you have little else to do but to buy a speaker with the newest technology (powered by Atmos or Sonic) or buy a dedicated 5.1 sound card that is known to function properly under Windows 10 (there aren’t many). This article goes through the steps on a Yamaha HTR-5660. Adjusting the decay time of the rear reverberant sound; Increase the rear speaker volume or surround speaker settings to maximum. Try selecting a different size (small or large) for the rear surround speakers in the menu. Verify that the A/V receiver is set to a surround sound mode. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more! 
De-interlacing explained:

http://www.hqv.com/technology/index1...TOKEN=92875981

Rainbow effect? I think I found your problem. I cannot get any sound out of the rears. 
"But this one goes up to 11"
. JavaScript is disabled. • Your IP: 103.227.176.13 I have not owned that receiver, so I don't know what's going on. Performance & security by Cloudflare, Please complete the security check to access. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Basic troubleshooting of Yamaha surround sound receivers is easy thanks to the menu. Increase the volume level on your receiver, and listen closely for sound coming from the rear speakers. Should be on auto. You might need to open up the manual, and play around to understand how to get to the desired processing mode. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. That explains how the sound modes work … :

http://www.dietforum.net/balagee/projected/rainbow.html

Lou
. IMPORTANT: For Dolby® ProLogic surround sound, the center-channel mode must be set to NORMAL or WIDE. Did you calibrate the system with an spl meter. • Yamaha requires you to throw a switch to activate the rear surround speakers. On my RX-V657, it took me awhile to really understand how to work with all the modes. For a better experience, please enable JavaScript in your browser before proceeding. A forum community dedicated to home theater owners and enthusiasts. Extended Surround. P.104 in manual. Setting Virtual Surround Back Speaker (VSBS) Selects whether to create Virtual Surround Back Speaker ... that is working with CINEMA DSP 3D, is not available when the straight decode mode or the direct playback mode is enabled. I am running 2 JBL 5" bookshelf speakers as my rear surrounds, and two of the same 5" JBL monitor bookshelf speakers for my L/R surrounds. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. After that, check your audio and see if the 5.1 surround sound is working. I hope to god its not a problem with the receiver. The menu is only available on Yamaha Surround Sound Receivers manufactured since about 2005. You must have it turned off. I cannot get any sound out of the rears.