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    2021年夏開始の新作アニメ

    Main to Sub Crossover Alignment Fundamentals With Open Sound Meter | Pt. 1



    ►► Get this OSM Project File free in my audio tools: https://www.producedbymkc.com/audiotoolkit

    Trace-book.org – https://trace-book.org/

    Main to sub alignment is one of the most highly requested topics I cover on the channel. Why is this? My take is this is one of the last crossover frontiers we as audio engineers IN THE FIELD have control over. Everything else is handled by the manufacturers in the boxes. No longer are we soldering our own passive crossovers to hand off mids to highs. Subwoofers are their own separate box, so we’ve got to take care of business.

    Today’s video removes many of the variables that muddies the waters when it comes to Main and Sub alignment. We’re focusing on the fundamentals of the physics of sound and how it affects getting summation (energy working for us) throughout our crossover range (where our mains and sub overlap).

    We’ll cover:
    – How you should prioritize this process among how else you can optimize a system
    – My favorite features in OSM
    – How to zero in on the exact frequency range for optimal alignment (and it’s not always the where the crossover filters are set)

    ⏱ Timestamps:
    00:00 – Intro
    01:41 – Setting Up Your OSM Session From Scratch
    05:57 – Defining Success & Speaker Processing
    07:33 – Alignment Procedure Step by Step
    17:59 – Key Takeaways

    #subwoofers #livesound #opensoundmeter #fft

    31件のコメント

    5. Bobby Smith on

      So do you recommend the Michael Lawrence curve or the L Acoustics curve? I just got done tuning all my systems in my different rooms with the 1000hz tilt curve because I thought that's what you would do haha

    6. lhe on

      I was waiting for this! Thanks for your precise and very visual explanation! 
      Best channel concerning audio and PA system processing on the net!

    9. Dustin Radtke on

      I have this exact set up. Normally it is 153 on pole in the 118. Although I really want to try subs in the middle and 153 on stands at some point.

      If I understand correctly from your example you'd set the delay in the mixer for the subs at 13ms. Isn't that noticeable to the player? Like the kick or bass would feel off to them as they play and hear it in the sub or is this short enough that it isn't audible to them?

    12. DLcarburetor on

      Useful information. In the pursuit of perfection I'd like to do this but rarely have time to get any tuning done. I'm doing small stuff, nothing this big.

    16. Diogo Cocharro on

      This is so good!
      Thank you Michael 🙏🙏🙏
      Specially with the added benefit from using open source apps.
      May I ask your opinion on room eq wizard REW for this task.
      One big adventure is that there's no need to blast pink noise on the people working in the venue.
      I would to see one of your videos using REW as well.
      Thank you!

    17. tuli h on

      Thanks Michael, great video as always 🙏
      When you're defining the 10dB window you are doing +-10dB isn't that a 20dB window?

    21. Ricky Robinson on

      Totally confusing! You're now saying use the mains as reference but use no delay finder, 0.00ms. Recently you mentioned use mains as reference and use delay finder on mains only.
      You're also talking about smaart here but you have OSM opened. 😢

    23. Ricky Robinson on

      Out of nowhere you start talking about smaart but we're in OSM. That was a distraction.
      Can you use an external driverack with active speakers instead of using the speakers internal built-in xover?

    25. Dave71 on

      Great Videos , very informative and a valuable resource..Thank you!!!
      Shame i can't get open sound meter to work on my M1 Mac Mini (monterey 12.6.7) Have been through your vides and all the settings numerous times to no avail. For whatever reason, the audio input isn't being picked up by OSM. Signal generator outputs to my speakers, have had it looping back to an input successfully, also tried an external signal generator. Sound card and speakers are fine, just no audio is getting 'inside OSM' as the meters are not lighting up at all.

    26. Mark Quinton on

      Would it be viable to use a sine wave in the field if you dont have access to a laptop and software? Set cross over points on both mains and subs the same then play a sine wave through both set at equal volumes with the phase reversed on the sub and start implementing delay with the sub being closest to the reference point?

    28. William Ogden on

      One aspect of sub alignment I have had the most trouble with has been getting a good impulse response out of a subwoofer. For whatever reason, subs never show any kind of usable impulse response in OSM. the delay locater also has some trouble. Why is that?

    29. David Alcaraz on

      Awesome video, Michael! thanks for sharing such a great information. Let me ask you something. I have a 3.1 system, I mean 2 subs and 3 tops. At the moment the tops are running Left Right Left, because I don't have any audio processor, what's the best configuration you think i should have? I've been thinking on the dbx drive rack to divide the signal and get L C R, but you think is it worth? the place is not big, is a medium size church.

    31. Asole ❶⓿⓿ on

      What about putting subs, and tops in the front, and back for better coverage? Or tops, and subs on each side as well as the front, and back? I haven-t seen anyone talk about this, and I figured you would know if whether this is a dumb idea or not.

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