In this one we're taking a look at how to make an impulse response of your guitar speaker cabinet. Voxengo Deconvolver: goo.gl/kxaKxg HAPPY HALLOWEEN :D
If you use the return input of the amp, the signal goes thru the presence and depth circuit and that shape the tone, that's why yout IR sounds different from the original cab, you need to use a flat power amp to reamp the sweep and achieve a most realistic IR, your video is great and helps a lot, just my 2 cents to make it better yet. Saludos!!!
While this is true, the main problem is the torpedo captor and it’s absolutely terrible impedence curve compared to a real amp. Had he been using the driftwood loadbox or st rock or suhr, this problem wouldn’t have been near and glaring.
@@JustinHeronMusic the torpedos low end impedence curve is nothing more than a low shelf around 200 hz or so. This is absolutely nothing, and I mean nothing like the real curve of a 4x12 cabinet, or any cabinet. Guitar cabinets often have a very peaked Frequency around 90-120 hz. The two notes products do this because it would take much much more expensive filter caps to create the “true” impedence of a speaker cabinet, thus raising their prices, or at the very least cutting into their profit margin. I’m glad this is getting exploited though, because not all load boxes are the same in the least, nor are they all accurate. A homogenous low shelf is not going to give you low end like a speaker cabinet in the least.
I use your method and now i love my Amp sim much more then my tube amp.thank you very much,now i embrace both digital and analog world of guitar amp tonality
You recorded the sweep through the power amp, and also played back your guitar part through the same power amp, so you doubled its characteristic (not linear). Either try recording the IR example after the preamp of your guitar amp (FX loop out, bypassing the power amp) instead, or use a linear solid state power amp for your cab to record the IR sweep.
You can't connect the preamp output directly to the speaker cab. The power amp drives the speaker and delivers enough power to the speaker to drive it and make it loud. And the output transformer is meant to impedance match with the speaker input. Your pre amp won't be able to impedance match and deliver power to the speaker. You'll get a low powered output and an unmatched impedance which could probably cause reflections that might not be good for the preamp. Best to use a solid state power amp that's flat or a tube amp that's as flat as possible.
He's referring to the IR example. Instead of using the power amp, he is suggesting take the signal from the effects send. That way the Cab vs IR comparison is more accurate.
Thanks for this. I just want to record the reverb from my large bedroom and use it in my small bedroom. So I can play guitar in the small bedroom but have the reverb of the large bedroom which I like. Cool. Though using my phone to record the laptop sound, very cheap set up, but it may colour the sound less I hope!
Thank you so much! Using this technique with my NUX MG-300! Still need to adjust placement but sounds great overall. Such an awesome concept and easy to make your own. I used Audacity to record it!
AirRifleSport Thanks for watching :) I did experiment with some longer sweeps but didn't notice any difference. I know Ownhammer have a pack of 500ms IRs that are apparently better, but again to my ear there's no noticeable difference. Experiment and let me know if your results vary :D
Great tutorial man! One question though.. I see that you don't use a reamp box. Do you know the impedance of the FX loop return on your amp? meaning.. are you not using a reamp box on purpose? Or would you recomend I use one to be more precise? I could buy or borrow one, I just wan't to know how how necessary those are. Thanks!
Very cool! So is that the sound from the amp and cab or just the cab? Also will it make a diff if you use 2 mics on the cab? Also how loud the amp should be?' Thanks
Maurício Terra Thank you very much! :D I do believe it is, but that is beyond my ability for the moment. Perhaps I'll dabble and see if I can come up with something worth making a video on :)
The captors with ir sounds fizzy and lacks low end. This is due to not capturing the distortion and harmonics and compression of the speaker. Have been using torpedo stuff for years and IR’s and they all sound different from the original source. That’s what you always need some tweaking on the amp and or eq after to bring out some of the lost touches and frequencies. I also ad a tiny bit of room reverb to get that feel from a miced cabs early reflections.
