So I've browsed this forum for posts on how to make your own IR, mostly interested in knowing: which channel on the amp I must use? Clean channel? Should I put the EQ all at noon? etc etc Only thing I was able to find was "It's easy, use Voxengo Deconvolver" etc. etc. I went the BlendIR route, from Two Notes. Quite straight forward software, however, my IRs sound like shit. We have a Dual Rectifier + Mesa OS + SM57 setup, so we first started by reamping one track, so that we could compare with the IR when we'd have it. Track was recorded using our typical rythm tone (overdrive, channel 3, etc.) Then, not touching anything, we used BlendIR to generate our own IR. We used the clean channel of the Dual Rec, with the EQ at noon. We put the Pres and Master at roughly the same location as the previous Reamped track. We got the Output of the amp loud enough to get the BlendIR to maximum -5dB (anybody who used it probably knows what I'm talking about). Now with our own IR, we Reamped again the same track, but instead of using the mic'd cab, we silent recorded, using the Line Out of a Rivera Rock Crusher and our new impulse. Comparing both tracks (with and without IR), it was very different. Not only that, but using our own IR with an amp simulator, such as Thermionik... well it sounded like utter shit. Which makes me think, we probably made a noob mistake? What did we do wrong? Everybody says it is easy to do an IR, so either I'm dumb, either I missed a basic concept, or it's actually not that easy. Any help would be appreciated.