Quite easy actually, i have Amplitube 5 Max and with the multi track recorder that’s built in I import the 30 sec sine wave you get from Voxengo Deconvolver into track one & hit the R button for record to that track that’s next to the M button for mute & then choose to have Amplitube to effect that track. Choose what cab and speaker and mics plus there placement . When you play your sinwave back you will hear what ever effects or cabs you have running effect it. Then just go to file export and save it as a wav file.
One I you have your wav file that’s been processed by Amplitube with a cab sim reopen Voxengo and choose the original unaltered sine wave you originally created in it for the test tone file and also the altered one you just created in Amplitube for the file to process. Make sure MP Transform is checked and check any thing else like Volume DB or low & hi cut and set as you like (i uselly bake in a high cut of 10.0khz and low of 60hz with a slope of -24db to get rid off most of the freq. above & below that as there not important for elec. guitar) then hit process in a few seconds you will have your completed IR that will be named dc.wav.
Side note: your completed IR will be like a 1 sec IR in stereo just if you import a stereo IR into helix there going to convert it to mono by just using the Left Channel so you would loose everything on the Right Channel. To avoid that and actually mix the Left & Right channels I convert it to mono with dbPoweramp. But any music/audio converting software can sould be able to mix/convert your Stereo Left Right IR file to mono.
Once your done load it into your modeler of choice and set your levels and fine tune your preferred hi & low cut & enjoy. In the end I think these IR we make can sound fairly close but not 100% like what they sound like in Amplitube but is worth it to experiment with especially if you spent the money on Amplitube and don’t wanna spend money buying IR from some one to be disappointed that they don’t work for you and the sound you want also a good way if you don’t have a lot of cabs of your own to make IR. This way you can take less then minutes to make a new Ir with settings/combo you want. If you don’t like it your not out any money and can make more.
