Your videos have helped me so much allready and I'm sure they will in the future. Now I'm going to try out my focusrite I bought a while ago. Tried to use REW for impulse response but got different results even when doing 5 measurements in a row 🤷
Thanks a lot, also where should I put my time 0 ? at the fist noticeable wave peak or at the first wave there exist, If I increase my offset slider to some crazy number I can see some additional subwoofer waves, but they are so small that the size of the wave is almost as big as noise on the graph.
I’m getting a fuzzy line when doing response . Yours is clear and straight,I’ve been watching and pausing on your setting but don’t see anything obvious I did wrong … thanks for the videos
I also like to disable xo at all, record in REW and then play with "Predicted Phase" in Overlays while adding different XO's in eq/filters. It's quite accurate. I found that aligning phase this way with different crossovers is more important for bass drivers than following target curves precisely in my case 👍
@@jonesaleroy Prepare and record impulse responses: - Turn off xovers for the speakers you will measure, preferably only those that you'll change, so LP on Sub and HP on Woofers, with time alignment done earlier - Record Impulse response, "Use loopback as timing ref" etc, set Timing Offset so that it's easier to read (phase lines are more straight if you choose correct one), then use the same offset for all recordings Work: 1. Open Overlays -> Predicted Phase 2. Open EQ -> Filters for the measurement that you'll change (you can easly navigate to another measurement with Alt + up/down) 3. Apply LP or HP filters, use "Generic, Extended" for highest selection of crossovers 4. Observe how lines change in "Predicted Phase" tab :) 5. You can save the predicted measurement by using "Generate measurement for predicted" to save if you like what you see Save some examples for Sub, Woofers, then compare both in Overlays window. Then with saved predicted measurements also like to use "All SPL" tab -> Right click -> Alignment tool - which allows to shift time alignment and inverse polarity :) Fun stuff. After that of course apply a real crossover, record and check if the result match. In my case they were always 99% spot on - REW is amazing, really.
Thanks again for great information 😊 I’m wondering is it a good idea to use a AD converter and use the digital input to the DSP? If so you don’t need to re route the DSP inputs.
Hello. I need some help. I'm starting to use HolmIMPULSE for timing, but I have a very strange problem. From my Mosconi 8to12 Aerospace DSP, I put the times that it tells me in HoimIMPULSE, but I don't see any result in the wave displacement when I take the measurement again. Nothing happens. Even if I modify the maximum time to 12.00 ms or the minimum to 0.00 ms. Could someone help me? Thanks
This is why it's so awesome to have Smaart. You can do this in a matter of minutes and align phase in real time. You could use OSM, which is free, to do the same process you would do with Smaart. A more precise and easier way to align midrange and midbass is to remove your low pass crossover and align the first IR peak to your offset. When you apply your LP again and make another measurement, the IR will be perfectly aligned at the base of the initial rise. Then align your tweeter to the first IR peak for each tweeter since you won't be applying a low pass to the tweeters. Then you align your subwoofer by phase rather than IR.
Yes, smaart is very cool, but for me as a hobbyist the subscription price cannot be justified. OSM is a great alternative. You can cut a hole with 10 differwnt tools😉
Can you tell me the model number of focusrite audio interface you are using, and does it comes with XLR mic or we have to buy them separately, and do we need download it software or driver to use or any calibration file.
Hello, I have the problem, Holmimpulse dont show me the Asio driver from my Focusrite. I installed the Focusrite driver right and i see the ASIOusb data in the files, but in Holmimpulse it not find the Driver.
@@RAW-CAt i did it, but it doesnt change. I deleted and reinstalled, but it doesnt helped. Did you installed a seperate ASIO Driver from your Focusrite ? or the standart Focusrite Control ? When i install asio4all, then Holmimpulse shows it.
Hello lovely friend, i have Mini Dsp Umik1, Helix PSix, 3way active system. I learned all of RTA Measurement from your videos. Now, Do i need Focusrite ? I can find second hand 3rd generation focusrite... But not sure do i need or not...
