How-To: Verifying Phase Cohesion Through A Crossover

Hey guys, sorry that I haven't uploaded anything in a while. I have been a bit distracted. That said, with the short slow down of business due to Covid-19, i started offering remote tuning on a limited basis again. A few had some things to say, so here is a video inspired by the common denominator of those comments. Enjoy
Note: This only works for even order Linkwitz-Riley crossover slopes (12db, 24db, 48db, etc), and the EQ seen in this video is PURELY for the sake of the video. It is not my actual tune.
For more helpful videos and articles, check out the ResoNix Blog
resonixsoundsolutions.com/res...

Пікірлер: 42

  • @picassoimpaler3243
    @picassoimpaler32434 жыл бұрын

    This was gold for me, thank you very much. Just getting into tuning with an RTA instead of by ear, and this info is priceless. If you taught a class I would pay you

  • @travismclendon8961
    @travismclendon89614 жыл бұрын

    Thank you so much, this is a huge help. I appreciate you making these videos for us. I've learned a lot just by watching them.

  • @eodvet485
    @eodvet4854 жыл бұрын

    Just beginning to tune and these vids haved helped immensely. As a beginner there are certainly mistakes I've made and come back to watch and try again. I will say It takes a long time to tune. At this point with my limited experience.

  • @jayinmi3706
    @jayinmi37064 жыл бұрын

    I was like "That's not all that smooth..." then I realized the scale you were using the dips and peaks along the FR were like 2dB or less. Thanks for another helpful video. I swear this is pretty much what Andy preaches. lol

  • @jerryunknown3638

    @jerryunknown3638

    4 жыл бұрын

    Except for the gap in crossover between sub and Midbass...

  • @Slamdick

    @Slamdick

    4 жыл бұрын

    Jerry Unknown what gap? Did you watch/learn anything from the video?

  • @truckguy9413
    @truckguy94134 жыл бұрын

    Excellent video and explanation. Thanks! Peter had a link in his recent video. Glad I watched both!

  • @bfytw2125
    @bfytw21254 жыл бұрын

    Great info. Thanks again for these videos.

  • @UzsDc1UZ
    @UzsDc1UZ5 күн бұрын

    Thanks man, this is a cool video to learn from

  • @wickswirescaraudioandfabri7730
    @wickswirescaraudioandfabri77304 жыл бұрын

    Awesome video, and love your work mate :) I just had a mega light bulb moment. Been struggling a little with phase response and how to apply allpass correctly and this just made it click lol. I think i need that RTA software that looks killer. Thank you :)

  • @satyadw
    @satyadw4 жыл бұрын

    Nice video and information about all pass filter to solved the some phasing problem. Do you have a video more about the advantage of all phase filter in helix? Thank a lot before and good luck for your business :)

  • @kostas133kostas
    @kostas133kostas3 жыл бұрын

    Thank you for uploading those videos. They 've been very helpful! @04:37 REW v5.18 doesn't set a LR24db slope as a target. It sets a butterworth filter. You can select a LR24db filter only at the latest beta version of REW (5.20)

  • @ResoNixSoundSolutions

    @ResoNixSoundSolutions

    3 жыл бұрын

    The new beta version can do LR

  • @ofergover2978
    @ofergover29783 жыл бұрын

    Great video, thanks. I want to do this in for room speakers. Was this all near field measurements? How far was the mic to do all the measurements?

  • @davewatson5066
    @davewatson5066Ай бұрын

    Great video. Will the bass and mid bass look summed, like in Rew, when you click the Sum in the Helix dsp?

  • @janiss9999
    @janiss99992 жыл бұрын

    Thanks for that video i have got one question. I thought when you measure more than 9ne speaker you have to us stereo pinkonoise. And in this video you said mono. So i am a bit confused i was probably wrong.

  • @13BTRX3
    @13BTRX33 жыл бұрын

    Thank you so much for sharing, I've learned so much by watching your videos. One quick question though. On a helix dsp, after setting your time alignment distances, is it better to get the drivers in phase by adjusting the time alignment itself, or would adjusting the phase angle be better? Thanks in advance, I can't wait until you post another tuning video!

  • @ResoNixSoundSolutions

    @ResoNixSoundSolutions

    3 жыл бұрын

    I'm glad you are getting info out of the videos :) As far as phase/time.. well, it depends which one is off ;)

  • @13BTRX3

    @13BTRX3

    3 жыл бұрын

    @@ResoNixSoundSolutions thanks for the reply! I'm guessing that knowing the difference is the hard part. I was mostly curious of weather or not the phase angle delayed the signal like the time alignment, or if it changed the angle of where it started to produce the signal. It sounded like a much more coherent though before I typed it out.

  • @kondrax85
    @kondrax854 жыл бұрын

    Do you use filters other than 24 dB LR? They helps in many things, such as reducing small time errors, or better protects tweeters. The acoustic filter is similar to electric, etc. And don't you feel that these filters sound a bit plastic. Is it better to use e.g. 6 or 12dB? In home audio, many construction has, acoustical 12dB LR. What is your experience?

