Originally Posted by rockreactor
Hello, i have a few generic question what concerns this receiver. I own the RX 681 . Below a list of short questions
1) Cinema DSP 3D , what is it exactly ?
Yamaha's Cinema DSP 3D is the name of Yamaha's own synthesized surround sound processing. I think the "3D" part of the name refers to the use of "Front Presence speakers" aka the 2 front height speakers also used by Dolby Atmos and DTS:X
2) Sci-Fi , Spectacle, etc. Do they use all the channels provided from the source or they try to simulate them ?
I'm not sure but I think Yamaha uses whatever original channels are in the source and then adds in additional processing to those channels, but I could be mistaken.
To avoid this, select "STRAIGHT" for no additional processing. And to change a 5.1/7.1 discete channel audio source to just generate height channels ONLY while passing through the 5.1 signal unaltered (5.1.2 output), use either (the new) "Dolby Surround" or DTS "Neural:X"
3) DD Surround, Neural:X, Neo: 6 Cinema , what are the differences ? Do i have to set one according to the video file ?
"Dolby Surround" is the "new" version of Dolby's surround sound processing and the next version of Dolby Pro Logic II (instead of reviving the name "Dolby Surround", they could've called it "Dolby Pro Logic III"). The new "Dolby Surround" replaces the previous Pro Logic II versions and output a 5.1.2 surround soundfield (where the ".2" is the new front height speakers) regardless of how many channels are being feed to it. And in the case that an actual 5.1.2 "Dolby Atmos" signal is being feed to it, it does no additional processing and works the same as "STRAIGHT"
DTS "Neural:X" is DTS's similar technology that can create a 5.1.2 surround soundfield with those newfangled front height speakers and if the source audio is encoded as "DTS:X" then it also does no additional processing and works as a "STRAIGHT" passthrough of the audio signal.
DTS "Neo:6 Cinema" (and "Neo:6 Music") are DTS's older surround processing that take a 2.0 input signal and outputs 5.1 channels (note the lack of height speakers). (Given how Yamaha dumped the old Dolby Pro Logic II settings due to the new Dolby Surround that replaced them being included, I'm glad they at least retaining the older DTS Neo:6 processing even with the new Neural:X that essentially replaces them.)
4) YPAO Volume is this the volume that was configured at the start when setting up the speakers with the microphone ?
5) My receiver HDMI output goes to the TV. In addition i have a pc plugged in on an HDMI and a turntable on phono. Is it possible to display my laptop on the screen while also using the turntable ? I know those are two inputs and one output, i am just wondering if i could use my laptop (hdmi1) while using also the turntable (phono)
No, it can ONLY have ONE output at a time. To do what you want, you'll need to feed your PC directly to your TV via another TV input and then watch that input while setting your receiver to the phono input
6) When using tuner or phono as a source and turn on the volume, i hear a hissing sound (Volume on 0 to -10db) even when i have nothing connected on the receiver , on the other side with HDMI input i do not have this. Is this due the analog input ? Is this normal ?
Don't know, but that seems like a distinct possibility.