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Post by ttocs on Feb 21, 2021 13:00:45 GMT -5
The key to any analysis like this is understanding what the bass management processor is doing - or what it is SUPPOSED to do anyway given the limited information often available in owner's manuals. And bercause the information is limited it often becomes more frustrating than it is worth. IMO, anyway. I hope you are only using the OPPO for this test and not setting your system up this way permanently? Use a proper processor/preamp. The analog outs from the Oppo are designed to be connected to the analog ins on a preamp. And learning what is SUPPOSED to be happening is the bottom line. At least this is arming me with a better understanding of what I should be searching for. I don't have the OPPO in the system anymore, I just bring it out for crazy cr@p like this. But, regarding connecting directly to an amp, this from OPPO: " OPPO BDP-10x Universal Disc players are amazing Blu-ray players, CD/SA-CD players and network streamers but they can also be used as a digital pre-amplifier solution. Just add a stereo or multi-channel power amplifier and speakers for a high quality, high powered and minimalist HiFi solution."
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DYohn
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Post by DYohn on Feb 21, 2021 13:18:15 GMT -5
Perhaps one reason Oppo Digital went out of business.
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DYohn
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Post by DYohn on Feb 21, 2021 13:34:50 GMT -5
Also I just looked at the owners manual for an Oppo 105. Pagers 71 through 74 discuss the various speaker settings for surround sound, and it is contradictory, as well as indicating everything is manual. I assume you have set your channel trims and distance (time delay) settings properly? If not, then none of your other testing has any meaning. Also, in one section it indicates that the bass management works like a typical processor in that it send everything below the Xover setting to the subwoofer channel, and in another section is says the "ALL" speakers must be set to large to disable bass management, not that it is channel dependent. So who knows what this thing is actually doing to your signal? I recommend not using it as some sort of "reference" source - or simply uising HDMI to a proper home theater pre/pro and letting that device set you system levels. download.oppodigital.com/BDP105/BDP-105_USER_MANUAL_English_v1.8.pdf
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Post by ttocs on Feb 21, 2021 13:49:30 GMT -5
Each config was trimmed before each test.
" "ALL" speakers must be set to large to disable bass management ". This makes sense in regards to the first tests I did yesterday and might partially explain the results that were not plus or minus 10dB, what I would call the "in-betweens".
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Post by megash0n on Feb 21, 2021 18:39:39 GMT -5
To be sure I understand this thread, in general... Are we basically stating an opinion that, 3ish years later, we still have basic channel routing and volume issues? At a high level. That is what I am gathering, but want to be sure that, upon months of FW development to arrive at 2.2, we still have fundamental issues? I'm asking because I really haven't spent more than 2 hours with my G3P since upgrading, and all that time was simple documentary watching on Amazon Prime Video. The main purpose of this thread is to figure out why Subwoofer vs Fronts levels seem so wacky, and it's not an Emotiva thing as the results show. This diagram has no Emotiva processor, it' ONLY an OPPO, ATV, Amp, 1 speaker, 1 subwoofer. THIS is what is providing all of the results in the posted spreadsheets. My question is why is there no rhyme or reason to the results I'm getting while using a Dolby Disc? It seems to be baked into the Dolby spec that some speaker setups have one result from one audio sound field and others have a different result from another sound field. Forget about that Mono/LFE thing in the processor. I never even got around to delving into that one because LFE works so well for me with Large Fronts. And the LFE/Mono thing is not at the root of what I'm trying to find. I gotcha. I completely missed the part where Emotiva gear was removed from the equation altogether. My bad
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Post by ttocs on Feb 21, 2021 19:38:05 GMT -5
The main purpose of this thread is to figure out why Subwoofer vs Fronts levels seem so wacky, and it's not an Emotiva thing as the results show. This diagram has no Emotiva processor, it' ONLY an OPPO, ATV, Amp, 1 speaker, 1 subwoofer. THIS is what is providing all of the results in the posted spreadsheets. My question is why is there no rhyme or reason to the results I'm getting while using a Dolby Disc? It seems to be baked into the Dolby spec that some speaker setups have one result from one audio sound field and others have a different result from another sound field. Forget about that Mono/LFE thing in the processor. I never even got around to delving into that one because LFE works so well for me with Large Fronts. And the LFE/Mono thing is not at the root of what I'm trying to find. I gotcha. I completely missed the part where Emotiva gear was removed from the equation altogether. My bad No problemo. After your question I added extra info in a few posts to reflect that there is no processor involved with these tests. I'm really just trying to understand why subwoofer level seems inconsistent, but after Dyohn talked about AllSmall and AllLarge that brought some sense into the equation. It now seems that if some speakers are Large and some are Small, this wreaks havoc with Bass Management, irrespective of LFE - which is good. But the BM seems to play weird under certain speaker counts, and that's from a Dolby Disc playing TrueHD tracks. The one track I'm most interested in playing correctly is ATMOS, and that seems to be ok. Also, the tests with the OPPO are only applicable for DownMix to 7.1 and 5.1, they may have no bearing on a complete system - which I can only test with the XMC-2. So I'll repeat the exercise in a couple days with the same speaker setups of AllSmall and AllLarge. This all may conclude with LargeFronts being the bottom of the barrel sort of thing. IOW Most folks have AllSmall and that works as expected, and a tiny percentage may have AllLarge and that might work as expected, but the hybrid of SomeLargeSomeSmall gets all fouled up. If that's the case, lesson learned. Time will tell. Meanwhile I'm setting up the system for a Movie Night! tomorrow and I'll be setting the system up for AllSmall. Movie Night!Double Feature! Batman Begins The Dark Knight
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