On the SACD LFE level anomaly discussed above, some additional, but still preliminary results:
1) It's beginning to look more like the LFE level in track 48 of "Stay in Tune with PentaTone", SACD, really is authored about +5dB too hot. More work is being done to confirm this and determine the exact delta. If true, then the anomaly we've been discussing is *NOT* a bug in the 93 or 95.
2) There was a firmware fix to SACD LFE output level early last year. I suspect, but I've not yet been able to confirm, that the bug fixed was that the player was putting out SACD LFE -5dB too low, and thus the fix was to put it back to the correct level -- +5dB louder. If this turns out to be actually what happened, then of course this presumed bug and (1) above would counteract each other. And thus any tests I did on the PentaTone LFE level PRIOR TO the player firmware fix would have given the FALSE result that the PentaTone LFE was correct.
3) It looks like there is a bug in the player's built-in Analog Subwoofer test tone. It appears to be +7 to +10dB too hot. Calibrating the volume trims using that test tone would thus result in you incorrectly lowering the Subwoofer volume trim too much (or the equivalent change in the Sub's own Volume knob setting). This, too, is still being double-checked. It is possible that the error here may be different on the 93 and the 95.
4) At the moment, it appears that calibrating levels using the 5.1 or 7.1 LPCM track from AIX Audio Calibration, Blu-ray, (according to your actual speaker set up) produces correct results, including correct results for SACD Analog PCM playback (and also for SACD Analog DSD playback given the caveats in (6) below). Roger has posted concerns about the way the AIX LFE level test is constructed, but for people with a Subwoofer with good (i.e., wide) frequency range, the AIX LFE level test appears to work.
5) The Analog Subwoofer output of the 93 and 95 needs +15dB boost, external to the player, to match the main speaker channels. This is by design, and is true WHETHER OR NOT all Speakers are set to Large in the Oppo. It has been confirmed that this is true EVEN for SACD playback using DSD-Direct-to-Analog conversion. This is as expected, but it's been re-confirmed as part of this checking.
6) It's been re-confirmed that, as expected, the player's internal, speaker output Volume Trim settings are *NOT* active for SACD playback using DSD-Direct-to-Analog conversion. If you want to compare SACD playback of Analog PCM vs Analog DSD you must have all the speaker volume trims in the player set to 0dB (and all speakers Large, and at least 5.1 speakers configured, and all speakers set equidistant -- since crossover, down mix, and speaker time alignment processing ALSO doesn't happen during SACD Analog DSD playback). Any necessary balancing of speakers and subwoofer would need to be done external to the player when using SACD Analog DSD output.
Normally I wouldn't post such info until everything had been thoroughly nailed down, but I know we have a number of posters here playing along at home on this, and so I wanted to get an update out.
THE INFO ABOVE IS STILL SUBJECT TO CHANGE!