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MultiFX should be arranged using internal FX BUSSES to allow flexible combinations of serial/parallel routing with flexible wet/dry control of each FX back into the signal mix as well as forward into the other FX. Many synths that have on board FX (and even some fairly advanced multiFX hardware boxes) make the mistake of only allowing you to arrange FX in series, with a simple wet/dry mix control in each FX block. This routing flaw severely limits the versatility of the synth or FX device.
For example: Let's say you want a chorus, a delay, and a reverb, in that order (so the chorus goes through a delay and that chorus/delay signal goes through a reverb). BUT - what if you only want a small amount of chorus added to the first (dry) signal, and you want each delay repeat to have a much more pronounced chorus effect? You can't. Once you set the wet/dry signal in the chorus module, that same dry/chorus mix will be sent to the other effects in the chain.
The answer - Don't use wet/dry controls in the FX blocks. Instead, arrange the FX like you would on a real hardware console, with mulitple fx busses, and return level knobs and send knobs for each buss ON THOSE RETURNS, like on a console channel strip. You can control how much dry signal goes to each effect, how much chorus comes back into the mix AND - how much chorus goes forward to the other effects, SEPARATELY from how much comes into the main mix. That's how we do it with a hardware mixing console and hardware effects boxes and there is no reason to simplify the routing in a virtual system and lose all that versatility.
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