Ok guys, made my first IR...skipped out on work today to do it :ph34r: I'm giving it away for free (attached), please let me know if you like it, hate it, or have suggestions. I know there's a lot more learning I need to do. It's pretty raw. I could spend more time tweaking it. I've only tested it through headphones straight out of the Helix on a blank preset with only two blocks; a Helix "Amp" model (not "Preamp" or "Amp+Cab") and this IR. No EQ, effects, or any other blocks. I did this for myself because I really wasn't liking the Helix OOTB Amps and Cabs through headphones (Sennheiser HD280 Pro), studio monitors (M-Audio BX-8), my PA speakers (JBL Eon 515XT), or even the effects return of my Mesa M9 bass amp into a Powerhouse 2x12 w/ horn (which actually sounded best). I loved Helix preamps through my Mesa Mark V, Stilleto Deuce II, Simul 2:90, or 20/20 power sections into my Recto 2x12. I loved Helix Amps into Amplitube 4 cabs only with the amps turned off. I crafted this IR to get a lot closer to those tones and get myself closer to using only the Helix. I'm sure Redwirez and Ownhammer IR's are much better, but I havent tried them yet. Hopefully this might show the IR possibilities to those that may not totally satisfied with the stock Helix sounds, or may just want different options.
Update 3/31/2016
To get a lot closer the real Recto cab sound, try these settings on the Helix IR block with this IR to match Celestion V30 specs frequency range:
Low Cut @ 70Hz
High Cut @ 5000Hz
Celestion V30 Specs
http://celestion.com/product/1/vintage_30/
I have also exported my Helix test and tweak presets (1024 & 2048 samples) with the Cali Rectifire Amp and Mesa Recto SM57 IR. I had to change the file extension to *.txt to upload it to this site. You will need to change the exported preset "Mesa Rect IR####.txt " back to "Mesa Rect IR####.hlx" before importing to the Helix app.
The presets have the impulses in slot 1.
Made a Dropbox account and posted and shared the 3 IR's and corresponding Helix test presets.
https://www.dropbox....Rd2evJJ0Ca?dl=0
Will start posting to the Line 6 IR Forum
http://line6.com/sup...mpulse response
Mesa Recto SM57.wav
Mesa Rect IR1024.txt
Mesa Rect IR2048.txt
Mesa Recto SM57_2.wav
Mesa Recto SM57_3.wav