Originally Posted by blake
Is there no way for the Altitude itself to measure and report the level/delays of your individual subs, so you don’t have to use an external tool like MSO? The altitude is such a powerful device , I am surprised there is no way to automate the process of measuring the subs individually then calibrating as a single summated response.
blake - sure there is. I'll give you some steps:
1. Create a preset for your subs as independent subs on separate outputs
2. Run Optimizer
3. Look at the Optimizer Settings tab - Summary view
4. Note the following numbers for the Subs - "Level C Compensated" and "Delay Compensated msec"
5. Take the difference between these for subs. For example if Sub 1 is 80 db and Sub 2 is 82 db then Sub 2 difference is 2 db. Same for delay, for example if one of the subs is 0 ms (the reference sub) and Sub 2 is 1.5 ms, then the delay for Sub 2 will be 1.5 ms. You are done using this preset.
6. Go to your normal presets. Go to each one's Speaker Setup page and set a single Sub 1 for use as a multi-way then go to the active crossover page to finish setting them up as 2 way, 3 way etc "speaker". You will enter the level difference and delay difference on this page at the bottom. Save the crossover settings and save presets. You now can set any PEQs on the Sub back on the Speaker Setup page if you have developed some using some room measuring software. Not mandatory but you can if you want to fine tune.
7. Run Optimizer on each preset with this "combined" Sub.
This should get you in the ballpark but as some have noted, the Altitude's calculated delays may or may not be the "best". You may want to fine tune the delay & levels with REW, Omnimic etc and then replace the ones you entered on the active crossover page with these new ones. Save changes and save the presets.
I hope this helps. The Altitude is a powerful processor with lots of tools. All of us have been through or are still going through the learning curve on what it can do, and how to do things. But perhaps a bit unfair to continue questioning that it can't do something just because you haven't learned how yet
We're here to help!
I've attached 2 screenshots from my own Altitude when I made the transition from independent to a combined sub. I have since gone to a Xilica external DSP to do this fine-tuning with delays and levels (time alignment) instead of the Altitudes multi-way; I made this change since I have the A16, wanted to add more subs and didn't have more outputs.
Would it be nice for this to be automated? Sure. Maybe in the future it can be. It would entail not only pinging each sub like in the independent scenario but save that data in memory to be used on the active xover page. I don't know the math behind the covers but clearly MSO is pretty complicated math-wise. Assuming the math is developed and their mic measurements aren't too high a hurdle, programmatically it could be done using variables based on options the user selects, number of "phantom drivers" entered, etc. Takes lots of time money and available programming resources and would be MSO like but behind the scenes. But doing this has to fit in with Trinnov's overall priorities for future capabilities. They have Imax Enhanced, other enhancements on the table and I believe looking into more with the bass/sub management side so time will tell. In the meantime, there's ways to do this w/o resorting to MSO