Just to make things clear, you tried PC DLBC that only supports a single subwoofer? From your post it's a big difficult to understand exactly what you're testing.
Sorry, I thought I was clear about using a single subwoofer as part of my experiment in using DLBC. Let me try in point form to make things clearer, but with such a lengthy post, you may actually find it more difficult to understand.
- I am using the PC standalone DLBC beta version.
- Since I don't have any multichannel DAC and am using the PC standalone version, my only option is to use my existing AVP, the 15.1 AVM70.
- Output is via HDMI from my MacBookPro laptop, to the AVM70's HDMI input.
- AVM70 has 2 independent subwoofer outputs, both subwoofers are connected for normal use.
- Windows (will try using my Macbook Pro too but I doubt it would make a difference), cannot be configure to 2.2, or I just don't know how.
- Thanks to
@TimoJ , who helped me configuring for 2.2 (see his post#207), by connecting the second subwoofer to the correct Anthem outputs. Since my AVM70 is not intended to use DLBC, I don't want to change the feed for one of the two subwoofers differently than the way it is normally used. Again, I am only doing this for testing, if it works well, I will have to buy more hardware, in order to use DLBC in one of my two channel stereo systems.
In the end, the only practical way for my setup to work, again for experimental purpose for 2 channel use only, is to
- Configure windows for "stereo" (that is, 2 channels).
- Configure DLBC, using the Dirac Processor's Custom Channel Configuration menu for "Stereo", and then add one subwoofer, tried two but that wouldn't work.
Once the above are done, when I run the calibration, DLBC works fine except I noticed the following:
1) DLBC, as expected (because it was configured with one sub), send the calibration chirps to both subwoofers so Sub1 and Sub2 are treated as a single sub (like using a Y).
2) If I configure it to have two subwoofers, one of the subwoofer would not be mapped correctly to the Sub2 channels of the AVM70 so that's no good to me.
3) If I had configured everything to 2.1, then DLBC would recognize it also as just one subwoofer channel so again, both Sub1 and Sub2 would get the same calibration chirps.
That means, unless there is another way that I am not aware of, my only option is to beta test DLBC using the configuration described above. That is, use the custom configuration as shown below:
That will allow me to test DLBC in basically 2.1 because Sub1 and Sub2 are actually working a one, the two independent subwoofer outputs are getting the same signal.
The results look not bad, and with bass control on, it is doing a better job than with bass control off, except the suck out in the range 40-70 Hz seems a little too much.
In my thinking, I think some bass cancelling between Sub1 and Sub2 may be the main reason for the excessive suck out in that range because DLBC, in this case can only time/phase align the left, right and the Sub1/Sub2 as one but it is not possible to time/phase align Sub1 and Sub2, obviously because there is just nothing for it to time and phase align them when they are getting the same signal.
That's why I said in my post (the one that is clear to you) then my next step was to try using either Sub1 or Sub2 (by turn one off at a time) but not both, thinking that with just one sub I may get smoothing response because then there would be no cancellation between the two subwoofers.
I tried it yesterday with Sub1, and the result did
seem to look smoothing overall but very little difference. Using sub2 may be better, but I am not going to bother because a)I highly doubt it would make much difference based on trying it with Sub1 only, and b) After consulting
@Flak , I may be able to do better by experimenting with the crossover for the left/right speakers.
I signed up to Beta test DLBC page's instruction, using the PC standalone version, so far I managed to get the screen similar to Dirac's:
confluence.dirac.services
