aed1421 Posted February 10, 2022 Share Posted February 10, 2022 I just purchased a Marshal DSL 40 that has 2 channels. I have the Helix set up to switch the channels on the amp and that works fine. However, the DSL has 2 footswitch-able modes in each channel and with the 4 or 6 way footswitch I can access all 4 modes. You can switch the effects loop and 2 master volumes on and off with the 6 way. It basically functions as a 4-channel amp. Is there any way to control all 4 modes/channels in Helix? Quote Link to comment Share on other sites More sharing options...
rd2rk Posted February 11, 2022 Share Posted February 11, 2022 1 hour ago, aed1421 said: Is there any way to control all 4 modes/channels in Helix? Yes, via MIDI. Per the MIDI implementation chart on the last page of the DSL40 manual: Channels 1-4 = PC#s: 0-3;4-7;8-11 etc - every 4 PC#s. Pretty weird but gives you flexibility to use whatever #s you need if the amp is at the end of a MIDI chain and for some reason you can't use different MIDI Channels for each device in the chain. I'm just guessing though. Marshall has a tendency to do strange things with MIDI, as witness the way they handle the Loop. The loop is controlled with CC#13. Values of 0=ON, 1=OFF. This can be useful with InstantCommands, but Helix doesn't allow using those values with toggling CCs. The manual says CC#2 with a Value of 127 toggles the loop, but it's not clear whether CC#2 works like a normal toggle (127=ON, 0=OFF), or if it just toggles the loop to it's opposite state every time it receives CC#2 with a Value of 127. You'll have to experiment. Quote Link to comment Share on other sites More sharing options...
aed1421 Posted February 14, 2022 Author Share Posted February 14, 2022 I haven’t read through the DSL40 manual yet but just want to know if anyone has experience this. I have Helix set up via the 4CM with Ext Amp switching. When I plug in to the FS on the back of the amp and connect to the EXT AMP jack on Helix I lose the effects loop (Loop on/off). ROD CLN PED.hlx Quote Link to comment Share on other sites More sharing options...
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