Jecswp Posted May 10, 2016 Share Posted May 10, 2016 I made a discovery this weekend whis was important for me, but which was probably painfully obvious to everyone else. Apologies, for the rambling that's about to follow. When I get excited my ability to communicate is . . . compromised I know that the Helix/DT combo is a completely different animal than the HD/DT one. But I've been trying to make my Helix and DT50 interact as similarly as I can. The first step, of course is to use DTEdit to blank the preamp modeling for all four voicings on Channels A & B. Then blank the mic/cab modelling for the direct output. What that leaves you with is basically a DT power amp section. Some have success picking a Voicing, Operating Class, and Tube Configuration and just leaving it. Then running all of their presets through that. I'm sure that sounds amazing, but i knew there had to be more. Pretty much every parameter of the DT can be controlled via midi. The aforementioned three, Channel Selection, EQ, Reverb, And the "hidden" parameters unique to the DT50; 12AX7 Boost, Phase Inverter Voltage, Topology, and Feedback Capacitor Type. So my goal became to use midi to make the Helix/DT sound and behave as much like the real thing as possible. In an earlier thread, I discovered how to use the midi instant commands. So I tried to figure out how to set it up so that when I selected a preset, the commands would fire to set up the DT50 to mimic the power section of whatever preamp I was using. So which parameters to assign to the Instant Commands? Well the EQ and channel volume controls are disabled when you clear out the preamp models, so I can forget those. I have reverb in my patch if I need it, so cross that off. Which leaves me with seven: 1) Channel/Voicing 2)Operating class 3) Pentode/Triode, 4) 12AX7 boost, 5) Phase Inverter B+ voltage, 6) Phase Inverter type, 7) Topology It's a bit of a hassle to program all those midi commands at the start, but worth it I hope. There's just one problem. There are only six instant command slots available. So which parameter can I leave out? So I used DarrellM5's spreadsheet, which contains all of the default power amp settings from the HD500 So I hooked my DT up to HDEdit and starting with those, Then I began to set the rest to see which were most important to getting my the sound I was looking for and which I could leave out. Which leads me to the discovery that is the inspiration for this post. ALL of those settings can be saved can be saved to a voicing slot in DT Edit - Channel A: I, II, III, IV or Channel B: I, II, III, IV For example, I have a Plexi patch which calls up Channel A, Voicing II. When I load it up I can, using only one Instant Command, change the DT settings to Class AB, Pentode, 12AX7 Boost on, Topology II, Phase Inverter B+ voltage to High, and Feedback Capacitor to X. All to match the way Line 6 sets them up (which I assume are the settings they settled on after examining all the gear they modeled) Or I can change it to anything I want. All with only one midi instant command. A couple down sides. One, you're limited to the 8 Voicing slots available. Two, at least with the Plexi, which is the only one I've really worked with so far, the DT Master works in the same way, the volume control would on the real amp. You have to get pretty loud to get any sort of distortion happening. But when you do, it's glorious! Then back off the volume on your guitar, ease up on your attack and you can get those beautiful "clean, but on the verge of breaking up" tones. I love it with my MIM strat with CS '69s. Quote Link to comment Share on other sites More sharing options...
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