It’s because two notes impedence curves on Their products is absolute garbage compared to a real amp or a better load box. This is the problem. Not capturing harmonics or speaker compression is not the issue. If it were, all IR’s would be this drastically different from the source, and they aren’t. Get rid of the two notes.
I don't know... Maybe I'm doin something wrong... I've followed each step, got the files I need, but for some reasons after processing the file with Voxengo, the IR results to be completely silent... I can't even see the spectrum of it when I load it in my IR Loader... Have you any idea about what I could've done wrong?
What's a good way of normalizing the volume on the recorded tone sweep? If you're trying to get IRs of multiple mic positions you want to try to make sure the volume is consistent, I assume.
Thanks for this. I've never been able to find any information on what exactly one should use as the "output" of the audio interface. I guessed that maybe it was the headphone or speaker jack but was unsure, so thanks for confirming.
I do run my studio monitors from the L+R outputs but that's what's confusing when it comes to making IRs. I guess I was always worried using the L+R wasn't safe or something. Thanks again!
I plan on using a laptop to send the sweep out to my SS poweramp at the same db as my ENGL preamp hits the input of it. And capture the IR w/ a USB mic into my desktop PC running Reaper. Do you for see a problem going that way? I have a Mooer Radar on it's way now and want to capture my Rack amps tone.
At what volume and EQ settings does the amp need to be set? Very interested in trying this, as I have a custom built cab and it'd be nice to match the sound of my cab for late night silent jams after the family is asleep.
Your EQ and channel volume doesnt matter because these are parameters of the preamp section of your amp. The impulse response is merely the sonic footprint of your power amp, cab, and microphone (youre feeding the test tone signal into the fx return after all and from there it goes directly to the power amp section and out through your cab). If you have a master volume on your amp you set it to the spot at which you think your amp sounds best and then do the IR recording. Same goes for Presence and Resonance controls, those will also be printed to your IR because they are part of the power amp section. The idea of the IR is after all that you feed the preamp signal from your amp (from the fx send or preamp out if your amp has one) to your audio interface and into the computer where it'll go through an IR loader loaded with the IR you just created that will then in turn do the same stuff to the signal that usually your power amp + cab + mic do, which means that you'll still be able to fully control your preamp EQ afterwards. I hope that made sense
What was the point of getting a tone you like if your running it through your FX return anyways. The only EQ that would effect the power amp would be Presence and Resonance??? And for those that dont know the fx loop is after the preamp before the power amp so im not sure why you would dial in anything other than Resonance and Presence. But dont misunderstand me, im still learning so please drop some knowledge if im missing something.
Old post but I'll reply in case anyone else is confused. By "find a sound you like" he means in relation to the mic placement on the speaker and not the EQ on the amp. For example if you put the mic on the edge of the speaker the IR created from the tone is going to come out more bass heavy and might not be desirable. This is good to keep in mind though because in theory you can do multiple IRs of the same speaker cab with different mic placements and simulate multi-mic setups by loading multiple IRs. You can even experiment with different rooms and different mics. For example it might not be a bad idea to do an IR of something like an SM57 or a E609 close up near the center of the speaker and a 2nd IR with a condenser mic a foot or two away to capture room ambiance. You can even mic the back of the cab if you have an open back and capture an IR for that to mix in as well.
Some questions. What's the purpose of the empty space at the end? Does it matter how long or short it is? And why do you "export" the WAV rather than just use the raw recorded WAV to make the impulse response?
1. Dunno lol but for me and others it just doesn't work without it. 2. Doesn't seem to matter, no. 3. I hadn't thought of that! Would probably work just the same.. would have to test.
Dude, tell me one thing, how did you leave the volume control on the interface? I am doing exactly as you directed me but the results are terrible (Extreme treble). It would be nice if you could, make a new video with the details of how the microphone volume is configured in the interface and in the reaper.
Great video. I'd believe you couldn't see the waveform in reaper because the audio file had consistent dynamics over the sweep, so it was just showing a straight horizontal line.
Thanks Jon :) That could be it, though when I first did this the other day before shooting this video I was able to see the wave form. May just have been an anomaly.
This is making me want to make an impulse response for my Vader 4x12 with eminence legends...anybody interested? I'll see if two notes wants my impulse for their software and MAYBE make some money?
If you use the return input of the amp, the signal goes thru the presence and depth circuit and that shape the tone, that's why yout IR sounds different from the original cab, you need to use a flat power amp to reamp the sweep and achieve a most realistic IR, your video is great and helps a lot, just my 2 cents to make it better yet. Saludos!!!
While this is true, the main problem is the torpedo captor and it’s absolutely terrible impedence curve compared to a real amp. Had he been using the driftwood loadbox or st rock or suhr, this problem wouldn’t have been near and glaring.
@@joeblow1229 What terrible impedence problem?
@@JustinHeronMusic the torpedos low end impedence curve is nothing more than a low shelf around 200 hz or so. This is absolutely nothing, and I mean nothing like the real curve of a 4x12 cabinet, or any cabinet. Guitar cabinets often have a very peaked Frequency around 90-120 hz. The two notes products do this because it would take much much more expensive filter caps to create the “true” impedence of a speaker cabinet, thus raising their prices, or at the very least cutting into their profit margin. I’m glad this is getting exploited though, because not all load boxes are the same in the least, nor are they all accurate. A homogenous low shelf is not going to give you low end like a speaker cabinet in the least.
Also the comparisons weren’t loudness matched.
What I liked is the fact you capture your amp sound as well, since it's not a flat solid state like the general recommendation.
I use your method and now i love my Amp sim much more then my tube amp.thank you very much,now i embrace both digital and analog world of guitar amp tonality
Awesome!
You recorded the sweep through the power amp, and also played back your guitar part through the same power amp, so you doubled its characteristic (not linear). Either try recording the IR example after the preamp of your guitar amp (FX loop out, bypassing the power amp) instead, or use a linear solid state power amp for your cab to record the IR sweep.
You can't connect the preamp output directly to the speaker cab. The power amp drives the speaker and delivers enough power to the speaker to drive it and make it loud. And the output transformer is meant to impedance match with the speaker input. Your pre amp won't be able to impedance match and deliver power to the speaker. You'll get a low powered output and an unmatched impedance which could probably cause reflections that might not be good for the preamp. Best to use a solid state power amp that's flat or a tube amp that's as flat as possible.
He's referring to the IR example. Instead of using the power amp, he is suggesting take the signal from the effects send. That way the Cab vs IR comparison is more accurate.
Nothing changed on the real amp and cab recording
this seems so professional for such a small channel
Thanks! It's a dead channel now lol but I appreciate that.
Thanks for this. I just want to record the reverb from my large bedroom and use it in my small bedroom.
So I can play guitar in the small bedroom but have the reverb of the large bedroom which I like. Cool.
Though using my phone to record the laptop sound, very cheap set up, but it may colour the sound less I hope!
Really helpful video! I've got Reaper and a Scarlett so definitely giving it a go!
I think you can get more accurate results if you use a studio power amp instead of your actual guitar amp’s power section. Thank you for the tutorial!
Cool video. very helpful actually Ive made a few IR's but this streamlines the process nicely.
Thanks for checking out the video Eric, I'm glad it could provide some value :)
Resington sent here. Good stuff man
Thank you so much! Using this technique with my NUX MG-300! Still need to adjust placement but sounds great overall. Such an awesome concept and easy to make your own. I used Audacity to record it!
Great, to he point, video.
Is the sweep length important? Could it be 2 seconds? What would happen if it's different duration?
Thanks for sharing.
AirRifleSport Thanks for watching :) I did experiment with some longer sweeps but didn't notice any difference. I know Ownhammer have a pack of 500ms IRs that are apparently better, but again to my ear there's no noticeable difference. Experiment and let me know if your results vary :D
AMAZING!!! I did this and this works VERY WELL
Great tutorial man! One question though.. I see that you don't use a reamp box. Do you know the impedance of the FX loop return on your amp? meaning.. are you not using a reamp box on purpose? Or would you recomend I use one to be more precise? I could buy or borrow one, I just wan't to know how how necessary those are. Thanks!
Matias Marcori Thanks Matias :) The reamp box is not necessary, though probably preferable.
Very cool!
So is that the sound from the amp and cab or just the cab?
Also will it make a diff if you use 2 mics on the cab?
Also how loud the amp should be?'
Thanks
The best video about IRs. Thanks man. I finally understand it :D
Tomasz Dąbrowski Thanks! :D glad I could help
First of all thank you very much for this video.
Is it possible to make an impulse response not only of the cabinet but the whole amp-cabinet gear?
Maurício Terra Thank you very much! :D I do believe it is, but that is beyond my ability for the moment. Perhaps I'll dabble and see if I can come up with something worth making a video on :)
The captors with ir sounds fizzy and lacks low end. This is due to not capturing the distortion and harmonics and compression of the speaker. Have been using torpedo stuff for years and IR’s and they all sound different from the original source. That’s what you always need some tweaking on the amp and or eq after to bring out some of the lost touches and frequencies. I also ad a tiny bit of room reverb to get that feel from a miced cabs early reflections.
It’s because two notes impedence curves on
Their products is absolute garbage compared to a real amp or a better load box. This is the problem. Not capturing harmonics or speaker compression is not the issue. If it were, all IR’s would be this drastically different from the source, and they aren’t. Get rid of the two notes.
I don't know... Maybe I'm doin something wrong... I've followed each step, got the files I need, but for some reasons after processing the file with Voxengo, the IR results to be completely silent... I can't even see the spectrum of it when I load it in my IR Loader... Have you any idea about what I could've done wrong?
why don't you use white noise method?
Where did you take this "test tone file" Sweep-44100......?
What's a good way of normalizing the volume on the recorded tone sweep? If you're trying to get IRs of multiple mic positions you want to try to make sure the volume is consistent, I assume.
You have to subtract the frequency spectrum of the head signal to get the spectrum of the cabinet, that's why it does not sound similar.
Super cool gotta try this
Thanks for this. I've never been able to find any information on what exactly one should use as the "output" of the audio interface. I guessed that maybe it was the headphone or speaker jack but was unsure, so thanks for confirming.
No worries :) You can also use those L+R outputs to run to studio monitors if you've got 'em.
I do run my studio monitors from the L+R outputs but that's what's confusing when it comes to making IRs. I guess I was always worried using the L+R wasn't safe or something. Thanks again!
is it possible to create a snapshot of the whole amp if you connected the cable to the guitar in instead of the effects loop?
I plan on using a laptop to send the sweep out to my SS poweramp at the same db as my ENGL preamp hits the input of it. And capture the IR w/ a USB mic into my desktop PC running Reaper. Do you for see a problem going that way? I have a Mooer Radar on it's way now and want to capture my Rack amps tone.
At what volume and EQ settings does the amp need to be set? Very interested in trying this, as I have a custom built cab and it'd be nice to match the sound of my cab for late night silent jams after the family is asleep.
Your EQ and channel volume doesnt matter because these are parameters of the preamp section of your amp. The impulse response is merely the sonic footprint of your power amp, cab, and microphone (youre feeding the test tone signal into the fx return after all and from there it goes directly to the power amp section and out through your cab). If you have a master volume on your amp you set it to the spot at which you think your amp sounds best and then do the IR recording. Same goes for Presence and Resonance controls, those will also be printed to your IR because they are part of the power amp section. The idea of the IR is after all that you feed the preamp signal from your amp (from the fx send or preamp out if your amp has one) to your audio interface and into the computer where it'll go through an IR loader loaded with the IR you just created that will then in turn do the same stuff to the signal that usually your power amp + cab + mic do, which means that you'll still be able to fully control your preamp EQ afterwards. I hope that made sense
pure awesome
Haha cheers Bruno
Great video. Could you share the impulse?