Highly recommended for the impulse response. With the focusrite you can measure impedance of a driver like with Dayton DATS and amplifier distortion. It's a very universal tool.
Hi, I've installed an alpine r2w10d4 în a 20 liters sealed box and on some songs the bass is overpowering. Do you know why this is happening? The bass is set to zero on the the factory player, bass boost on the amplifier is set to zero as well and the high low adapter is esx isc4. Its quite a quality one. The car is a 2015 mazda 3 hatchback. This issue I had on the previous car as well with two different subwoofers one sealed and one ported. What am I doing wrong? Thanks
@@Pete.across.the.street Hi, Thank you for your response. I've turned the gain down and now sounds better but what is weird is that before turning the gain down the amplifier was not set to it's max rms power of 750w in 2 ohm (alpine R-a75m) it was set to about 500w measured with a multimeter
@@SirTheo89 don't worry about watts at all. You have to double the watts to get 3db more volume. Blend it by ear. Usually gain set at half way is plenty, can even be much less. It will still get all the power needed even with the gain turned down (gain is different than volume control). Is it still much louder on some songs than others? Are you running dual subs? I suspect that you have the subwoofers wired out of phase or need to switch the phase of the sub. Why is the load 2 ohm? How are you getting a 2 ohm load? Double check you have it wired correctly if you're not running a 2 ohm sub.
@RAW-CAt On supported Scarlett 3rd gens, we've included Loopback. Focusrite Control’s Loopback feature lets you record other audio sources from within your computer (e.g., the audio output from a web browser). Loopback uses the Scarlett’s 'virtual' inputs, which have no physical connectors on the hardware interface itself but may be selected in the DAW as signal sources for recording in the same way as any other. By selecting the Loopback output as the recording source on a mono or stereo DAW track, you can record from another software application into your DAW. Note that your computer will assign DAW 1 and DAW 2 as the default sound output channels.
Hi, have you ever tried Open Sound Meter? You are faster with OSM, and in real time you see impulse and phase while playing with the DSP. With holimpulsr it is more cumbersome, then if you want with OSM it is easier to align phase and flight times even offline, train with Open Sound Meter get the hang of it and you will see that you will not be able to do without it. Bye.
You're exceptional
Dude, you rock! This is a video I needed! I'm sure you'll cover what I need. Another great breakfast vid! ❤
Díky!
Your videos have helped me so much allready and I'm sure they will in the future. Now I'm going to try out my focusrite I bought a while ago. Tried to use REW for impulse response but got different results even when doing 5 measurements in a row 🤷
thank you for sharing your knowledge
Thanks a lot, also where should I put my time 0 ? at the fist noticeable wave peak or at the first wave there exist, If I increase my offset slider to some crazy number I can see some additional subwoofer waves, but they are so small that the size of the wave is almost as big as noise on the graph.
I’m getting a fuzzy line when doing response . Yours is clear and straight,I’ve been watching and pausing on your setting but don’t see anything obvious I did wrong … thanks for the videos
Try increasing the volume or the input gain on the microphone.
@ ok thank you sir .. I really appreciate it
I also like to disable xo at all, record in REW and then play with "Predicted Phase" in Overlays while adding different XO's in eq/filters. It's quite accurate.
I found that aligning phase this way with different crossovers is more important for bass drivers than following target curves precisely in my case 👍
Love where you're heads at! I'd like to hear more on how you set this up if you don't mind? Thx
@@jonesaleroy
Prepare and record impulse responses:
- Turn off xovers for the speakers you will measure, preferably only those that you'll change, so LP on Sub and HP on Woofers, with time alignment done earlier
- Record Impulse response, "Use loopback as timing ref" etc, set Timing Offset so that it's easier to read (phase lines are more straight if you choose correct one), then use the same offset for all recordings
Work:
1. Open Overlays -> Predicted Phase
2. Open EQ -> Filters for the measurement that you'll change (you can easly navigate to another measurement with Alt + up/down)
3. Apply LP or HP filters, use "Generic, Extended" for highest selection of crossovers
4. Observe how lines change in "Predicted Phase" tab :)
5. You can save the predicted measurement by using "Generate measurement for predicted" to save if you like what you see
Save some examples for Sub, Woofers, then compare both in Overlays window. Then with saved predicted measurements also like to use "All SPL" tab -> Right click -> Alignment tool - which allows to shift time alignment and inverse polarity :) Fun stuff.