  • @techdata_channel

    @techdata_channel

    3 жыл бұрын

    Today I switched LR4 to BTW4 and sound starts to live again. But I choose 55 hz for sub and 80 hz for woofer as cut-off freq, because sub @ 80 hz cut-off sounds dirty as harmonics increases. When I also applyed BTW4 highpass filter for sub @ 35hz the bass become more smoothly then my prev varient @ CHEB4 (my sub is vented, tuned to 35 hz). LR2 I use for Woofer + mids + tweeters

  • @BarrySchanz
    @BarrySchanz4 жыл бұрын

    Could this method be used to determine what a variable 0-180 degree phase knob on a bass amplifier is designed to do?

  • @ResoNixSoundSolutions

    @ResoNixSoundSolutions

    4 жыл бұрын

    probsbly

  • @76jazza
    @76jazza4 жыл бұрын

    Thanks for the awesome content nick, and F##k the haters!!!

  • @Slamdick
    @Slamdick4 жыл бұрын

    Excellent Video!

  • @Cathul
    @Cathul4 жыл бұрын

    How do you do that if you don't have allpass filters (like in most non-Helix DSP-amps f.e.)?

  • @OpeKoney

    @OpeKoney

    4 жыл бұрын

    That's the whole point of allpass filters, Peter.

  • @resonantevol

    @resonantevol

    4 жыл бұрын

    You get a better DSP...

  • @Various93
    @Various933 жыл бұрын

    Thanks for the video! I have three points: 1. Have you tried to actually MEASURE the phase? Basically, you can't tell that using LR24 will give you perfect match as every speaker "touches" the phase as well. I'm using Smaart in CA for time alignment (and IMO you can't do it better with ear or by distance, Smaart measures the impulse response in live mode so you can adjust every speaker to "meet" at the RTA Mic position) and a little for phase analysis, but there is so many reflections and below ~2kHz it shows bullshit. 2. Can you do a video about two-seat tuning? Assuming no center and, let's say, not the latest helix dsp (no upmixer). 3. What about another filters, like BW12? Do you use something else than LR24? Cheers!

  • @tcaudiomute
    @tcaudiomute2 жыл бұрын

    hi bro how can I engage with your remote tuning services ?

  • @hiresaudiocosta873
    @hiresaudiocosta873 Жыл бұрын

    Linquitz Riley 4th order gives a 360 degree rotation yes, so the drivers would be in phase but one full cycle off. So it's not perfect but close. One cycle off at 20 hz 60 feet long.

  • @ResoNixSoundSolutions

    @ResoNixSoundSolutions

    Жыл бұрын

    Phase is not delay

  • @hiresaudiocosta873

    @hiresaudiocosta873

    Жыл бұрын

    @@ResoNixSoundSolutions Still can be in perfect phase throughout the crossover region, but it won’t sound right unless the one cycle off is fixed. Can’t fix that by just using a tape measure and adding delay based on driver location. How do you fix the one cycle off problem?

  • @ResoNixSoundSolutions

    @ResoNixSoundSolutions

    Жыл бұрын

    @@hiresaudiocosta873 I don't think you are understanding.. I suggest looking up Rane's article on Linkwitz crossovers.

  • @SQMaNiac
    @SQMaNiac4 жыл бұрын

    Hello from Ukraine ! Great video. I setup on the phases by ear, but it’s difficult, I’m looking for a way to tune using a microphone and "grinding" by ear. You showed a good example, I will try soon. I'm still learning, now I am faced with a problem: how to make the left and right sides the same ?, it is very difficult to configure for me... Thank you so much for your work!

  • @leif8660
    @leif86603 ай бұрын

    yes years later I find this post lol. It is a battle we will never win against these self proclaimed internet experts that just try and torpedo our post. You get used to it. Most people don't even realize that these are basic text book designs and todays tech is way above this. So this poster is accurate in you can in fact use this as one way to check phase integration. But can you get the speaker to reference 0 degree's throughout the majority of your frequency response? And you could show a minimum phase graph so we can see what phase of the xovers are doing. Measurements are just a tool and can not tell you how a speaker will sound. I had speakers with perfect flat response and sounded like crap. Todays standard of measurements can't show you psycho-acoustics in a speaker design. People think wire doesn't make a difference...(more ignorant people). Everything matters and has an effect on the sound, The poster is correct and this is a very simple way to check phase between the drivers. There is more to this than just this to truly know if you have perfect phase integration but this method will certainly get you going in the right direction. I could hear it in your voice when people say your wrong. I used to get pissed and still do. It never goes away lol. Keep up the good work!

  • @jrossman4703
    @jrossman47033 жыл бұрын

    👌

  • @chrisN80
    @chrisN80 Жыл бұрын

    AMAZING VIDEO NICK. QUESTION WHAT IS THE Q THING. ON THE ALL PASS FILTER BUDDY. THANK YOU FOR THE VIDEO

  • @kewlbug
    @kewlbug2 жыл бұрын

    Can’t you just do time alignment? More vids like this!

  • @ResoNixSoundSolutions

    @ResoNixSoundSolutions

    2 жыл бұрын

    Of course you do time alignment. But measurement via tape measure doesn't always work so perfectly at lower frequencies in a car.

  • @RevNelson
    @RevNelson2 ай бұрын

    EQ is bad because of phase.

  • @ResoNixSoundSolutions

    @ResoNixSoundSolutions

    2 ай бұрын

    Cannot tell if this is sarcasm.. lol