Issue with Yamaha CinemaDSP on Atmos-Enabled Yamaha Receivers

The Issue

Unfortunately, as I wrote about this before, legacy Pro Logic / Pro Logic II / Pro Logic IIx / IIz Decoders have to be removed from Dolby Atmos enabled receivers. The only surround decoder / upmixer that is included is the new Dolby Surround upmixer.

Unfortunately, this has an unintended consequence on Yamaha receivers. When engaging any of the Cinema DSP modes with two-channel or 5.1 channel sources, the DTS Neo:6 decoder is used to upmix the channels to 7.1 surround sound before CinemaDSP is applied. I don’t know about you but I have never been a huge fan of DTS Neo:6 as compared to Dolby Pro Logic IIx.

When Can You Do?

You have two choices:

  1. Put up with Neo:6 for 2-channel and 5.1 channel expansion before CinemaDSP is applied
  2. Use the Surround Decode function to switch to plain Dolby Surround upmixing without CinemaDSP for 2-channel and 5.1 channel mixes

Please note that 7.1, Atmos and DTS:X mixes are not affected. However, 7.1 mixes will not be unmixed to all speakers, they will simply have CinemaDSP applied so again you will need to choose between upmixing and CinemaDSP.

Possible Solutions Yamaha Could Implement

The best solution would be for Yamaha to enable the Dolby Surround decoder to be used for upmixing before CinemaDSP is applied. Of course Dolby’s new Dolby Surround upmixer is computationally much heavier than the old Pro Logic decoders.

The other option would be to ask Dolby for an exception in this case and allow the Dolby Pro Logic IIx decoder to be used only under CinemaDSP. I understand they may require disabling it on the main interface so that users don’t accidentally select it instead of the new upmixer. However, in this case, the option is hidden quite down in the interface to cause much issue.

Recreating the Cinema Experience: Yamaha’s Cinema DSP

Opinion: Dolby Needs to Bring Back Old Surround Decoders / Upmixers

Yamaha YPAO Configuration – The Right Way

YPAO – The Lost Manual

If you need independent advice, or you just want to have a chat about your setup, please see my availability here.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Create a website or blog at WordPress.com

Up ↑

%d bloggers like this: