impulse cab question

[stratotone]

Ok, trying to figure this out and I don't want to get beat up on the fractal forum. What I'd like to do is get a impulse file of my VHT fatbottom cab and SM57 to use with my axe fx. So if I got the voxengo convolver software, ran the sine sweep tone through my 2/90/2 poweramp into the fatbottom cab and recorded it with my SM57, creating the impulse .wave file, this should in theory once loaded into th axe fx sound like it's going into the 2/90/2 and speaker cab/mic, correct?

I'm considering using the axe live again, but want the 'FOH' do sound to be as close as possible to my stage sound. Fools errand or good idea?

Pete

 

[Audioholic]

In theory it will sound pretty close to the sonic character that you would get with the same mic'd situation. I would suggest finding the best micing position for your cab and giver er a try!

I am using a few IRs in my axe fx, and a few of them sound very open and more in room then most of the other cab sims.

 

[Rogue]

Ok, trying to figure this out and I don't want to get beat up on the fractal forum. What I'd like to do is get a impulse file of my VHT fatbottom cab and SM57 to use with my axe fx. So if I got the voxengo convolver software, ran the sine sweep tone through my 2/90/2 poweramp into the fatbottom cab and recorded it with my SM57, creating the impulse .wave file, this should in theory once loaded into th axe fx sound like it's going into the 2/90/2 and speaker cab/mic, correct?

I'm considering using the axe live again, but want the 'FOH' do sound to be as close as possible to my stage sound. Fools errand or good idea?

Pete

If you do this, I'd like to know your thoughts on the results and best way of doing it.

 

[Clawfinger]

Ok, trying to figure this out and I don't want to get beat up on the fractal forum. What I'd like to do is get a impulse file of my VHT fatbottom cab and SM57 to use with my axe fx. So if I got the voxengo convolver software, ran the sine sweep tone through my 2/90/2 poweramp into the fatbottom cab and recorded it with my SM57, creating the impulse .wave file, this should in theory once loaded into th axe fx sound like it's going into the 2/90/2 and speaker cab/mic, correct?

I'm considering using the axe live again, but want the 'FOH' do sound to be as close as possible to my stage sound. Fools errand or good idea?

Pete

That's correct. You'll get coloration from the 2/90/2, but I'd do it anyway.

Just remember to edit the deconvolved sweep so you can cut out silence in the beginning, or check the "MP" box.

 

[Rogue]

Well? Experience?

 

[stratotone]

Did it last night. Was kinda crazy... here were my steps.

1) downloaded voxengo convolver demo. Allows you to convert three files before you have to restart. I'm going to purchase it, it's useful.

2) Convolver has a 'sweep' .wav file that I loaded into Reaper. Played it through an output on my Mackie Onyx 1640i that went to a VHT 2/90/2 power amp. Had an SM57 and an E609 silver on the cab that was hooked to the 2/90/2. I recorded the sweep file through the mics back into reaper.

3) took the recorded .wav files and converted to 'dc' files with voxengo.

4) took the dc files and converted to syx files with albert's utility available on fractal's message board.

5) loaded the syx 'cab' files into my axe fx with the axe edit software

6) I did four - at roughly a, b, c, and d locations from my other thread. Really preferred 'b' over the others.

Overall they have a kind of 'ratty' quality, not as smooth/polished as other cab IR's like the ones built into the axe fx. I still need to work on getting good levels and such, but I was pretty happy overall. I think with some more work I can get some decent results.

Pete

 

[Ricky Rockhardo]

Did it last night. Was kinda crazy... here were my steps.

1) downloaded voxengo convolver demo. Allows you to convert three files before you have to restart. I'm going to purchase it, it's useful.

2) Convolver has a 'sweep' .wav file that I loaded into Reaper. Played it through an output on my Mackie Onyx 1640i that went to a VHT 2/90/2 power amp. Had an SM57 and an E609 silver on the cab that was hooked to the 2/90/2. I recorded the sweep file through the mics back into reaper.

3) took the recorded .wav files and converted to 'dc' files with voxengo.

4) took the dc files and converted to syx files with albert's utility available on fractal's message board.

5) loaded the syx 'cab' files into my axe fx with the axe edit software

6) I did four - at roughly a, b, c, and d locations from my other thread. Really preferred 'b' over the others.

Overall they have a kind of 'ratty' quality, not as smooth/polished as other cab IR's like the ones built into the axe fx. I still need to work on getting good levels and such, but I was pretty happy overall. I think with some more work I can get some decent results.

Pete

would you be willing to share your .wav impulse files, either now or when you get better results?

 

[stratotone]

Did it last night. Was kinda crazy... here were my steps.

1) downloaded voxengo convolver demo. Allows you to convert three files before you have to restart. I'm going to purchase it, it's useful.

2) Convolver has a 'sweep' .wav file that I loaded into Reaper. Played it through an output on my Mackie Onyx 1640i that went to a VHT 2/90/2 power amp. Had an SM57 and an E609 silver on the cab that was hooked to the 2/90/2. I recorded the sweep file through the mics back into reaper.

3) took the recorded .wav files and converted to 'dc' files with voxengo.

4) took the dc files and converted to syx files with albert's utility available on fractal's message board.

5) loaded the syx 'cab' files into my axe fx with the axe edit software

6) I did four - at roughly a, b, c, and d locations from my other thread. Really preferred 'b' over the others.

Overall they have a kind of 'ratty' quality, not as smooth/polished as other cab IR's like the ones built into the axe fx. I still need to work on getting good levels and such, but I was pretty happy overall. I think with some more work I can get some decent results.

Pete

would you be willing to share your .wav impulse files, either now or when you get better results?

Of course, once I get something that I think sounds good. I have some pretty cool cabs - a '76 Marshall with stock 55hz blackbacks, a first year Mesa V30 oversize armored cab, a VHT fatbottom, a Bogner 4x12, a old Mesa 4x12 halfback, and for cleans a 1960 Fender Concert combo and a '68 Fender bassman 2x15 cab among others.

Pete

 

[Rogue]

Did it last night. Was kinda crazy... here were my steps.

1) downloaded voxengo convolver demo. Allows you to convert three files before you have to restart. I'm going to purchase it, it's useful.

2) Convolver has a 'sweep' .wav file that I loaded into Reaper. Played it through an output on my Mackie Onyx 1640i that went to a VHT 2/90/2 power amp. Had an SM57 and an E609 silver on the cab that was hooked to the 2/90/2. I recorded the sweep file through the mics back into reaper.

3) took the recorded .wav files and converted to 'dc' files with voxengo.

4) took the dc files and converted to syx files with albert's utility available on fractal's message board.

5) loaded the syx 'cab' files into my axe fx with the axe edit software

6) I did four - at roughly a, b, c, and d locations from my other thread. Really preferred 'b' over the others.

Overall they have a kind of 'ratty' quality, not as smooth/polished as other cab IR's like the ones built into the axe fx. I still need to work on getting good levels and such, but I was pretty happy overall. I think with some more work I can get some decent results.

Pete

I'm sure getting some good IRs would take a lot of trial and error.

What volume do you send the sweep tone? I would guess it'd be a pretty healthy volume to get the sound of the speaker when being pushed.

That's something I've actually been curious about. For instance, a G12M sounds different at low volumes than pushed hard. Is the standard a percentage of speaker breakup or something? I never really see this specified.

 

[Ricky Rockhardo]

Of course, once I get something that I think sounds good. I have some pretty cool cabs - a '76 Marshall with stock 55hz blackbacks, a first year Mesa V30 oversize armored cab, a VHT fatbottom, a Bogner 4x12, a old Mesa 4x12 halfback, and for cleans a 1960 Fender Concert combo and a '68 Fender bassman 2x15 cab among others.

Pete

thanks!
You should think about building up an IR library in the near future.

 

[stratotone]

I'm sure getting some good IRs would take a lot of trial and error.

What volume do you send the sweep tone? I would guess it'd be a pretty healthy volume to get the sound of the speaker when being pushed.

That's something I've actually been curious about. For instance, a G12M sounds different at low volumes than pushed hard. Is the standard a percentage of speaker breakup or something? I never really see this specified.

I sent it at a 'loud voice' volume, wasn't at performance volume or anything. That might make a huge difference... dang, something else to try!

Pete

 

[Rogue]

I sent it at a 'loud voice' volume, wasn't at performance volume or anything. That might make a huge difference... dang, something else to try!

Pete

It seems it would be important. I've never seen it mentioned anywhere though. It seems greenback at 1/3rd wattage and greenback at full wattage would be a different IR.

 

[manyaxes]

You won't get all the sonic qualities from the VHT with an IR, you'll only get the coloration or eq the poweramp gives you, but not the breakup, sag, etc. That is up to the axefx to simulate.

 

[stratotone]

You won't get all the sonic qualities from the VHT with an IR, you'll only get the coloration or eq the poweramp gives you, but not the breakup, sag, etc. That is up to the axefx to simulate.

If I cranked the 2/90/2 loud enough to sag or breakup within the poweramp, you could probably hear it from Mars. I think you WOULD hear speaker/cone breakup distortion though... I may try a loud impulse tonight and a lower volume one if I get a chance and post clips tonight.

Pete

 

[manyaxes]

You won't get all the sonic qualities from the VHT with an IR, you'll only get the coloration or eq the poweramp gives you, but not the breakup, sag, etc. That is up to the axefx to simulate.

If I cranked the 2/90/2 loud enough to sag or breakup within the poweramp, you could probably hear it from Mars. I think you WOULD hear speaker/cone breakup distortion though... I may try a loud impulse tonight and a lower volume one if I get a chance and post clips tonight.

Pete

What I mean is that the tube-like properties such as dynamics, sag and breakup (that's why people like to crank tube amps ) won't be captured by an IR. Simply put, an IR is a sort of advanced eq with tons of very narrow bands.

 

[Rogue]

So, is there an update here?

 

[stratotone]

Been busy, might update this when I get time, might not.