After that of course apply a real crossover, record and check if the result match. In my case they were always 99% spot on - REW is amazing, really.
@@fretflyer1hero we wanted
Thanks bro, always bring great content 🫡
can i send the signal to an avr or do o need a dsp?
Do you have video about phase aligment and how to use phase slider in helix ?
ruclips.net/video/WaN_FgIIUjY/видео.html
What cable setup would i need if I'm connecting to a helix dsp if I only have optical in?
You could use a simple AD converter box. Same setup just an extra piece before DSP.
Thanks again for great information 😊
I’m wondering is it a good idea to use a AD converter and use the digital input to the DSP?
If so you don’t need to re route the DSP inputs.
You can ,but I don't see the point. Audio interface has analogue outputs, DSP has analogue inputs🤷
@ I’m aware of that but my digital input to my DSP is easy to access. My analog input is not because my DSP is hidden behind the dashboard ☺️
Hello. I need some help.
I'm starting to use HolmIMPULSE for timing, but I have a very strange problem. From my Mosconi 8to12 Aerospace DSP, I put the times that it tells me in HoimIMPULSE, but I don't see any result in the wave displacement when I take the measurement again. Nothing happens. Even if I modify the maximum time to 12.00 ms or the minimum to 0.00 ms. Could someone help me?
Thanks
Check if your offset in holm is fixed and not automatically detected.
ani send the focusrite output into my avr or do i have to have a dsp?
It depends if your avr has analogue inputs. In that case yes, you can.
This is why it's so awesome to have Smaart. You can do this in a matter of minutes and align phase in real time. You could use OSM, which is free, to do the same process you would do with Smaart.
A more precise and easier way to align midrange and midbass is to remove your low pass crossover and align the first IR peak to your offset. When you apply your LP again and make another measurement, the IR will be perfectly aligned at the base of the initial rise. Then align your tweeter to the first IR peak for each tweeter since you won't be applying a low pass to the tweeters.
Then you align your subwoofer by phase rather than IR.
Yes, smaart is very cool, but for me as a hobbyist the subscription price cannot be justified. OSM is a great alternative. You can cut a hole with 10 differwnt tools😉
In my past I found this technique with disabling LP very helpful, easier to set the initial peak. I recommend too 👍
what type of dsp do you use and what does the dsp connect to other than thefocusrite?
I use Helix DSP Pro mk3 it is connected to 3 different amplifiers that are powering my whole system.
Can you tell me the model number of focusrite audio interface you are using, and does it comes with XLR mic or we have to buy them separately, and do we need download it software or driver to use or any calibration file.
Hello, I have the problem, Holmimpulse dont show me the Asio driver from my Focusrite. I installed the Focusrite driver right and i see the ASIOusb data in the files, but in Holmimpulse it not find the Driver.
Maybe a very basic advice, but restart your computer after the driver install.
@@RAW-CAt i did it, but it doesnt change.
I deleted and reinstalled, but it doesnt helped. Did you installed a seperate ASIO Driver from your Focusrite ? or the standart Focusrite Control ?
When i install asio4all, then Holmimpulse shows it.
Impressive!
Hello lovely friend, i have Mini Dsp Umik1, Helix PSix, 3way active system. I learned all of RTA Measurement from your videos. Now, Do i need Focusrite ?
I can find second hand 3rd generation focusrite... But not sure do i need or not...
Highly recommended for the impulse response. With the focusrite you can measure impedance of a driver like with Dayton DATS and amplifier distortion. It's a very universal tool.
@@RAW-CAt What kind of mic should i get ? Think that i am an amateur not for job...
Hello :) Will the set consisting of Behringer ECM8000 + UMC202HD be suitable for performing this type of measurements?
