No problem here.
For this test you will need the AIX Audio Calibration, Blu-ray, an SPL meter, and an OPPO BDP-93 player cabled HDMI 1 output to Rear HDMI Input of the 105
1) I set my Anthem D2v to use HDMI 1 video from the 105 with 6-channel Analog audio from the 105 (I'm using the Dedicated Stereo L/R RCA jacks in lieu of the normal LF/RF jacks from the multi-channel set -- with Stereo Signal FRONT LEFT/RIGHT). The 6-channel Analog audio input in the D2v was set to ANALOG-DIRECT which disables Anthem Room Correction, Crossover processing in the Anthem itself, and any other audio processing in the Anthem.
2) Set the BDP-93 to 1080p output with HDMI Audio LPCM output.
3) Set the 105 Audio Processing > Speaker Configuration so all Speakers are Small. Since my D2v only provides +10dB boost on the Analog LFE input, I also needed to raise the LFE level by another +5dB to deal with the -15dB attenuation of the Analog LFE output when any speakers are Small. For this test, I accomplished that by setting the Subwoofer Volume Trim in the 105 to +5dB.
4) Set the 105 to Crossover 100Hz.
Baseline Result -- Disc Playback in the 105
1) Load the AIX disc in the 105 and play the Channel ID > LPCM 5.1 track. Use the SPL meter to verify your speaker levels are correct (adjust if necessary).
2) Now play the Subwoofer Crossover Test track. This is an LPCM 2.0 track that sends a tone to Left Front (only) which sweeps up and down in frequency from well below to well above the Crossover frequencies. At the high frequency end, all the audio should be coming from your Left Front speaker. At the low frequency end, all the audio should be coming from your Subwoofer due to the effect of the 100Hz Crossover. If your Sub is set up properly and the bass response characteristics of your listening room are properly dealt with, this test will produce constant volume from end to end (except for the very lowest frequencies which are hard to hear). That's a very tough test, but not necessary to pass so perfectly for what we are confirming here. Right now all you need to do is verify that the low frequencies really are coming from your Subwoofer. If the bass transition blend is so smooth you can't be sure, simply go to the sub and lightly touch the grill or cone and you will FEEL when the Sub is active.
3) For comparison, try a 40Hz and a 250Hz Crossover in the 105 to verify the Crossover setting in the 105 really is doing what it is supposed to be doing.
Checking the Rear HDMI Input
1) Now load the AIX disc in the 93.
2) Set the 105 to Input > HDMI Back
3) Play the Channel ID > LPCM 5.1 track on the 93. Use the Info button on the 105 to confirm that the input is LPCM 5.1. Use your SPL meter to confirm that the speaker levels are STILL correct -- you should get the same result as when the disc was played in the 105.
4) Now play the Subwoofer Crossover Test in the 93. Use the Info button on the 105 to confirm that the input is LPCM 2.0 (i.e, there is NO LFE CHANNEL INPUT).
RESULT: You will hear precisely the same thing you heard when the disc was played in the 105 itself, for each of the Crossover choices (100Hz, 40Hz, 250Hz).
Thus, no problem. The Analog Speaker Configuration "Small" and Analog Crossover settings are functioning normally in the 105 even if the audio is coming in on the HDMI Input.
Thanks, Bob. In the laptop sound panel, I have 5.1 selected in the speaker setup, but I don't know if the output signal is LPCM 5.1. I will check the info button on the 105 to determine the signal I'm getting. I don't know what the requirement is for the signal output from a computer inorder to run REW. I will check the HTS site for this.