Cool video, thanks!
Thanks for watching! 😃
What was the point of getting a tone you like if your running it through your FX return anyways. The only EQ that would effect the power amp would be Presence and Resonance??? And for those that dont know the fx loop is after the preamp before the power amp so im not sure why you would dial in anything other than Resonance and Presence. But dont misunderstand me, im still learning so please drop some knowledge if im missing something.
Old post but I'll reply in case anyone else is confused. By "find a sound you like" he means in relation to the mic placement on the speaker and not the EQ on the amp. For example if you put the mic on the edge of the speaker the IR created from the tone is going to come out more bass heavy and might not be desirable. This is good to keep in mind though because in theory you can do multiple IRs of the same speaker cab with different mic placements and simulate multi-mic setups by loading multiple IRs. You can even experiment with different rooms and different mics. For example it might not be a bad idea to do an IR of something like an SM57 or a E609 close up near the center of the speaker and a 2nd IR with a condenser mic a foot or two away to capture room ambiance. You can even mic the back of the cab if you have an open back and capture an IR for that to mix in as well.
Some questions. What's the purpose of the empty space at the end? Does it matter how long or short it is? And why do you "export" the WAV rather than just use the raw recorded WAV to make the impulse response?
1. Dunno lol but for me and others it just doesn't work without it.
2. Doesn't seem to matter, no.
3. I hadn't thought of that! Would probably work just the same.. would have to test.
how can i combine 2 ir files to 1 ir file?
Thank you man!
Is it possible to do something similar with guitars, to make one guitar sound like another ? ie make a Tele sound like a Gibson ?
Yeah man check out the Mooer Tone Capture
@4:22 my dog looked so fucking confused at that sound.
EssexMetalHead lmao yeah mine didn't know what to make of it either
Very helpful!!! Thank you!
Yan Taran No probs! Thanks stopping by :D
How do I could capture the “thing” “eq” or “tone” if I use the Adobe Audition 3.0?
How did you record the amp in line straight to the audio iterface, without going through the cabinet and microphone?
I used a load box called the Torpedo Captor. Did a couple of videos on it, check it out :)
Thank you..
Thx
What happens if my amp don't have fx loop? I can send the signal directly to the input of my amp? Thanks.
No, use a flat power amp better than return of a guitar amp, it have to be a flat response amp.
only peak is different?
Thanks for this, but the fizz level is has jumped the shark
Dude, tell me one thing, how did you leave the volume control on the interface?
I am doing exactly as you directed me but the results are terrible (Extreme treble).
It would be nice if you could, make a new video with the details of how the microphone volume is configured in the interface and in the reaper.
Bruh thanks so much
Great video. I'd believe you couldn't see the waveform in reaper because the audio file had consistent dynamics over the sweep, so it was just showing a straight horizontal line.
Thanks Jon :) That could be it, though when I first did this the other day before shooting this video I was able to see the wave form. May just have been an anomaly.
Great video. amazing info. But I subbed for the dope vape cloud!
Haha cheers!
Nice but the mic sounds better than the ir
Matt Taylor IRs will never be as good but they come damn close and for silent jamming/recording you can't go wrong :)
true, but in a mix with many guitar overdubs, reverb, compression, eq and other effects, you can easily make up for the difference I think!
This is making me want to make an impulse response for my Vader 4x12 with eminence legends...anybody interested? I'll see if two notes wants my impulse for their software and MAYBE make some money?
have you tried?
Windows?? WTF?