Yes
Would behringer ECM Pro work as well or better?
@@JD-vr4ul I am not familiar with anything ecm pro..
I would guess it's the model after ecm8000. I guess I'll stick to the ecm8000, price isn't much different.
Also why use Umik and ecm8000 for tuning ? Wouldn't ecm8000 also measure frequency response?
my measurements always pulls down then up. is this an issue?
wondering the same thing
I find REW to be a huge pain in the ass. I only use Holmimpulse for everything now. A great software that is easy to learn and easy to use.
would a focusrite scarlett solo work for this?
Yes it would. Solo has 2 channels of input.
Hi. For loopback you set to inst (instrument) or line input type? thank u
Does not matter.
with a helix dsp i need an audio interface?
You need an audio interface if you want to measure impulse response as demonstrated in the video.
any time you want to show this process with REW as well would be amazing :)
ah just seen there is a bit at the end that covers REW actually
Those phase lines need to overlay? or just to meet at the bottom? or just to be one near the other in a straight line as possible. I dont get it
17:30
Hi,
I've installed an alpine r2w10d4 în a 20 liters sealed box and on some songs the bass is overpowering. Do you know why this is happening? The bass is set to zero on the the factory player, bass boost on the amplifier is set to zero as well and the high low adapter is esx isc4. Its quite a quality one.
The car is a 2015 mazda 3 hatchback.
This issue I had on the previous car as well with two different subwoofers one sealed and one ported.
What am I doing wrong?
Thanks
You need to measure RTA and see the frequency response. If you have EQ, try cutting 50Hz by 10dB.
The gain on your sub amp is probably too high. You probably also have a lumpy bass response as well. Might have phase issues as well.
@@Pete.across.the.street Hi, Thank you for your response. I've turned the gain down and now sounds better but what is weird is that before turning the gain down the amplifier was not set to it's max rms power of 750w in 2 ohm (alpine R-a75m) it was set to about 500w measured with a multimeter
@@SirTheo89 don't worry about watts at all. You have to double the watts to get 3db more volume. Blend it by ear. Usually gain set at half way is plenty, can even be much less. It will still get all the power needed even with the gain turned down (gain is different than volume control). Is it still much louder on some songs than others? Are you running dual subs? I suspect that you have the subwoofers wired out of phase or need to switch the phase of the sub. Why is the load 2 ohm? How are you getting a 2 ohm load? Double check you have it wired correctly if you're not running a 2 ohm sub.
@@Pete.across.the.street i have one subwoofer that is dual 4 ohm hence the 2 ohm load on the amp
Can't a third gen focusrite do loopback without a cable in the setting?
I am not aware of 2ch interfaces having internal loopbacks. The big ones do have it.
@RAW-CAt On supported Scarlett 3rd gens, we've included Loopback.
Focusrite Control’s Loopback feature lets you record other audio sources from within your computer (e.g., the audio output from a web browser).
Loopback uses the Scarlett’s 'virtual' inputs, which have no physical connectors on the hardware interface itself but may be selected in the DAW as signal sources for recording in the same way as any other. By selecting the Loopback output as the recording source on a mono or stereo DAW track, you can record from another software application into your DAW. Note that your computer will assign DAW 1 and DAW 2 as the default sound output channels.
@@jonesaleroy virtual loopback is not the same.
@@RAW-CAt that's why I'm here. Thanks.
Hi, have you ever tried Open Sound Meter? You are faster with OSM, and in real time you see impulse and phase while playing with the DSP. With holimpulsr it is more cumbersome, then if you want with OSM it is easier to align phase and flight times even offline, train with Open Sound Meter get the hang of it and you will see that you will not be able to do without it. Bye.
That is in the plans😉
@@RAW-CAt Grazie per i video che fai sono molto utili❤️
I'm are professional Mastering engineer, and love your videos. But me and girlfriend arguing where you coming from 😅 would you reveal that
I am Lithuanian🙃
I think this is not where I should ask. I think I should ask in Time Alignment
Sorry for the mistake.